For perimeter pointing around wood and metal window and door frames; Trowel mastic is used. Trowel mastic is available in a range of sizes which include 1 litre, 2.5 litre, and 5 litre.
Bitumen Trowel Mastic: What Is It?
Bitumen trowel mastic is a black, fiber-reinforced bituminous material. The product has a surface barrier, but below it is still flexible enough to allow some movement. Can be applied to roofing felt,metal gutters, mastic and corrugated iron and downpipes.
Trowel Mastic
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