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Fiber Glass and Slag Wool Insulation Good for the Environment - 1/31/2005 - Real Estate Products Services

Fiber Glass and Slag Wool Insulation Good for the Environment

According to a recent survey of the North American Insulation Manufacturers Association (NAIMA), its members in 2003 used more than 1.6 billion pounds of recycled post consumer glass and blast furnace slag to produce thermal and acoustical insulation. In the last decade, the association’s members have used close to 21 billion pounds of recycled materials.

Headquartered in Alexandria, Va., NAIMA is a member of the National Council of the Housing Industry — the Supplier 100 of NAHB.

The amount of glass and slag that was diverted from the waste stream by NAIMA members in 2003 would fill a football field plus the end zones to a depth of more than 380 feet, the association says.

As much as 40% of fiber glass insulation is manufactured with recycled glass, and the base material is sand, which is a rapidly renewable resource that is widely available, NAIMA says.

Slag wool insulation is manufactured from blast furnace slag, which is a byproduct of steel manufacturing. The secondary material ends up in landfills if it is not recycled in manufacturing.

NAIMA says that manufacturing fiber glass and slag wool insulation is an energy-intensive process, but the products will save more than 12 times the amount of energy used to produce them in their first year of use alone.

This feature is solely for educational and informational purposes. Nothing on this page should be construed as policy, an endorsement, warranty or guaranty by the National Association of Home Builders of the featured product or the product manufacturer. The National Association of Home Builders expressly disclaims any responsibility for any damages arising from the use, application or reliance on any information contained on this page.

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