FRstop 1-hour fire-rated cavity stop sock. Designed to restrict the spread of flames within external masonry and to further minimize the effect of flanking noise pollution at wall junctions.
Key Features
- FRstop cavity stop socks are lengths of low resin, non-combustible, rockfibre mineral wool sleeved in 35 micron polythene for on-site
- weather protection
- 1 hour fire integrity and minimum 15 minute insulation
- Independently tested by Warrington Fire
- Polythene encapsulated cavity stop sock
- Available in standard widths of 50, 75, 85, 90, 100, 115, 125 and 150mm
- Special cavity widths are available on request up to 300mm
- Meets the requirements of the Robust Detail, Approved Document B and NHBC Standards
- Boxed in smaller quantities for convenience
