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The IKO SBS Standard torch-on Underlay is a fully bonded, torch-applied, glass-reinforced, and SBS-modified bitumen underlay.
It has an upper surface finish of sand and a thermo-fusible film on the underside.
The IKO SBS Standard torch-on Underlay is intended for use as an underlay or intermediate layer within a bituminous built-up roofing system.