Affordable housing and commercial building construction initiatives often grapple with how best to employ cost-effective solutions without compromising quality or sustainability. Foam plastic insulating sheathing (FPIS) can help address this challenge by offering an optimized approach to construction.

The presence of an airspace enclosed within a building envelope assembly is known to contribute to the overall thermal performance of the assembly. However, the actual R-value of an airspace can vary significantly depending on various conditions of use, such as the air-tightness of the assembly of materials enclosing an airspace.