4334 N. Meridian Ave.
Oklahoma City, Oklahoma 73112
Office: 405.601.6147
Fax: 405.212.4931

GREENGUARD Environmental Institute Recognizes Firestone Products

Firestone is pleased to announce that recent testing at Air Quality Sciences has resulted in a positive showing for three Firestone polyiso insulation products. RESISTA™, ISOGARD™ HD and ISO 95+ GL are now recognized by the GREENGUARD Environmental Institute as resistant or highly resistant to mold growth based on independent testing using GREENGUARD test method GGTM.P040 for microbial resistance. This method, which meets the requirements of ASTM D6329, indicates the product’s resistance to mold growth at adverse conditions.

The test is conducted by inoculating the samples with spores of Penicillium brevicompactum and transferring to a static environmental chamber maintained at 95% relative humidity and 25°C (77°F). These samples are then incubated for three weeks to determine the susceptibility to the growth of mold. Once the samples are removed, they are ranked on a scale of 1 (highly susceptible to mold growth) to 4 (highly resistant to mold growth).

Firestone’s results are listed in the table below:

*To view the listing, or find out more information on GREENGUARD, please visit www.greenguard.org.

These results show Firestone’s continued commitment to environmentally safe products, proving yet again that “Nobody Covers You Better” than Firestone.

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    Copyright 2018 Heartland Architectural Products. All Rights Reserved.

    4334 N. Meridian Ave.

    Oklahoma City, OK / 73112

    Phone (405) 601-6147 / Fax (405) 212-4931


The information presented on this website was assembled with care and is believed to be current and accurate on the date presented; however, the information was prepared by the manufacturers represented and not by Heartland Architectural Products LLC, Kevin W. Decker and David Gary, who cannot and does not extend any warranty either express or implied for the company or themselves or on behalf of the manufacturer, all of which are disclaimed, including without limitation, the implied warranty of fitness for a particular purpose. Services by Heartland Architectural Products LLC, Kevin W. Decker and David Gary are not intended or offered in substitution for the design professional’s judgment and due diligence. It is expected that a design professional will exercise professional judgment and due diligence before issuing Contract Documents for a specific application under a professional seal and signature in accordance with applicable laws.