Cavity Fire Barriers

U-Spec Cavity Barriers are manufactured from rock mineral wool which has a Euroclass A1 fire rating. The mineral wool is enclosed in a sleeve of polythene, and the barriers incorporate a self-adhesive strip to facilitate fixing to appropriate substrates. They are installed in the cavities of external walls, both timber frame walls and other types of construction, to help meet fire, thermal and acoustic regulations. The barriers have been fire-tested for vertical and horizontal installation.

Application

Fire - U-Spec Cavity Barriers are installed in concealed cavities of external walls of buildings to inhibit the spread of fire.
They are available in a standard range of sizes and configurations to suit wall cavities up to 150mm in width and are designed to help compliance with the fire safety requirements of the Building Regulations and Codes as follows:

England and Wales: Approved Document B and BS9991
Scotland: Scottish Technical Handbook, Section 2 Northern Ireland: Technical Booklet E, Section 3

Thermal

They also help in compliance with the thermal requirements of Approved Document L (England & Wales) and Section 6 (Scotland) by reducing the thermal bypass effect in party walls. By providing edge-sealing to separating cavity party walls at their junction with the cavities of external walls, U-Spec Cavity Barriers help to achieve a zero U-value, as defined in the Building Regulations.