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Fiber Glass, Rock Wool, and Slag Wool Have High Percentage of Recycled Content
Home » News » Fiber Glass, Rock Wool, and Slag Wool Have High Percentage of Recycled Content

Fiber glass, rock wool, and slag wool insulations use a high percentage of recycled material which helps the environment by diverting materials from the solid waste stream.

Using recycled materials in the manufacture of insulation prevents depletion of natural resources. Today's fiber glass insulation can contain upwards of 70% recycled glass, but on average will typically contain 50% recycled glass. Slag wool insulation can contain up to 90% recycled content, but on average, uses approximately 70% blast furnace slag.

The North American Insulation Manufacturers Association (NAIMA) tracks the use of pre- and post- consumer recycled materials in its members' insulation products.

According to the most recent survey:

U.S.A manufacturers used almost 1.6 billion pounds of recycled glass in the production of residential, commercial, industrial, and air handling thermal and acoustical insulation. Manufacturers estimate they will use more than 1.7 billion pounds in 2013.

Ø NAIMA Canada members together used nearly 300 million pounds of recycled glass in the production of insulation products.

U.S.A and Canadian manufacturers used more than 474 million pounds of recycled blast furnace slag in the production of thermal and acoustical insulation.

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