XPS rigid foam board offers several advantages including high compressive strength, low water absorption, and consistent thermal performance. The closed-cell structure of XPS foam prevents moisture penetration, which makes it ideal for below-grade applications such as foundation insulation and basement walls. In addition, XPS boards maintain stable R-values even in humid environments. Because of these characteristics, XPS rigid foam board is widely used in demanding construction environments where insulation must withstand mechanical loads and moisture exposure.

