Roxul. The maker’s ComfortBatt R15 and R23 products have both earned the Environmental Protection Agency’s (EPA) Energy Star label. The fire-resistant insulation is made from a material called stone wool, and is suitable for use in exterior walls, attics, crawlspaces, and basements. The stone wool’s thermal properties keep homes warmer in winter and cooler in summer, the maker says. EPA estimates project savings of up to 20% with the material. 800.265.6878. www.roxul.com.
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