A homogenous roofing membrane with a fibreglass reinforced bottom surface. It has been specifically developed for increased fire protection and is a simple and effective way to achieve greater fire protection without the use of separate components. Tectofin GV is suitable for new build and refurbishment projects and can be applied to the roof by all fixing methods (mechanically fixed with screws, bonded with adhesive or retained with ballast and green roof options). It is CE marked and is available in light grey and titan (dark) grey.


  • Anti-microbial action.
  • Backed with a polyester fabric.
  • Bitumen-resistant.
  • Extremely tear proof.
  • Fire performance to BS EN 13501-5 of Broof (t1).
  • Highly stable/ flexible at low temperatures.
  • Ozone and UV resistant.
  • Recyclable.
  • Resistant to penetration by plant roots.
  • Suited for solvent and hot air welding.

General information


Anti-microbial action

Backed with a polyester fabric


Extremely tear proof

Fire performance to BS EN 13501-5 of Broof (t1)

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Based on acrylic synthetic rubber

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



Light grey

Titan grey

Standard product features


Based on acrylic synthetic rubber.


  • 1.5 mm.

Technical properties:

  • Dimensional stability (to BS EN 1107-2): ≤ 1.0%.
  • Elongation (to BS EN 12311-2): ≥ 10%.
  • Foldability at low temperature (to BS EN 495-5): ≤ -20°C.
  • Impact resistance (to BS EN 12691): ≥ 500 N (2.2 mm thick), ≥ 600 N (2.5 mm thick).
  • Joint sheer resistance (to BS EN 12317-2): ≥ 500 N/50 mm.
  • Nail tear strength (to BS EN 12310-1): ≥ 500 N.
  • Peel strength overlap (to BS EN 12316-2): ≥ 250 N/50 mm.
  • Reaction to fire (to BS EN 13501-1): Class E.
  • Resistance to static loading (to BS EN 12730): ≥ 20 kg.
  • Tear resistance (to BS EN 12310-2): ≥ 250 N.
  • Tensile strength (to BS EN 12311-2): ≥ 600 N/50 mm.
  • Water vapour diffusion value (to BS EN 1931): 20 000 µ (± 30%).

Product Options

Roll width:

1100 mm or 1620 mm.

Roll length:

Available in lengths of 15 m.

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