Promast Expert Polyurethane Foam

A high-efficiency polyurethane installation foam suitable for gun application by professionals. Developed for door and window frames, gap-filling and insulation applications.

Promast Expert is a high-strength polyurethane foam formulated for gun application in professional use, with good adhesion to surfaces. It is used to fill the gaps around door and window frames, in the penetration gaps of gas, water and electrical installation pipes, and to fill holes, cracks and gaps for insulation purposes. It has a small and regular cell structure, does not run on vertical surfaces and, thanks to its low expansion, does not apply excessive pressure to surfaces. The cured foam can be sanded and painted; it bonds strongly to common building materials.