Devfus is used in wind turbine blades, marine hulls, and automotive crash structures. Its crack sensitivity arises from a high crosslink density in the polymer backbone (likely polyurethane or cross-linked PVC).

If the foam is near a window, doorway, or foundation edge, cover it with wood trim, stucco, or a specialized UV-resistant foam coating. Exposed foam is a ticking time bomb for cracking.

If the cracking is severe and affecting the performance of the product, it might be worth contacting Devfus customer support for advice. They may offer repair solutions, replacement parts, or in some cases, a full replacement depending on the warranty and the specific issue.