A good example of a durable long-term roof system is two-coat mastic asphalt, providing a waterproofing thickness of 20mm, which is then protected with thermal insulation and stone ballast. Recently, ...
Permascreed is a new mastic asphalt screed from Permanite Asphalt which offers a speedy way to create drainage falls and a stable base for flat roof waterproofing systems and mastic asphalt car parks.
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