Sista 520g Polyurethane Expanding Foam Filler Aerosol

Sista 520g polyurethane expanding foam is a single-component aerosol filler designed for sealing gaps, cracks, and voids in construction, renovation, and maintenance applications. The foam expands to fill irregular spaces and cures to a rigid structure that can be trimmed, sanded, and painted for a professional finish. Ideal for electricians, builders, and contractors working on wall penetrations, window frames, and structural sealing.