What Makes Metal Green?

Metal is represented by a wide-ranging family of products that can be engineered through coatings, finishes, profiles and textures to meet the needs of building owners and the performance standards of codes.  Below is a list of those products:

Adaptable and Green – Metal is the only material that can offer this comprehensive type of engineering so that  metal products can be applied to almost any component of a building envelope and designed to meet all codes and architectural designs.  This superior diversity and design flexibility is also one of the reason metal is so appropriate for green building applications.

Cool Roofing – The most talked about use of metal in green building is for cool metal roofing, which is helping curb energy use around the globe.  Cool metal roofs have been engineered and proven to provide high solar reflectance and thermal emissivity.  These are achieved through the choice of coatings and can be enhanced by special techniques.

ASV – A Cooler Technique – Beyond roofing product coatings are techniques that can enhance a roof’s energy-saving ability.  One proven method is to install the roof off of the deck surface, a phenomenon called Above Sheathing Ventilation.  Without ASV, the direct to deck heat is conducted through the sheathing and into the attic space of a building.  With ASV, the air space provides heating and cooling reductions because the heat is dissipated out in warm climates and the air gap acts as added insulation to prevent heat loss in cooler weather.

Solar Systems – Metal roofing is also an excellent platform for photovoltaic installations.  Peel and stick (amorphous) grid and crystalline panels can be mounted to a metal roof without penetrating the roof membrane.  Passive solar water heating systems can also be mounted on a metal roof. 

Walls – While the attention on energy efficiency has been focused on metal roofing, metal wall systems have become “cool” products.  Walls now can achieve a 10 percent reduction in energy needs. 

Environmental Impact – Metal has a favorable impact on the environment in other ways.  All metals are 100 percent recyclable and have a high range of recycled content.  Most metal is light in weight, which allows it to be installed over existing roofing products, reducing waste from old roof tear offs.  Metal is an inert material that has no off-gassing and no emitted VOC’s, which helps reduce a building’s carbon foot-print and mitigate the urban heat island effect.  Overall, metal offers more sustainable benefits than other building products.  It retains its properties over decades, offers a low life cycle cost, has low impact on the environment, offers energy efficiency in any climate, and improves air quality during construction and when the building is occupied.

Metal building products are well-engineered, highly adaptable, have low environmental impact, provide documented performance and are good for the bottom line.  This offers many options to designers and builders and huge benefits to green building.

For more information on green building, please visit:  www.metalarchitecture.com

Source:  Green Metal Inc.

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1 Response to “What Makes Metal Green?”


  1. 1 green steel buildings November 4, 2009 at 10:09 am

    Green steel building products are well-engineered, highly adaptable, have low environmental impact, provide documented performance and are good for the bottom line. This offers many options to designers and builders and huge benefits to green building.


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