ROCKWOOL TCB Cavity Barrier  


ROCKWOOL Cavity Barriers - TCB Cavity Barrier and PWCB Cavity Barrier - have been developed to exceed minimum building regulation requirements for fire resistance within concealed wall cavities. Tested and assessed to BS476: Part 20, they provide up to 60 minutes fire resistance (integrity and insulation).


  • Performance is not affected by movement in the building, shrinkage or thermal change 
  • Durable 
  • Can be used vertically or horizontally 
  • Easy to install