Specification
Features & Benefits- 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
- Meets the requirements of the Robust Detail, Approved Document B and NHBC Standards
