Fire Resistant Board For Sealing Service Penetrations In Walls Or Floors.
Specifically designed for sealing around service penetrations in walls and floors, a single Astroflame board (50mm or 60mm thick) can provide high levels of fire integrity and insulation. Tested in Block Wall, Concrete, Masonry, Plasterboard Partition and tested in Concrete Floors. Offering up to 4 hours fire resistance in accordance with BS476: Part 20: 1987 and EN 1366-3 : 2009. Up to Rw 48dB sound reduction achieved by using two boards. The Boards consist of a stone fibre core coated on both sides with Coat which transforms during a fire to prevent the passage of fire and smoke and the transfer of heat. Astro Batt cut edges or joints should be coated with Fire Rated Ablative Batt Coating-Spray Grade or Fire & Acoustic Rated Intumescent Mastic.