Cosmofin G

Roofing membrane incorporating glass reinforcement encapsulated between two layers of extruded PVC. The membrane is manufactured with a fungicidal additive and is specifically designed for use within ballasted or green roof constructions where the membrane is buried. Cosmofin G is resistant to micro-organism attack and can provide a long lasting waterproof solution for roof areas that need to be waterproofed fast. Conforms to BS EN 13956, CE marked.

General information



Uniclass 2015

Pr_25_57_51_66 Polymeric membranesPrimary


J42/10 Warm deck roof covering

J42/400 Waterproof membrane

Specification data - Polymeric membranes Enhanced data

Product Reference

Cosmofin G



Light grey

Standard product features




1.5 mm.

Roll size:

2.12 m x 15 m.

Technical properties:

  • Dimensional stability (to BS EN 1107-2): ≤ 0.1 %.
  • Elongation (to BS EN 12311-2 (B)): 100%.
  • Foldability at low temperature (to BS EN 495-5): ≤ -30°C.
  • Peel strength overlap (to BS EN 12316-2) ≥ 100 N/50 mm.
  • Reaction to fire (to BS EN 13501-1): Class E.
  • Resistance to impact (to BS EN 12691 (A/B)) ≥ 500 mm.
  • Resistance to root penetration (to pr BS EN 13948): Pass.
  • Resistance to static loading (to BS EN 12730) ≥ 20 kg.
  • Tensile strength (to BS EN 12311-2 (B)): ≥ 8 N/mm².
  • Water vapour diffusion value (to BS EN 1931): 10 000 µ (± 30%).
  • Water tightness (to BS EN 1928(B)) Pass.

Product Options


Other colours are available to special order, contact manufacturer for more information.

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