Langley TS-15 Built-Up-Roofing System (Single Layer, Torch Applied Installation)
The TS-15 system, part of the Langley Parafor range, comprises of a singley layer overlay of Thermosolo GS cap sheet which is a premium quality, torch applied, semi-adhered, single layer high performance SBS elastomeric membrane for the refurbishment of existing flat roofs*. Thermosolo GS membrane has dark grey granule surface and is adhered by heat activation (torching) of thermofusable bitumen strips. This system carries and independently insured guarantee for 15 years for both materials and workmanship.

When to Specify

This system is for refurbishment projects; suitable for overlaying mastic asphalt and BUR felt.

(1) Thermosolo GS Cap Sheet, 5mm thick (4mm at selvedge), 6.46kg/m².
(2) Existing Roof / Waterproofing System.
*Subject to suitability and preparation of substrate.
Contact Langley Technical Department for further guidance.


Robust, yet flexible roof covering, 5mm thick, with non-slip slate granule surface provides ample durability and puncture resistance for maintenance foot traffic. Heavy duty 180 g/m² non-woven polyester composite reinforcement provides robust watertight layer.

felting workResistance

Thermosolo GS is covered by MOAT 31 (Reinforced Homogenous coverings of Elastomeric Bitumen). Thermosolo GS achieves a 'resistance to damage' rating of R4 (the highest level of acceptance) under MOAT 31.


Long term solution, life expectancy in excess of 30 years.


Proven Technology: original SBS elastomeric bitumen membrane system. Rapid installation, laps secured by torching.