Perforated preparation layer for built-up roofing systems.
An oxidized bituminous membrane with glass fibre core and 25 mm wide perforations, designed for use as a preparation layer for partially bonded built-up roofing systems.
J41/12 Built-up reinforced bitumen membrane cold deck roof covering
J41/10 Built-up reinforced bitumen membrane warm deck roof covering
J41/400 Built-up reinforced bitumen waterproof covering
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