Fire & Acoustic Seals' Intumescent Acrylic Sealant swells when exposed to temperatures in excess of 125℃ to prevent the passage of fire and smoke and has a fire rating of up to 4 hours in certain joint configurations.
Fire rated to BS476 Part 20/22: 1987 and EN 136-4 (2006).
Acoustic rated to BS EN ISO 140/3. Tested for air permeability to EN13141-1
Available in white or brown