Protect A1 is a third generation roofing underlay which has been developed specifically to overcome the disadvantages of traditional Type 1F felts and second generation plastic sheet materials.
Protect A1 is a third generation roofing underlay which has been developed specifically to overcome the disadvantages of traditional Type 1F felts and second generation plastic sheet materials.
This roofing underlay is BM Trada certified and can be used for all pitched roof constructions that are both tiled and slated, whether the insulation is at ceiling joist level or at rafter level. Roof space ventilation should be provided at both low and high level as with all impermeable type HR roofing underlays regardless of insulation type or position. It has unrestricted use from zones 1 to 5 at the maximum batten gauge of 345mm, to BS 5534.