CertainTeed. Bringing its first housewrap product to market, the maker introduces CertaWrap Weather Resistant Barrier. CertaWrap is designed to reduce drafts, thereby increasing a home’s energy efficiency. The material also provides water holdout, moisture vapor transmission, and surface resistance, and resists mold and mildew growth. CertaWrap’s StudFinder system helps installers easily match fasteners with studs in the unfinished wall. 800.233.8990. www.certainteed.com.