This undertile felt is a traditional roofing membrane, supplied in a 1 metre by 15 metre roll, designed for application beneath roof tiles and slates. The felt acts as a secondary barrier against water ingress, contributing to the overall weather resistance of pitched roofs.
Commonly used by roofers as an underlay in both new-build and refurbishment projects, it is laid over rafters before tiles or slates are fixed in place. Suitable for a range of roof types, it provides additional protection during construction and ongoing service life.
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