One-component, low-expansion polyurethane foam specifically formulated tor use in the widest range of climates and temperatures on windows, doors, gaps and cracks. Exterior and interior uses. Formulated to air seal gaps around rough openings of windows and doors. Stops drafts and saves energy with a permanent, airtight, water-resistant bond to vinyl, wood and metal. Can also be used for wiring and plumbing penetrations, HVAC ductwork, basement and crawlspace drafts, sill plates, rim joists, attic hatches, and pest entry points.

ALSAN FOAM UNI W is a one-component, moisture curing, PU foam for cold conditions providing thermal and sound insulation. ALSAN FOAM UNI W is also recommended for fixing and insulating of door and window frames, filling and sealing of gaps, joints and cavities, filling of penetrations in walls and insulating electrical outlets and water pipes. ALSAN FOAM UNI W is over paintable, mold proof and waterproof. It is suitable for indoor and outdoor applications