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EshaFlex TK40 is a thermo adhesive vapour pressure distribution base layer for use in partially bonded two layer systems. EshaFlex TK40 is an SBS modified bituminized 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. EshaFlex TK40 is a torch-on roll.

For all applicable roofing systems see Esha System Information Sheets and KOMO certificate.


KOMO certificates: K66713 and K66714, NL-BSB: K66717, CE-0620.

General information
Specification data - Reinforced bitumen roofing sheets
Product Reference

EshaFlex TK40

Standard product features

Product characteristics:

  • Appearance top side: Macro perforated film finished with sand.
  • Coating top side: SBS modified bitumen.
  • Reinforcement: Glass fabric.
  • Coating bottom side: SBS modified bitumen, plus partially applied thermal adhesive coating.
  • Appearance bottom side: PE film.


1 m.

Product Options

Technical data:

  • Mass per unit area: 4.2 kg/m² (± 10%).
  • Effective thickness: 3.2 mm (± 0.2 mm).
  • Reaction to fire: Pass, Class F.
  • Watertightness: Pass, ≥ 10 kPa.

Third party certifications
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