This medium-grade bitumen underlay is designed for use in flat roofing applications, supplied in a 20m x 1m roll. It is suitable as a base or intermediate layer within multi-layer torch-on felt systems, offering support for the upper waterproofing membranes.
Frequently used by professional roofers on commercial and domestic projects, it is applied with torch-on techniques for secure adhesion. This underlay is well-suited for new installations or refurbishments where a durable, consistent substrate is required beneath the final roof covering.
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