Sandwiching expanded polystyrene between two layers of OSB, the maker says its SIPs offer a 55% higher whole-wall efficiency than traditional 2×6, R-19 construction. By creating a virtually airtight building envelope, the panels’ energy efficiency can lower homeowners’ expenses up to 60% and reduce necessary HVAC equipment size by as much as 40%, the maker says. 800.275.7086. www.pbssips.com.
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