Weathertight durable roof underlay is a composite waterproof under slate and tile barrier membrane designed for use on most types of ventilated cold or warm pitched roofs. It protects against wind blown rain and offers protection during construction and the life of the building.

Roofing felt Manchester waterproof Underlay membrane Weathertight Builders Manchester Lancashire
Weathertight are listed in; Builders Directory : Builders in Manchester : Builders in Lancashire