Over and out: Exterior insulation for roof assemblies

A whole-house continuous insulation strategy includes the roof

An exterior insulated roof—also known as an “overroof”—is a critical part of the continuous insulation whole-house strategy to eliminate thermal bridging and improve durability of the assembly. Maintaining thermal continuity is important in any climate for efficiency, whether you’re heating or cooling the home.

Catch the recorded session of the R‑Class Roundtable, where Randy Williams and Travis Brungardt and guest builder Randy Rand, discussed the many factors to consider when choosing exterior continuous insulation vs. interior batts, the benefits of stone wool insulation in these assemblies, and when it makes sense to consider a mixed material design.