TIMCO B1 Fire Rated Fill & Fix Expanding Foam is a premium-quality, fire-resistant polyurethane foam designed for outstanding performance in fire-critical applications. Its advanced cell structure also provides excellent thermal and acoustic insulation. Tested to BS 476-20, EN1366-4, EN13501, and DIN4102-1, this foam is suitable for applications requiring up to 4 hours of fire resistance.

• 4-hour fire rating
• CFC-free formula
• Fast curing
• Paintable and plasterable
• Expands up to 30 times its original volume
• Excellent heat and acoustic insulation
• For 30 and 60-minute fire door applications, use Fire & Acoustic Seals Fire Door Foam (FAS-750G)