Sentences with phrase «built assemblies insulated»
Industry experience has demonstrated that stick - built assemblies insulated with sprayed polyurethane foam insulation have higher levels of airtightness than conventionally - constructed, batt insulated assemblies.
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These risks are addressed in current building code with the requirement for air - impermeable insulation (i.e., rigid plastic foams) on the exterior side of the roof assembly; air - permeable (fibrous) insulation makes up the balance of the insulating value.