The IKO SBS Premium Torch-On Underlay is a fully bonded, torch-applied, polyester-reinforced, and SBS-modified bitumen underlay. It has an upper surface finish of sand and a thermofusible film on the underside.
The IKO SBS Premium Torch-On Underlay is intended for use as an underlay or intermediate layer within a built-up roofing system.
Torch-applied – can be applied all year round as less affected by weather and temperature variations. Can be considered for use within a torch-applied system overlaying existing bitumen roofing.
Polyester-reinforced carrier – provides a strong base material.
SBS-modified bitumen – retains flexibility under ambient temperature fluctuations for system longevity, as per testing.
Sanded finish – provides surface texture for adhesion of the proceeding torch-applied capsheet.