# Wednesday, June 08, 2011
Buildings, including residential, commercial, public, and industrial consume about one third of all energy use and about two thirds of all the electricity generated. Demand for electricity in the U.S. is increasing three times faster than new power plants and lines are being built to accommodate this rapidly increasing demand. Heating and cooling costs dominate most building's energy usage. A building's roof can have the greatest impact on the energy consumption by a building so any technological advances and improvements in roofing energy efficiency and performance will greatly affect both energy usage and consequent cost savings. Energy efficiency, durability, performance, sustainability, recyclability and life cycle costs are the focus of green building. Architects, builders and consumers have been changing the way they select building materials and designing buildings. They are increasingly shifting their focus to green building materials and energy performance with so called cool roofs becoming a key focus. Cooling costs significantly affect a building's energy consumption in most parts of the country and cooling is the predominant cost in the southern states. Cool roofs can save up to 40% in cooling energy as reported by several studies including Lawrence Berkeley Laboratory Heat Island Group. Cool roofs essentially are roofs which reflect much of the sun's radiation away from a building, employ above sheathing ventilation (ASV) cooling under the roof, readily emit any heat which they do absorb back away from the building and cool quickly at night. The less solar radiation and heat entering a building's interior space through the building's roof, the lower the building's cooling costs and energy use will be.

 cool roof heat gain - heat flux diagram
Net Heat Flux Through Roof (courtesy coolmetalroofing.org)

Cool roofs or reflective roofs can be comprised of a variety of materials including asphalt or fiberglass shingles, clay or concrete tile, EDPM rubber or PVC roofing membrane and variety of metals as long as they can reflect away much of the sun's radiation and readily release any heat they absorb into the atmosphere. White and the more lightly colored roofing materials are the most reflective but different material composition as well as special designed and engineered coatings or paints used on them can also greatly affect reflectivity and emissivity. Some of these new coatings or paints, especially those applied to newer more advanced metal roofing, incorporate special pigments designed to provide higher reflectance of solar infrared and ultraviolet radiation. Infrared and ultraviolet radiation can contribute even more to absorbed heat energy from the sun than visible light so any type of roofing material incorporating these special reflective coatings may outperform conventional light colored materials without them. Even darker colored roofing which incorporates these special IR and UV reflective coatings will outperform older non treated darker colored roofing saving as much as 25% in cooling costs.

cool metal tile roofing shown having solar reflective coating cool roof and green roof energy saving properties cool metal tile roofing shown having cool roof and green roof properties
Reflective Cool Metal Roofing Tile (courtesy coolmetalroofing.org)

Even with the advent of newer reflective coatings, white and light colored roofing still is the best performing cool roof providing the most energy and cost savings. C
onsumers, builders and architects however still like the aesthetics in having varied colors and materials and many still favor darker roofing hues. Ultra violet (UV) represents about 3% of the total solar energy striking the earth’s surface. Visible solar energy amounts to 40% while infrared (IR) energy accounts for the largest percentage 57% of the solar energy spectrum and is felt as heat. Thus roof materials which can be coated with newer UV and IR reflective coatings, even the darker shades of roof color, can now be much more energy efficient than in the past. Darker shades of roofing still won't reflect near as much of the visible solar radiation as lightly colored and white roofing. Though with engineered reflective coatings they will now block a high percentage of the UV and IR radiation which actually constitute more of the solar energy radiation and heat gain than visible solar energy. In addition to solar reflectivity, heat emissivity of roofing materials must also be considered as a large factor affecting building energy usage and possible contribution towards heat island effects. Any solar radiation which is not reflected by the roofing surface is then absorbed, converted or transferred to heat energy and some of this heat can conduct and radiate down into the interior building space affecting cooling costs. If the roof material has good emissivity much of this heat can re-radiate back to the sky in the form of IR energy especially cooling off during the night and there will consequently be less heat build up. Any concentrated heat build up, especially in tight grouped urban areas leads to heat island effects where temperatures in the air above these heat islands can be up to 12 degrees hotter than normal, leading to higher air conditioning costs, higher use of energy and higher levels of ozone and smog.

   thermal image of Atlanta at night time showing warming heat island effects
Atlanta at Night Thermal  (Blue=cool, green=lukewarm, red=warm, white=hot)

In addition to emphasizing high solar reflectance and emissivity properties, roofs can additionally be kept cooler, limiting or preventing heat gain or heat flux down into a building' interior space below, by promoting convection cooling underneath the roof material using above sheathing ventilation (ASV). Heat emanating from the underside of the roofing can be removed using convective air flow (balanced ventilation) moving from soffit vents or eaves up to and out a ventilating roof ridge cap. Testing at Oak Ridge National Laboratory showed that by employing the natural convection of heated air below the roof covering, temperatures in an attic space are reduced. Air enters at the eave, is heated by the roof, and because hot air rises, it is naturally drawn up and vents to the outside. This natural convection controls heat gain and reduces the temperature in the
attic below.
The Oak Ridge National Laboratory study found that dark-colored metal-shingle roofs using above-sheathing ventilation had similar heat energy flows compared to their lighter cooler colored counterparts. About 30 percent of measured reduction in heat gain was contributed by ASV. When a cool reflective roof surface was used with ASV, an additional 15 percent reduction in heat gain was achieved for 45% total. The improved summer performance of cooler roofs coupled with the reduced heat losses during the winter show cool roofs can both reduce energy usage in summer months while negating any supposed heating penalty in cooler months or northern heating dominated climates.
* (see http://www.metalconstruction.org/pubs/pdf/ORNL-TM-2006-9.pdf)

A convective air space below the roofing material can be easily set up by using a batten, cross batten or metal purlin framework on top of roof sheathing or a roof deck, on which sturdy roofing panels can be attached. Less sturdy roofing material can employ a 1 1/2" metal roof deck or else just a purlin spaced layer of OSB below the existing roof sheathing. Even darker roof materials such as weathered bare copper which does not have a great solar reflectance index (SRI), can provide good to outstanding energy efficiency results with the use of either an underneath or above sheathing ventilation approach. Additionally winter or cold weather heating performance is improved with the use of below or above sheathing ventilation as that convection air space between the roof material and lower roof deck or sheathing further acts as an insulative layer and helps to prevent heat loss and condensation. Ventilated cooled roofs work great and are energy efficient in any climate. They tend to last much longer too with less heat degradation. 

roof deck batten - cross batten construction framework shown on top of which cool roofing will be installed
Batten - Cross Batten Above Sheathing Ventilation (ASV)

roof structure cut out showing an energy saving cooling ventilated convection space positioned below the roof sheathing of a copper standing seam roof installation
ORNL Copper Roof Ventilation Test (images courtesy CDA at copper.org)
roof heat gain chart comparing different kinds of roofing including asphalt and cool metal roofing to a ventilated copper roof

* These test results reflect using a 1½” fluted metal roof deck, ¾” OSB (plywood would work just as well), underlayment and red rosin paper underneath a standing seam copper roof. The use of a fluted metal roof deck is optional; similar results can be obtained by using other designs that provide an air space below the deck. The test roof had a 4/12 slope and faces south. The ventilated copper roof system was compared with a control roof of typical black asphalt, a typical non-ventilated copper roof assembly and two very good examples of above-the-sheathing, ventilated stone-coated steel roofs using special Cool Roof reflective coating colors. The graph above shows the ceiling heat flux crossing the attic floors of the respective attic assemblies. The light gray stone-coated cool metal roof (SR246E90) dropped the ceiling heat flux by roughly 29% of that measured for the asphalt shingle roof (SR093E89). The copper roof with the fluted metal deck further dropped peak ceiling heat flux an additional 23% of that for the coated steel shingle roof, bringing the total reduction for the copper roofing system to 50% of the asphalt control. Peak heat flux dropped an additional 1.5 Btu per hour per square foot for the copper roof as compared with the stone-coated metal roof. These results show clearly that a vented copper roof assembly will greatly reduce heat gain resulting in lower energy costs for the structure. Further, it dispels the notion that copper roofing must have high reflectance and emissivity in order to be effective in saving energy. * See Copper Roofs Are Cool

Cool roofs with their large energy saving and cost saving benefits can be realized by employing light colored roofing materials with very good solar reflective properties or roof materials using special engineered reflective coatings or most any type of roofing utilizing balanced and well functioning
below or above sheathing ventilation (ASV). White or lightly colored highly solar reflective roofs employing ASV still provide the greatest energy and cost savings. It must also be stated that using higher R-values for ceiling insulation or better insulation below the roof in structures without attics will also control or limit heat gain into a building interior and consequently also lessens the heat gain differential using less reflective roofing materials or darker roof colors. Adding a radiant barrier and insulation board underneath your lower roof deck and convection space can further prevent the intrusion of heat gain from roofing into attic and living space. Additional attic vents, gable vents, dormer vents and roof vents will also reduce heat gain from roofing. More sloped roofs also perform much better and have less heat gain than flat or low sloped roofs and should be considered for any new construction. Some buildings with flat or low slope (<2:12) low-rise roofs may also be candidates for retrofitting them with a lightweight sloped roofing structure framework when re-roofing them especially with lighter weight roofing such as metal roofing. That framework could simultaneously also provide a convective roof cooling space underneath the new roofing. Resulting lower energy costs, less maintenance and no roof replacement for 50 years or longer could provide a good return on that investment. The bottom line is that when evaluating roofing energy efficiency, heating and cooling costs, looking only or primarily at roofing material properties such as SRI, reflectivity and emissivity is not sufficient to see the whole picture. You have to look at what effect the entire roofing system and structure has on heat gain, cooling load, heat loss and energy usage of the building and it's systems. The performance of the whole system must be examined in totality when the end goals are reducing energy costs and going still further, in achieving the most eco-friendly green buildings. In a subsequent blog article, the green building aspects of roofing will be discussed in more detail. Then again there are specialized roof systems such as KME's Tecu Solar System copper roofs below which are expressly designed as efficient solar heat collectors for heating a building's interior space, it's hot water and even swimming pool. Where do such technically advanced roofs fit into energy efficient roofing guidelines, requirements, ratings and green design certification?

 copper roof integrated solar heating collection system shown in patinated green copper finish
Copper Solar System Roofs (photos courtesy KME.com - Italy)
copper roofing solar heating collector system for heating building and hot water system - shown in new raw copper finish
6/8/2011 8:55 AM Eastern Daylight Time  #    Disclaimer  |   |  Trackback
# Friday, July 23, 2010
Copper and natural stone make ideal green building materials for both the exterior and interior of all buildings, including commercial, public and residential buildings. What is green building? Simply put green building means the construction, renovation or remodeling of houses, public and commercial buildings so they are more durable, environmentally responsible, energy efficient and healthier for their occupants throughout the building's lifespan or life cycle. This is basically accomplished by designing and constructing buildings that last a long time, are more efficient, use less energy and water and are healthier spaces to occupy and live in. Historically, well designed and constructed buildings have delivered short term goals of utility, economy, durability and comfort. Green building really just takes the next step in building even better homes, commercial and public buildings by improving on their long term durability, quality, efficiency, high performance, human health, environmental impact, life cycle cost and sustainability. A building's total life cycle cost includes it's design, siting, construction, operation, maintenance, repairs, replacements, renovation, deconstruction, salvage, disposal and recycling. Green building materials typically include: renewable plant materials such as quick growing straw, bamboo and wood from sustainably managed forests; materials which are non-toxic, reusable and recyclable such as dimension natural stone, recycled stone and recyclable metals. Eliminating construction materials and interior finishes which have emissions of toxic gases such as formaldehyde and VOC's improve a building's indoor air quality and is healthier for occupants. Moisture control and eliminating biological or organic sources of mold, bacteria, fungi and pathogens will also promote healthier air and living space. Implementing green building techniques reduces negative impact on human health and the environment during multiple phases including the production of building materials, building construction, occupation, building operation and maintenance of a green design building. While many green buildings cost a premium which averages just less than two percent initially, green building will typically yield a financial return or savings of over ten times that initial premium during the life of the building. Green building simply saves money, protects the environment and provides healthier living spaces. The strong case for green building is abundantly clear considering the positive impact on human health, our environment and our finances.

copper mining quarry in Chile pictured here natural stone quarry shows dimensional stone from mined natural stone deposits in Beijing, China pictured here
Copper Mining Quarry and Natural Stone Quarry

Natural resources such as copper and natural stone are mined or quarried and minimally processed natural materials as opposed to artificially manufactured materials, faux or simulated materials. Pure copper and natural stone share many green building material qualities: they are mined or quarried directly from the earth and minimally processed using environmentally conscious techniques; all waste material can be used or recycled; they require no external finishes or chemical treatments; they generate no harmful emissions or byproducts; they do not promote growth of mold, germs or other harmful pathogens; they are healthy, hygienic and non-toxic; they promote
more even indoor temperature and healthier indoor air quality; they are moisture and corrosion resistant; they weather extremely well naturally; they are not flammable materials; they are not damaged by water; they do not break down, decompose, decay or deteriorate like previously living organic materials and most man made materials; they age beautifully and gracefully as natural patina formation, discoloration, pitting, dents or cracks enhance character and natural appearance; they require little upkeep or maintenance; they are extremely durable, outlasting the owner's lifetime and the building's lifespan; they are salvageable, reusable, absolutely recyclable and retain their value extremely well. Copper and natural stone are two of the oldest, most durable building materials used by mankind and countless buildings and structures incorporating natural stone and copper architecture stood for centuries. Copper and natural stone were used because they were abundant resources found directly in the natural environment, required minimal processing and were fairly easy to work with. Today spending even a little more for natural, earth friendly, durable materials has proven cheaper in the long run because they won’t have to be replaced as often, maintained as much and can be recycled. Considering on building materials life-cycle cost, rather than focusing solely on initial cost can yield some eye opening results.
 

green building Sala at Penn State with Gold LEED certification pictured here City Center building with Gold Leed certification in Las Vegas pictured here
LEED Gold Penn State SALA and City Center LEED Gold in Las Vegas

We spotlighted the Penn State Sala building above in a previous blog for it's heavy use of copper (over 80,000 pounds) helping it achieve it's U.S. Green Building Council Gold LEED certification and remarkably at no additional cost over conventional building. The recent City center in Las Vegas also received LEED Gold certification by the U.S. Green Building Council for six of it's buildings, including Aria, Vdara, Crystals, Mandarin Oriental, Las Vegas and Veer Towers. That made City Center one of the largest sustainable green building developments in the entire world. The immense project entailed collaborative involvement by eight renowned architecture firms. Green building material selection, included extensive use of natural stone for interior spaces and exteriors of the buildings. While other green materials were considered, natural stone provided the architecture with a natural textured, tactile feel and the richness, warmth, comfort, earthy look and colors they sought. The Aria building encompasses 70,000 square feet of natural quartzite stone cladding in a varying thickness mosaic pattern on it's exterior walls. Inside the buildings, different uses of natural stone were employed including a mosaic stone, stacked stone, flat honed or polished stone, to provide contrasting looks and changes in texture. Everyone involved with the project was happy with the results and the buildings continue to garner positive feedback and compliments. See additional pictures of City Center and information on it's green building features in the Stone World article  Stone Contributes to LEED Certification for New Las Vegas Landmark

architectural copper work and natural stone masonry on home pictured here natural stone wall cladding and copper gutters on house pictured here
Architectural Copper Work and Natural Stone Wall Masonry

View additional natural stone pictures of genuine natural stone installations at the Rutland Minstone website, encompassing natural stone tile flooring, natural stone walls, natural stone patios, garden stone paving, landscaping, slate roofs and stone columns. Slate, travertine, quartzite, limestone, sandstone and flagstone tiles, wall veneer panels and pavers are some of the featured natural stone applications. With large advances in mining, processing and shipping technology, use of natural stone has grown from use primarily only in major buildings and large expensive estates to becoming a staple in homes and buildings of every size and budget today. There has been a drastic reduction of genuine stone prices over the last decade or so. Around the world there is now an enormous inventory of natural stone and even more is being discovered every day. A combination of many technological advances and this very plentiful supply have combined to make natural stone very affordable and price competitive with man made materials, while having better green building characteristics and life cycle cost benefits. People have embraced the beauty and elegance of this unique, all natural material for their floors, wall coverings, kitchens, baths, outdoor landscaping and paving. Consumers prefer natural stone because it is the real thing which can not be duplicated in a laboratory or factory but is nature's very own genuine product. Natural stone is created by nature in many thousands of color variations with no two natural stone pieces exactly the same. Nothing approaches the uniqueness, durability, wide applicability of genuine natural stone and pure copper. From the beginning of time to far into the future, copper and natural stone have always been excellent green building materials while having natural beauty, grace, warm richness and timeless elegance.  
   
7/23/2010 9:06 AM Eastern Daylight Time  #    Disclaimer  |   |  Trackback
# Wednesday, December 16, 2009

LEED or Leadership in Energy and Environment Design is a third party certification and building rating program for building performance across several key areas. LEED attempts to measure a building's performance and sustainability across such areas as: optimizing energy efficiency as well as use of renewable energy; efficient and sustainable use of building materials and resources, including reuse, renewability, recycling and durability; innovation of design, incorporation of high recycled and regional content; water conservation; ensuring infrastructure and limiting neighborhood and environmental site impact; indoor air and environmental quality, including occupant comfort; reduction in CO2 emissions; efficient operation with low or reduced maintenance and energy costs. Developed by the U.S. Green Building Council (USGBC), LEED is a voluntary certification which strives to verify and promote sustainable high performance buildings or communities with less environmental impact, improved livability and long term savings. While LEED is still evolving, incomplete and not nearly perfect, building rating systems, certification and verification are raising our awareness and expectations for building performance and helping shift the construction market and demand toward healthy sustainable building, our long-term well-being and environmental responsibility.

copper cladding exterior walls are recycled from regional sources in Penn State's SALA green building shown here
Penn State SALA Building - Recycled Copper Cladding

Copper used in green building materials and strategic building components contributes to high environmental and building performance in many areas, most of which qualify for credits towards LEED certification of a building. For example Pennsylvania State University's School of Architecture and Landscape Architecture (SALA) used over 80,000 lbs (35,000 kgs) of copper in its construction and it was the first building to achieve a gold LEED certification at no additional cost. Most noticeable is the pre-patinated, 95% recycled copper cladding used for the exterior walls as shown above. This green building project used copper extensively for copper's green properties: high recycled content; local or regional availability; durability; high rate of recyclability at end of building's useful life; low or non-existent maintenance costs for copper; workability of copper. To maximize these benefits, in addition to wall cladding, copper was used for all soffits, sun shading and even on ceilings of large atriums. Looking at long term cost factors also ensured copper's prominent role in this green building project. Copper's legendary durability is measured in generations rather than years or decades with little to no maintenance required throughout it's lifetime. Virtually 100% of the copper can be recycled upon eventual demolition or replacement of the building and recycled copper maintains 95% of the value for new mined copper. Copper also has the best heat and electrical conductive properties of any viable metal as well as superior resistance to corrosion. Copper's many attributes are reflected in copper's contribution to green building high performance with 13 possible LEED credits across 3 performance areas. Copper's aesthetic qualities also ensure green building architects achieve attractive, visually appealing green LEED designs without sacrificing any efficiency, performance or environmental objectives.

Bethel Woods Performing Arts Center shown here with extensive use of copper throughout and in sweeping copper roof design
Bethel Woods Performing Arts Center - Extensive Copper

Copper, Green Building and Green Certification Links:

Building Green: How Copper Can LEED the Way
http://www.copper.org/environment/green/casestudies/building_green.html

Canadian Copper Association – Green Building
http://www.coppercanada.ca/greenbuilding.htm

North American Copper in Architecture Awards
http://www.ccbda.org/NACIA2009/main/naciamain.html

North American Initiative on Copper Architectural Applications
http://www.ccbda.org/architectural.htm

European Copper in Architecture Awards
http://www.copperconcept.org/

Copper Building Products – International Site
http://www.copperinfo.com/cproducts/building.html

U.S. Green Building Council – LEED Certification
http://www.usgbc.org/

Green Building Rating Systems - Worldwide
http://www.worldgbc.org/green-building-councils/green-building-rating-tools

BREEAM: Environmental Assessment Method for Buildings Around The World
http://www.breeam.org/

Reference Source for Environmental Products and Services
http://www.greenbooklive.com/

Green Guide to Specification - Best Environmental Performance with Life Cycle Analysis
http://www.bre.co.uk/greenguide/podpage.jsp?id=2126

Features of ENERGY STAR Qualified New Homes
http://www.energystar.gov/index.cfm?c=new_homes.nh_features

EPA Indoor Air Quality - Indoor airPLUS Program
http://epa.gov/indoorairplus/construction_specifications.html
12/16/2009 10:21 AM Eastern Standard Time  #    Disclaimer  |   |  Trackback
# Friday, December 11, 2009
Green, green home, green building, going green, sustainability and LEED are all catch phrases that seem to be catching steam and quickly building momentum these days. What does go green and green building specifically mean? Green building is the philosophy, design and implementation of the most efficient use of resources, that are both environmentally responsible and positively affect our health throughout the building's entire life cycle. The building's life cycle starts with siting, includes design, construction, operation, maintenance, renovation and then finally demolition. The total long term environmental cost of all building components is calculated and factors into green building design. Green building extends traditional building's short term concerns of economy, utility, durability and comfort with long term goals of sustainability, high performance, human health and environmental impact. The environment is impacted by the production and consumption of materials, natural resources, energy, water and land. Our environment is adversely altered by the building's inhabitants generation of waste products, water pollution, air pollution, heat and noise. Ultimate effects may include harm to human health, degradation of the environment including the atmosphere and loss of natural resources. Green building's goal is to reduce or eliminate any adverse health and environmental impact for every kind of building including residential, public, governmental, religious and commercial.


Copper Mining
  
The whole field of green building is literally exploding and there is so much information already available out there on many of the aspects involved with green building. Today's blog is just an overview that defines what green building is and there will be a subsequent series of articles that will cover in more depth the many aspects involved. We will also closely examine and feature the role of copper in green building and green homes. Copper homes, copper building and copper architecture play an important part in virtually all green building designs, including some or all of the following: plumbing, wiring, solar panels, windmills, tankless water heaters, external wall siding, roofing, guttering, roof structures, flashing, chimneys, fascia, vents, duct work, healthier copper kitchen designs, even outside door and window cladding. Copper usage in fact can contribute upwards of 13 points in various areas towards LEED green building certification.

St. Croix Chapel (picture courtesy Copper.org)
12/11/2009 12:33 PM Eastern Standard Time  #    Disclaimer  |   |  Trackback
# Monday, August 31, 2009
There are many older buildings with very distinctive architectural features which after a length of time those features may deteriorate, crack, crumble or corrode. For architectural, historical and preservation reasons these worn out building features, when repairs are not feasible, are frequently restored with replacements maintaining an acceptable likeness in form, texture and color and possessing a long lifespan. Being ecologically green, sustainable, low maintenance, with excellent weather-ability and having low total environmental cost are all very positive objectives to observe in architectural restoration or historic preservation. Copper has historically been commonly used for architectural building features for it's elegance, durability, weather-ability, long life and pleasing earth tone patina. Copper's character allows it to suitably replace not only original copper work but also original cast iron, lead, other metals and virtually all types of masonry including stone, terra cotta, etc. Copper will naturally develop a protective patina cycling through shades from raw copper's salmon color to various browns to bluish greens then finally to a grayish light green over the course of the many decades or centuries of it's long life. Copper can be painted any color, or coated to maintain it's original color or even pre-patinated to a dark brown or it's final light green color. It is best environmentally to avoid any paints, coatings and chemicals and just allow nature to run it's course with it's own pleasing array of changing colors. Following are before and after pictures of some of the architectural restorations which have been performed by Rutland's Architectural Copper Work shop using pure copper replacement material.

Original Gargoyle Rain Spouts


Replacement Gargoyle Rain Spout


Old Balustrade - "Ornamental Railing with Balusters"


Original Baluster and Replacement Copper Baluster


Leader Heads - Original with Replacements







Garden Sculpture Restoration



Rutland's architectural copper work artisans are able to faithfully restore, reproduce or recreate historic architectural features and many sculptures.  Rutland's craftsmen also regularly perform custom metal fabrication or copper work which perfectly model an architect's or client's unique designs or drawings and manufactures to the exact size, finish and other specifications that are requested. 



8/31/2009 11:18 AM Eastern Daylight Time  #    Disclaimer  |   |  Trackback
# Wednesday, July 22, 2009
Rain gutters sometimes do not get as much thought behind their selection as other architectural features of a home or commercial building. Customary gutters often employed on buildings might even be rather drab and sometimes an afterthought. Rather than accentuate and enhance the building's architecture some gutter choices if not just dull may actually detract from the appearance of the home or building and be very unappealing. Yet barring wide overhangs and a steeply graded slope away from the building, gutters are essential for draining rainwater runoff from a roof away from the building protecting overhangs, eaves, walls or siding, windows, doors and assist keeping the foundation, crawl space or basement of the structure dry, thereby guarding against mold, rot and staining. Gutters also help prevent erosion of the top soil and landscaping around a building and shield people, walkways and entrances from sheets of falling water. Yes, becoming aware of all the available choices and features of guttering makes you a better wiser consumer. It also gives you an opportunity to choose a rain gutter system that doesn't just blend nicely into your building's architecture but actually enhances and upgrades the features, appearance and curb appeal of your real estate investment. Possibly you may start seeing guttering in a whole new light, and in planning and choosing your new gutters wisely, you are certain to be rewarded time after time again.

Rain gutters run the gamut from your run of the mill, same old - same old, aluminum K-style ogee gutters with rectangular corrugated downspouts, which are staples in some neighborhoods on those cookie-cutter homes, to the high end gutters purposefully designed to enhance a building's architectural features such as your integrated guttering or wood box gutter and those premium, elegant half round copper gutters and zinc gutters. There are still more gutter material choices including plastic or vinyl gutters, galvanized steel, galvalume and stainless steel gutters. As you might expect there is a wide range of pricing from your low end cheap vinyl gutter on up to that pricey redwood and stainless steel guttering. Cost is definitely going to be a big factor in many people's decision making on gutter choice. Assessment of your true cost extends beyond simply viewing a gutter system's initial purchase price and also includes analyzing the longevity of the guttering, plus any maintenance time and cost involved during the lifespan of the gutters such as: repairs, re-caulking, re-painting and partial or total replacement of a deteriorated gutter system. Another often overlooked cost is how the guttering choice will affect your real estate value. A poor guttering choice will detract from the building appearance and value, a typically common or acceptably sensible choice will hopefully maintain and uphold the property value and a visionary or astute choice will increase the real estate attractiveness, curb appeal and property value. A final consideration is the growing number of concerned people out there who also appreciate making the most environmentally green and eco-friendly choice.

Gutter Materials and Cost
Vinyl Gutters - Frequently a choice for your do it yourself price conscious people, these plastic or vinyl gutters oftentimes in plain white and sometimes in assorted colors are rust free, easy to trim or cut to size and are relatively cheap initially. Though 10 foot gutter sections may only run $3 to $5 at discount home outlets, with all the connectors, hangers, brackets and downspouts figured in they will cost you more like $3 to $5 per foot installed. Vinyl gutters can get brittle with age and exposure to the elements and may not have the strength to stand up to large amount of snow, ice, gale force winds and weight from a ladder or person climbing on to a roof. Vinyl also expands and contracts more than metal and can be problematic. Mostly they frequently look cheap, detract from your property's appearance and have a relatively short lifespan to boot. PVC or poly vinyl chloride gutters are not a very green or eco-friendly choice because of their short life and environmental health concerns. The Center for Health, Environment and Justice (CHEJ) termed PVC plastic as one of the most hazardous consumer products ever created, dangerous to human health and the environment throughout it's life cycle. When it is produced or burned PVC releases dioxins, potent synthetic chemicals that cause cancer and harm the environment.

Galvanized Steel Gutters - Steel coated with zinc to inhibit rust, was a common choice, especially before aluminum gutters appeared on the scene, as galvanized gutters are fairly strong and can stand up to ladders, fallen branches and weight unlike cheaper vinyl gutters. Galvanized gutters are also stronger and less susceptible to dents and damage than aluminum. Galvanized steel gutter pricing may run only $4 to $9 per foot installed and are seemingly a economical and practical choice. Yet even thick galvanized gutters will eventually rust through despite most of them being painted. Paint grip steel guttering is still galvanized steel that has been given a phosphate bath adding some to the corrosion protection but primarily providing a surface with better adhesion for paint. There are usually many color choices provided and different qualities of paint available. Galvanized gutters have to be maintained, inspected for cuts, metal exposure deterioration and re-painted during their practical life ranging from 7 to 20 years, depending on how corrosive their locale is and how well they are maintained.

Aluminum Gutters -  The most popular choice in gutters since they appeared on the market, aluminum gutters are rust free avoiding that concern with steel, iron and galvanized gutters. Aluminum is also lightweight making it easier and cheaper to work with. Aluminum gutters typically range in price from $5 to $9 per foot installed. Exposed to the elements however, aluminum will oxidize and wear quickly so aluminum is given protective coatings and paint. Just as with galvanized gutters, aluminum gutters need to be maintained and inspected regularly. Paint coatings have improved so during aluminum gutters typical useful lifespan of 25-30 years most paint coatings usually hold up barring scratches or damage to the paint. Aluminum gutters and downspouts are not as strong as steel gutters, especially the thinner offerings and can dent easily from traffic, branches, ladders, etc. Aluminum has a high rate of thermal expansion and contraction which can sometimes present problems especially in corners and seams. Gutter sections and terminations are typically caulked and as such the caulking will also have to be inspected and re-caulked. As with galvanized steel, there are usually many standard color choices available or custom paint matching can also be done at a higher cost. To have a different look than the same old common K-style aluminum guttering with rectangular corrugated downspouts, you can also obtain aluminum gutters in a more elegant half-round gutter shape and with smooth surface versus corrugated square or round downspouts. Hidden gutter hangers can be used or better yet decorative gutter and downspout brackets and a decorative leader head will improve appearance greatly, distinguish and enhance your home. Using thicker and so called primary aluminum material will add some to the strength, better able to withstand wear and abuse but still not up to the level of copper and steel.

Galvalume Gutters - In response to some of the limitations and disadvantages of galvanized steel gutters and aluminum gutters, galvalume gutters appeared on the scene. Galvalume is steel coated with a mixture of 55/45 per cent aluminum/zinc, resulting in a metal about as strong as galvanized steel but the with long-term rust and corrosion resistance more like aluminum or 2-4 times longer than plain galvanized steel. Galvalume can also be used as is without any paint and has a bright gray metallic appearance for about a decade gradually turning a dull weathered gray for the last 2-3 decades of it's typical lifespan. Processed galvalume can also be painted different colors just like aluminum gutters and while galvalume gutters cost a little more than either aluminum or galvanized steel gutters, galvalume not only will last longer, but is much stronger than aluminum and doesn't have the temperature expansion rate issues as does aluminum. Unfinished galvalume additionally enjoys the more green and eco-friendly avoidance of any kind of painting or coating.

Zinc Gutters - Zinc gutters have been popular in Europe for decades but have been slow to take hold in the U.S.  Zinc guttering is usually made from an alloy of 99.5 percent zinc with small amounts of copper and titanium added. Similar to copper, zinc is usually utilized in it's raw unpainted state and will develop a protective patina that protects the zinc gutter from weathering and corrosion. Weathered zinc has an attractive matte gray look somewhat similar to pewter that eventaully turns a bluish gray and is increasingly being incorporated into architectural designs that promote that look. Zinc gutters when the natural patina forms properly can have a very long lifespan typically somewhere between 40 and 80 years depending on environment. Zinc gutters may run $15 to $20 per foot installed, which is much more than aluminum gutters initially, but zinc gutters have over twice the lifespan, require no paint and very little to no maintenance. Zinc gutters being a premium gutter usually have more care taken in the installation, including typically riveting and soldering the seams and corners, providing more reliability and often less leaks and water damage. Unpainted zinc gutters also do not have VOC's released into the environment from any coating or painting process which some gutters require, so with that and their long lifespan, zinc guttering is considered very eco-friendly and green. Zinc gutters main issues deal with thermal expansion, restrictive gutter forming and installation, including sensitive soldering and cold temperature (below 45 degree) working restrictions. With accommodations and extra care taken, zinc gutters are not only a viable option but are one of the better ones.

Stainless Steel Gutters- Stainless steel is a steel alloy containing chromium which gives stainless steel it's rust proof and shiny properties and is familiar to everyone as it is widely used in kitchens and for eating flatware. Stainless steel is one of the strongest guttering materials as are all the steel based types and is also one of the most durable and longest lasting with a lifespan typically between 50 to 70 years. Stainless steel gutter systems work great where the gutters and downspouts are subject to commercial, abusive and high traffic conditions. If you are not enamored of the shiny, metallic look of stainless steel or the maintenance, cleaning and polishing to keep that look, there is a copper plated stainless steel called CopperPlus having copper's changing earth tone colors and tin plated stainless steel products such as Ugitop which replace regular stainless steel's shiny look with a matte gray surface. Similar to zinc and copper, the durability, weathering ability, long life and elimination of painting and coatings make stainless steel very eco-friendly and a good value where stainless steel's extra strength is needed even with it's high initial cost of about $18-22 per foot installed. Like zinc and copper, in the long run it can be less costly than short-lived products.
 
Copper Gutters - Copper gutters have long been considered the ultimate in guttering and for good reason. Copper gutters have always been the most elegant and aesthetically pleasing and also the most durable and longest lasting of all gutter types. It is not uncommon for copper gutters to have a lifespan of 60 to 90 years, up to triple that for aluminum. Copper guttering like zinc gutters are mostly utilized in their natural, unfinished state as copper develops it's own distinctive, protective patina through the years. Copper performs great in industrial cities, coastal and marine environments. Copper's protective patina gives it the ability to ward off corrosion and it's long wearing character. Copper patina varies by climate but generally copper starts out a bright salmon copper and gradually turns brown, then shades of reddish brown, grayish brown, greenish brown then finally a variegated light pastel green after 25 some years. The rich changing earth tone color palette is one of the prized features of copper. Like zinc gutters, copper guttering is riveted and soldered, so there are rarely any issues with leaks or repairs. Copper gutters will definitely upgrade and enhance any home or commercial building and add true curb appeal and value. While copper gutters can cost $15 to $24 per foot installed new, with copper gutter's super long life, little to no required maintenance, no painting, no leaks and 100% recyclability while retaining up to 95 per cent of raw copper's value, a great case can be made for choosing copper gutters. Environmentally speaking, copper is considered one of the greenest and most eco-friendly materials available and copper's total environment cost is lower than initially cheaper materials. Total environmental cost includes the costs of raw processing, manufacturing, installation, maintenance, re-cycling and multiple replacement costs, so durability and longevity do factor in greatly. For people that want to enjoy the durability, longevity, value and environment friendly nature of copper but would prefer gray earth tones, lead coated copper is available with the same same attributes as copper other than color. For those that would prefer something other than a lead coated copper there is now also a zinc-tin coated copper option available called Freedom Gray, which retains all of copper's advantages, while providing architects, designers with a gray earth tone to work with. Lead coated copper or Freedom Gray offer advantages over zinc gutters in being easier and more versatile to form, less restictive and easier to install, while being more reliable and durable in any weather situation and longer lasting. Copper gutters may typically be seen with decorative gutter hangers, smooth seamless round copper downspouts and decorative downspout brackets and oftentimes a decorative, distinctive conductor head or leader collector box. So configured copper gutters will enhance a home to where they are seen analogous to valuable jewelry and accent pieces and always at home with the finest architecture.

Integral or Wood Gutters - Gutters integrated or built into a homes eaves were more popular decades ago as are hanging wood gutters. Both integral and wood gutters have always had problematic issues such as waterproofing, weathering, leaks, rotting, maintenance, painting or staining, durability and water damage. Oftentimes, the inside of a wood gutter and downspout was lined with a metal such as copper to protect the wood, like a gutter in a gutter. Wood gutters are really not installed so much anymore outside of restorations and wood gutters pricing can easily run from $15 to $24 per foot or more depending on type of wood, lining and workmanship involved. With integral and wood gutters, frequent inspection and maintenance are definitely recommended to help prevent leaks from causing possible water damage to roof, fascia and walls.

Although stainless steel, zinc and copper gutter installed prices appear significantly higher than for galvanized steel and aluminum gutters, this is not because raw material cost for these premium metals is so much higher. The higher installed cost for these premium gutters is primarily due to the cost of additional labor and better materials used in what is a more involved and better installation. Gutter seams and joints are most always riveted and soldered in the best installations rather than merely caulked and overlapped. This much more labor intensive operation provides stronger and more leak free joints over the lifespan of the gutter. Better work and tolerances in corners, miters and seams increases cost but results in a more trouble-free and better looking installation. This is the norm and expected by customers of premium gutters. If aluminum and galvanized steel gutters were installed in a similar fashion as zinc and copper gutters, there would be a much smaller price difference. Thicker gauge aluminum gutters with a higher quality paint job such as Kynar is significantly higher quality and also higher cost than typical thin aluminum gutters with plain baked on paint finish that are much more typical. Thicker metal and better paint result in a better gutter that withstands more abuse and lasts longer. Using better materials and more meticulous aluminum gutter installations, though at much higher cost, would lessen such commonly seen occurrences as drooping gutters, buckled gutters, badly faded gutters, misshapen or bent gutters, leaking gutters, peeling or flaked off paint. True for most any product or service, you certainly get what you pay for and the same applies to rain gutters.

Rutland Gutter Supply has the largest selection of all different types and sizes of commercial and residential gutters and downspouts in the U.S.A.  Rutland fabricates rain gutters and downspouts out of any gutter material and also produces custom styles and sizes of rain gutters upon request. Rutland Gutter Supply stocks all the essential gutter supplies, gutter parts and downspout accessories needed for a complete eavestrough rain gutter system installation of the highest quality including decorative gutter hangers, downspout brackets - downpipe straps and custom conductor leader head all provided factory direct.

7/22/2009 7:36 AM Eastern Daylight Time  #    Disclaimer  |   |  Trackback
# Tuesday, June 02, 2009
Gutter gardens are receiving much buzz over the internet and are a good approach to generating fresh produce or a colorful display of flowers around your home. A gutter garden is especially ideal when space is at a premium or if you wish to have a tidy and more ergonomic gardening setup. Nothing is better tasting and more satisfying than freshly picked produce for that awesome salad, fresh salsa and a plethora of other healthy vegetable dishes. Gutter gardens are essentially akin to planters that hang from your house at a convenient height and are typically fashioned using some form of home guttering to serve as your planter. This article discusses and compares several types of commercially available gutters that are good options for use in a gutter garden. Then we will explain exactly which components you will need and how to assemble your very own gutter garden. I do not know who first came up with the idea for a gutter garden, probably someone a long time ago and it was never publicized. Now with power of the Internet word gets around. I did find an article from Martha Stewart Living dating March 2006 that called them "Garden Pots" and they used copper gutters stacked in several tiers to form their gutter garden. They were growing hanging ivy in them to form a living screen off of a porch, but could just as easily be growing flowers or produce in them. Hanging your gutter garden as they did with chains is another option to mounting on a wall, just make sure your chains, anchors and supports are all robust and secure.
 

From Martha Stewart Living - March 2006
"Surprising Garden Pots: Copper Gutters"

Re-using old guttering or buying cheap aluminum or plastic guttering are tempting options but may perhaps not be the best option. It is recommended you stay away from any kind of painted, rusted guttering or lead coated guttering for obvious health reasons if you are growing produce. Many plastics have unhealthy emissions and plastic gutters can also break down from the weight, UV sunlight and trowel work. It is best to use a gutter made from a pure metal that does not have any chemicals or paint applied, does not corrode or rust over time, is durable, long lasting, naturally weathers well, is aesthetically pleasing and is a genuinely attractive feature of your home. Steel and aluminum are relatively low priced but most varieties require some type of coating to resist rust and corrosion and coatings oxidize, scratch, are not durable, long lasting and mostly unhealthy too for a gutter garden. Galvalume is a zinc-aluminum coated steel that is a better candidate than either steel or aluminum alone, combining the corrosion and rust resistance of zinc and aluminum with the strength of steel but with an industrial looking gray metallic appearance and you would probably be tempted to paint this material. Three even better choices for your gutter garden are zinc, stainless steel and copper. Everyone is familiar with the appearance and attributes of stainless steel and it is a viable option. Stainless steel does not rust providing it's surface is not damaged and it is generally considered a healthy, sanitary material. Stainless steel's shiny appearance may be attractive or it may not blend in or complement your home's exterior. Pure zinc is a viable, healthy option that is durable, weathers well and zinc develops an attractive protective, grey patina that is somewhat pewter like though zinc is priced higher than galvalume and stainless steel. Then we have pure copper which may be the best choice for a multitude of reasons: copper has proven itself for centuries to be the most durable and longest lasting metal; copper weathers extremely well, forming a protective attractive patina; requires little to no maintenance; copper is attractive, aesthetically pleasing, elegant and complements most home decor well; copper is EPA approved antimicrobial, germicidal, antibacterial and fungicidal; copper is a key nutrient for plant life; copper is considered eco-friendly and is a green building material. These are all attractive and most desirable traits for use in your gutter garden. Copper although being our highest rated choice also has the highest initial cost of all the metals and metal alloys mentioned above. Copper's many and unique advantages, help justify it's premium cost, especially considering the relatively short lengths required for most gutter gardens, which put copper gutters' premium price within reach and affordability.

copper gutter system installed with copper downspouts
Copper Gutter System Installed

Once you have decided on the material for your gutter, you will then likely choose between three common styles of gutter: K-style gutter, half-round gutter and box gutter. A box gutter will give you the most volume with which to garden with, and as it's name suggests, it has a rectangular box appearance or if you like a plain box planter. K-style gutters are probably the most common residential gutters used in the U.S. and are somewhat boxy as well, though with a angled stepped front for a little more pizzazz. Half round gutters do look just like they sound, like half of a round cylinder or pipe and half-round gutters also have the most elegant appearance of all the various gutter types. There are also quarter round gutters which also are very attractive with their curved front. Quarter round and K-style gutters are generally available from 5 inches to 8 inches wide, half round gutters usually from 5 inches to 10 inches wide and box gutters are usually manufactured to size. Custom widths are also available through Rutland Gutter Supply.  Compare the different appearances of K-style, box gutters, half-round, quarter round and embossed gutters, all pictured below.

K-style gutters - Ogee Gutter
K-Style Gutters

box guttersbeveled box gutter
Box Gutter & Beveled Box Gutter

half round copper gutters
Half Round Gutters

quarter round copper guttercustom 1/4 round copper gutter
Quarter Round Gutter & Custom 1/4 Round Gutter

Embossed K-style copper gutter
Embossed K-Style Gutter & Half Round Embossed Gutter

In addition to choosing the material and style of gutter for your gutter garden, you will also choose the type of gutter hangers you will use to hang your gutter garden and the end caps used to cap off and finish the two ends of your gutter garden. There are several styles or types of gutter hangers available. So-called hidden gutter hangers are very commonly used and are called hidden because they are mostly not seen from the ground in a roof gutter system. Hidden hangers may not be the best choice for your gutter garden since they are positioned across the top of your gutter, they may obstruct or at least inconvenience your gardening work. A fascia mounting, squared-off gutter hanger with a front lip as pictured below may be better for box and K-style gutters while one of the decorative gutter hangers pictured below would prove ideal for the rounded gutters. A gutter spring clip holds the gutter in place when resting on a decorative gutter hanger and works well should you wish to remove the gutter easily for any kind of maintenance in another spot. You would use a gutter hanger every few feet to hold up the weight of your gutter garden, generally every three feet at least or every 2 feet if you also happen to live in the snow belt. You will also need to use so-called gutter hanger wedges, if your home's walls have an angled slope, to keep the gutter garden aligned perpendicular. Gutter hanger wedges are available in several sizes to address a variety of slopes in your home's siding or fascia. Installers typically use nails or screws to fasten gutter hangers and gutters to your home's wall or fascia. I would recommend a screw's added holding power recognizing a gutter garden's weight. Your choice of gutter end caps include flat end caps for all the various styles of gutters or also available for the half round guttering are radius end caps, which give your gutter garden ends an attractive and graceful rounded appearance. The gutter end caps are attached by both riveting and soldering them to the gutter. If choosing copper guttering for your gutter garden, it is recommended you use all copper materials for the guttering, gutter end caps, copper rivets, gutter hangers, hanger wedges and bronze or stainless steel screws. This is to maintain a uniform matching appearance and avoid corrosive effect of dissimilar metals. Below are pictures of various types of gutter hangers, gutter end caps, gutter spring clips and gutter hanger wedges.

k-style gutter end caphalf round gutter end cap
K-Style Gutter Flat End Cap & 1/2 Round Gutter Flat End Cap

copper radius end cap
Gutter Radius End Cap

hidden copper gutter hangerhidden gutter hanger
K-Style & Half-round Hidden Gutter Hangers

decorative scroll gutter hanger
Decorative Scroll Gutter Hangers

seahorse copper gutter hangerdecorative gutter hanger
Decorative Seahorse & Rope Gutter Hangers

fascia mounted gutter hanger
Squared-off Fascia-Mounting
Gutter Hanger w/Front Lip

gutter hanger wedges
 Gutter Hanger Wedges

gutter hanger spring clipsgutter copper rivets
Gutter Hanger Spring Clips   &   Copper Rivet


 Hanging Copper Rain Chains - Single & Double Loop

After you have decided on the exact style and material for your gutter garden components, measure the exact lengths of guttering you need and keep in mind that you can go with a double or triple decker design if you desire. Your gutter garden should be in a location where it will receive the amount of sunshine recommended for what ever you are planning to grow. After the components have been ordered and they have been delivered, you are ready to attach the guttering for your gutter garden to your house. Measure and mark off the locations for your gutter hangers, to keep them evenly spaced and horizontally level. If using hidden hangers place them evenly spaced across the top of the guttering and attach to the wall with screws and use wedges if necessary. If using a squared-off box hanger or the decorative rounded hangers, attach the gutter hangers to the house siding with screws using appropriate sloped wedges if necessary, lay your gutter on the hangers and attach the hanger spring clips between the gutter hanger and guttering. Now you are done and can fill up your gutter garden with gardening soil or some composite mixture of garden soil, peat moss, manure, fertilizer and moisture retaining granules. Plant your seeds, seedlings or plants, water and enjoy your garden!

Additional Tips:
 Avoid applying any chemicals or paint to the inside of your gutter garden for healthier plants and produce.  If you absolutely must paint to achieve a desired color match, then do so only on the outside surface. Stainless steel will need to be cleaned and polished occasionally to keep it's appearance while zinc and copper weather naturally and keep their beautiful, elegant appearance throughout their lifespan. Copper can be waxed regularly or even coated with a clearcoat or lacquer if you wish to keep the shiny new copper appearance but again do not apply any coating to the inside to avoid chemicals and to take full advantage of copper's natural germicidal, antimicrobial and fungicidal properties. Also any wax or coating is temporary and needs to be re-applied. The natural copper patina however needs little to no maintenance When copper weathers there is a natural patina that forms on it's surface which serves as a protective coating and the patina does not affect copper's antibacterial properties. The copper patina changes color with age, progressing from a shiny salmon color, to reddish shades of brown, brown, greenish brown and finally a light green pastel color. The outside patination process can also be accelerated if desired by applying selective accelerants. Copper is revered and prized for it's graceful, elegant appearance and gradually changing color throughout it's very long lifespan. Approximate copper weathering color chart is illustrated below. If you desire drainage for your gutter garden, you may either choose to drill a few small holes sparsely across the entire length or have your guttering fabricated with rain chain style taps every few feet along the length.

copper weathering color chart
Resource:
All types, styles and sizes of gutters and gutter materials discussed above can be obtained from Rutland Gutter Supply as well as all of the associated gutter parts and gutter accessories you will need for your gutter garden. Rutland carries the largest selection of gutter supplies in the USA with all the gutter accessories to match. Rutland also does custom metal fabrication and architectural copper work and ships all of it's products globally all over the world. If you like the general idea of a gutter garden but would prefer to have a custom sized planter made for you, Rutland can custom fabricate virtually any size and style copper planter you desire.

gutter garden - multiple tiers
Wall Gutter Garden Pictured by Suzanne Forsling, Juno, AK
6/2/2009 1:54 PM Eastern Daylight Time  #    Disclaimer  |   |  Trackback
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