New BBA Certificates added between 26 July 2005 and 11 September 2005. 05/4239 CHESTERTOP - CHESTERFELT LTD. Two-layer polypropylene sheet for use in unsupported, ventilated pitched roofs.

05/4240 CHESTERBREATHE ACTIVE AND RAPID LININGS IN ENERGY-EFFICIENT NON-VENTILATED COLD pitched roof SYSTEMS - CHESTERFELT LTD.

Multi-layer spunbonded, non-woven breathable membranes for use in non-ventilated, cold pitched roof systems.

05/4252 BWK TYPEF ROOF TILE UNDERLAY - BWK DACHZUBEHOR GMBH.

A four-layer polypropylene sheet for use as an unsupported roof lining material.

05/4254 APPLY3 FPO ROOF WATERPROOFING MEMBRANES - MARLEY WATERPROOFING.

For use in fully adhered systems on flat and pitched roofs with limited access.

05/4255 QUINN THERM QW PARTIAL FILL CAVITY WALLBOARD QUINN THERM LTD.

Rigid polyisocyanurate foam board for cavity wall insulation.

05/4209 DALTEX ROOFTX MAXI BREATHABLE ROOF TILE UNDERLAY - DON AND LOW LIMITED NONWOVENS.

Roof tile underlay for use as an unsupported or fully supported roof lining for tiled/slated pitched roofs.

05/4236 DALTEX ROOFTX VAPOUR PERMEABLE ROOF TILE UNDERLAY IN ENERGY-EFFICIENT NON-VENTILATED COLD PITCHED roof systems - DON and LOW LTD NONWOVENS.

A water vapour permeable film laminated between two layers of non-woven polypropylene for use in non-ventilated cold pitched roof systems.

05/0152 HYDROTECH MONOLITHIC MEMBRANE 6125 ROOF waterproofing membrane - ALUMASC EXTERIOR building products LTD.