Vent 3

Cromar Vent 3 Breathable Membrane Various Lengths

Cromar Vent 3® Breathable Membrane

A breathable roof underlay that gives major benefits over traditional underlays.

Cromar Vent 3® Classic breather felt is made from two high-tensile spun bonded polypropylene layers. This triple layer high performance breathable membrane is thermally calendared to a micro porous polypropylene film.

Exactly the same specifications as the Vent 3 Light breathable membrane but the Classic has a heavier GSM at 115, compared to the Light’s 95 GSM.

  • Three layer membrane
  • Clean and easy to use
  • Lightweight and flexible
  • Waterproof membrane
  • Long term durability
  • Warm and cold roof application


Designed for use in a fully supported or unsupported tiled, slated or metal roof system.

Available in 50m2 and 75m2

Slight Factory Seconds
British Made

  • 50m2 roll only £11.00 + VAT
  • 75m2 roll only £15.00 + VAT
Cromar Vent 3 Breathable Membrane
Cromar Vent 3 Breathable Membrane