What’s the paper-like wrapping I see on new homes before the exterior siding goes on?
It is increasingly common for quality-conscious builders to add an extra layer of weather protection around the outside of the house. Called an air barrier or “housewrap,” this layer is installed as a continuous material just behind the siding, stucco, or brick finish. The housewrap provides a barrier blocking the exchange of air through the structure, thus reducing heating and cooling costs. Housewrap also blocks moisture from getting into the walls where it can damage the insulation and framing.