Sturdy-R Insulating Sheathing from The Dow Company consists of fiberglass facers that are fused with space-age resins with a polyisocyanurate insulation core to form boards of exceptional strength. It is available in 4-foot × 8-foot and 4-foot × 9-foot sizes. Use Sturdy-R for virtually any type of siding, including stucco. Sturdy-R is used for residential construction having an interior finish of a minimum ½-inch gypsum board or the equivalent thermal barrier. Circle
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In My Own Words"Sturdy-R has the insulating values that we look for. We use it for our wall insulation, and we put it under our siding to give an added R-value to wall the home. The one-inch product has an R value of five."
