Soudal Genius Gun Expanding Foam Gap Filler 750ml 175527Soudal Pro Expanding Foam Genius is a self expanding foam with a built in genius applicator that eliminates the need for a gun. Reusable up to 6 weeks after initial use, water resistant, will not shrink or expand once cured and fast curing. It is ideal for filling gaps and cavities, joints, pipe penetrations, and installing windows and door frames. Can also be used as an air seal, improving thermal and acoustic insulation. Can be cut, sanded,