Premium underlays for lead roofing, cladding and weathering applications.
Conform to BS EN 1521/ A1F
Are suitable for smooth plywood decking (underside of decking must be ventilated)
Can prevent chemical attack from smooth concrete, stone or oak surfaces
Must be fitted over whole substrate area
|Uniclass 2015||Building papers (Pr_25_57_10_09)|
Waterproof, reinforced building paper for use as an underlay, separation, curing layer and vapour check membrane.
Polyethylene coated building paper for use as a damp proof membrane.
|Standard product features|