Sika Boom-AP is a fast curing expanding foam that is handy for reaching difficult access areas that need to be filled. It can be used as a fixing and insulating foam for filling gaps and voids, blocking out dust, noise and draft, installation of window and door frames or insulation of pipes.

• Can be used when held upside down – reaches difficult access areas that need to be filled
• Suitable for use outside
• Can be cut, sanded and painted
• Has excellent adhesion to most substrates
• Quick and easy gap filler