TIMCO B3 General Purpose Fill & Fix Expanding Foam is a high-quality polyurethane-based foam designed to provide exceptional thermal and acoustic insulation. It expands up to 30 times its original volume, dries quickly, and can be sawn, sanded, and painted once fully cured. Ideal for filling and insulating irregular or hard-to-reach gaps, the foam expands to seal cavities, reducing heat loss and sound transmission. It can also be used as a temporary seal.

• CFC-free formula
• Fast curing
• Sandable and paintable
• Can be plastered
• Expands up to 30 times its original size
• Excellent thermal and acoustic insulation properties