ROCKWOOL PWCB Party Wall Cavity Barrier has been created to provide excellent levels of fire stopping for timber frame and masonry properties. They have been designed to meet building regulation requirements for fire resistance in concealed wall cavities, having been tested and assessed for up to 60 minutes’ integrity and insulation, exceeding the minimum requirements.

This cavity wall insulation product has been created from non-combustible stone wool and wrapped within a resilient polythene sleeve which acts to provide weather protection during installation. An all-in-one solution, the ROCKWOOL PWCB cavity barrier also achieves the trilogy of requirements for fire safety, acoustic flanking and thermal bypass in one single product whilst providing effective perimeter edge sealing, reducing the leaking of air and associated heat loss.

Euroclass A1 fire rating

Developed to exceed minimum Building Regulation requirements for fire resistance within concealed wall cavities. 

Prevent flanking noise transmission, along concealed cavities in both external and separating walls.

Unaffected by building movement

Cavity Width: 141-150mm
Physical Thickness: 160mm
Width: 200mm
Length: 1200mm
Quantity Per Pack: 6
Fire Resistance: 60min
Reaction to Fire: Euroclass A1