DuPont™ Styrofoam™ Cavitymate™ Plus Extruded Polystyrene Insulation is an XPS insulation board with higher compressive and flexural strength than our standard DuPont™ Styrofoam™ Brand Cavitymate™ Insulation. It features square edges on all four sides and a special 16” width that makes it easy to fit between brick ties in cavity wall applications. The Styrofoam™ Brand XPS product line gives you the proven thermal and moisture performance of the original XPS, plus the product options you need to design and build energy-efficient, resilient structures all the way to the top. It’s lightweight and easy to install, which makes the work go faster, and it’s readily available through our wide distributor network. When and where you need it, Styrofoam™ Brand is there.