Rural America intrinsically understands the value of being Green.

Building sustainably is nothing new to rural America. Farmers have harnessed the power of wind, water and sunlight for millennia. They’ve also taught the world invaluable lessons about taking better care of our natural resources, so that they’re available for future generations – the very definition of sustainability.

Metal Sales continues to be a leader in the important topic of sustainability by adopting technologies that enhance the sustainable attributes of our products and by innovating systems that help to integrate our products with renewable energy technologies. Here are some of Metal Sales’ sustainability highlights:

 

Material Efficiency

Recyclability

At the end of their long lifespans, Metal Sales products can be directly recycled without complication. Any grade of steel can be recycled into top quality new metal, with no “downgrading” from prime to lower quality materials during the process.  42% of crude steel produced is recycled material1.

Because of the ease with which metal is recycled, its ability to be recycled infinitely without degradation, and its wide ranging applications, metal will continue to command top dollar in scrap markets. This market force ensures that the material is re-used and not landfilled. 

Also, compared to asphalt shingles for roofing, Metal Sales roofing products are far better for the environment. A very small percentage of asphalt shingles are ever recycled.

In fact, they account for the highest percentage of building materials landfilled today.

Plus, asphalt shingles are a petroleum-based product that further taxes our world’s reliance on fossil fuels.

 

 

Long Life Cycle

Metal Sales products enjoy very long life cycles compared to alternative products. Products that don’t require replacement (or require less frequent replacement) during the lifespan of a building are generally preferred. The long life cycles of Metal Sales products makes them both financially and environmentally efficient.
According to the Metal Roofing Alliance

"You can expect a metal roof to last at least 2 to 3 times longer than a regular roof. In general terms, count on a metal roof lasting 40 to 60 years and beyond. 

To put it in context, the average life span of an asphalt roof is 12 to 20 years. That lifespan can be shorter depending on the pitch of your roof and the climate in your area. Made of oil impregnated paper or fiberglass, asphalt begins to deteriorate as soon as you expose it to normal weather. A metal roof, however, will never decompose. 

Other roofing materials like wood shingle, shake and tile have varying degrees of weather-related problems that lead to breakdown. Wood shingle and shake roofs often need replacement before twenty years. Concrete tile roofs can crack and warp in the freeze/thaw cycle of more northern climates. 

All of the above roofing materials are well-outlasted by metal roofing, which retains its good looks and durability decade after decade after decade." 

 

Energy Conservation

Cool Pigment Technology

All standard Metal Sales color coatings are listed with ENERGY STAR® for their ability to reflect the sun’s heat, and many are listed by the Cool Roof Rating Council for both their reflectivity and low emissivity. These special coatings explain how a Metal Sales roof can reduce a roof’s surface temperature by up to 100° F, dramatically decreasing a building’s heat gain and reducing peak cooling demand by 10-15%. As roughly one-sixth of all electricity produced in the U.S. is for cooling of buildings, this feature of Metal Sales products is extremely beneficial for the conservation of electricity.1

Of course, the walls subject to the sun also contribute significantly to a building’s solar heat gain. As all Metal Sales coatings are made from cool pigment technology, energy savings are also realized from Metal Sales wall systems.

1www.energystar.gov

 

High-Performance Roofing

Cool roofs are designed to maintain a lower roof temperature than traditional roofs while the sun is shining. Cool roofs – like those made by Metal Sales – promote the more efficient use of energy.

The low thermal mass of metal roofing means that it dissipates heat very quickly once the sun goes behind a cloud or sets for the day. Other roofing materials have greater thermal mass and will continue to radiate captured heat into the structures beneath them even when the sun is not shining.

High-Performance Siding

Metal wall panels can provide a tight building envelope for less air loss and better thermal performance. Today, the preferred method of exterior wall construction involves using continuous insulation located outboard of thermally conductive steel framing.  

Accommodating this additional layer of continuous insulation requires that wall cladding materials are located further outboard in cantilevered fashion, sometimes as much as nine to ten inches away from steel framing members. In this design configuration, reducing the weight of the cladding material to prevent sagging is paramount.

Metal Sales single skin wall panels are an ideal choice owing to their light weight. Weighing from just one to one-and-a-quarter pound per square foot, the lightweight nature of Metal Sales wall panels means they can more easily be employed in high-performance exterior wall construction.

  

 

Integration with Renewable Energy

Roof systems from Metal Sales provide the durability, exceptionally long lifespans and limited maintenance that make them the ideal platform for renewable energy technology.

Metal Sales continues to develop methods that enable renewable energy technology to be more easily integrated into our products and systems. Examples include the integration of  polycrystalline and thin-film laminate photovoltaics, micro wind turbines, solar heating and potable rainwater harvesting systems into our metal roofing systems.
 

Micro Wind Turbines – These smaller, lightweight but powerful devices are easily attached to the standing seams of Metal Sales roof systems. Specially engineered clips, which do not compromise the roof’s weathertight integrity by penetrating the metal roofing panel, are used.

The roof also maintains its ability to expand and contract freely in times of temperature differentials.
 


 


Solar Heating Integration – The sun beating down on a roof is obviously the primary source of unwanted solar heat gain in a building. Cool coating technology helps to significantly reflect the sun’s energy away from a building.

Additionally, the thermal energy that remains can be used to help heat air and water for building operations. Today, standing seam metal roof systems are successfully being employed to accomplish this.


 

 

Polycrystalline Photovoltaic (Solar) Panels – This solar-energy-producing technology is very effective, but also heavy. Metal Sales structural standing seam roof systems provide the structural strength to support expansive arrays of PV panels.

Polycrystalline PV panels are attached to the standing seams of a Metal Sales roof by using specially engineered clips, so that installation of the panels does not compromise the roof’s weathertight integrity by penetrating the metal roofing panels.

The roof also maintains its ability to expand and contract freely in times of temperature differentials.

 

 

Thin-Film Laminate Photovoltaics (Solar)  – This technology is an excellent choice for Metal Sales standing seam roof systems.

The long, flexible and light-weight rolls of PV laminate are manufactured to adhere perfectly onto the flat surface of each roof panel.

Unlike polycrystalline panels, this option maintains the aesthetic form of standing seam metal roofs but may not perform as optimally as polycrystalline in less sunny environments.






 

 

 

 


 

Read More about the perfect match between metal roofing and solar technology in
"Hot Meets Cold," an article written by Metal Sales experts in InterPV magazine.

 

Potable Rainwater Harvesting

Metal Sales roof systems are ideal as catchment surfaces for potable rainwater harvesting, an increasingly popular practice throughout the world and in parts of the U.S. that face a scarcity of water. Rainwater harvesting system engineers prefer metal roofs over other options for several reasons and especially for potable water harvesting systems that have more stringent requirements. Engineers prefer metal’s slick surface that makes it easier to keep clean of dust, debris, bird droppings, etc. Also, wood and asphalt shingle and tar and gravel roofs all hold and harbor many pathogens and leach toxins into water. Metal roofs do not contain these toxins. Finally, while clay and concrete tile roofs can be used for potable rainwater harvesting, their porous natures create a danger for bacterial growth, and can cause the loss of as much as a 10 percent of water from inefficient flow and evaporation.1

"Metal Roofs Provide an Ideal Platform for Rainwater Capture" (MetalMag, February 2010) 

*Note: Please check with your local jurisdiction about the laws in your area governing rainwater collection/harvesting. See www.ncsl.org for a list of states that allow for rainwater harvesting and how the collected water can be used.

 

Building Re-Use

Building rehabilitation and re-use can be environmentally advantageous compared to building new, but Metal Sales products and systems also make retrofitting economically advantageous. Their long-service lives make them an ideal choice for retrofit projects.

Metal Sales offers products and systems designed to make the remodeling and retrofitting of homes and buildings a more viable option than demolishing and re-building them. Metal Sales Retro-Master™ re-roofing system exemplifies one such product.  Metal Sales Retro-Master™ allows a new insulated high-performance metal roof to be installed directly over any existing old or inefficient roof, whether it’s sloped or flat. These systems do not require removing the old roof, and instead use the existing roof as a platform on which to build the new roof.

Facade rehabilitation is also achieved more affordably using lightweight Metal Sales wall panels as rainscreen cladding. To do so, a layer of continuous insulation is added to old masonry or EIFS walls. Next, adjustable vertical subgirts are put in place to attach the new wall panels and to correct for walls that are out of plumb. Then, pristine new lightweight Metal Sales wall panels are installed as a new facade.