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Base Layer

SBS Modified Reinforced Bitumen Membranes

EshaTherm TK40


EshaTherm TK40 is a thermo adhesive vapour pressure distribution base layer for use in partially bonded two layer systems.

EshaTherm TK40 is an SBS modified bituminised fibreglass fabric with a strip applied thermal adhesive coating.

Suitable for all types of roof with a flat or sloped roof construction on new build or refurbishment.

For all applicable roofing systems contact Radmat Building Products and see BBA certificate No. 15/5282.

For a comprehensive NBS J41 specification contract Radmat Building Products.


Torch applied to base sheet or suitable surface in accordance with the Radmat specification. Overlaps must be torched.

Description  Value
Roll Width 1.0m
Thickness 3.8mm
Roll Length 7.5m
Mass 4.2kg/m2
Side Lap 80mm
End Lap 100mm
Certification BBA 15/5282

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