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Cromar Breathable Felts

Cromar Breathable Felts

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Cromar Breathable Felts

Cromar Vent 3 Classic, Vent 3 and Vent 3 Pro are triple layered fabric, high performance breathable membranes.


  • Special SPAX CUT point: precision placement, allows screwing in without pre-drilling (wood-dependent), effectively reduces splitting and bulging of the material
  • Small 75° milling head: ensures flush countersinking
  • Partial thread: firm tightening of the upper wood layer


  • Designed for use in a fully supported or unsupported tiled, slated or metal roof system.
  • Equally suitable whether draped unsupported over rafters or laid directly over insulation.
  • Cold & warm roof application.


  • 3 layer spun-bonded membrane.
  • British Board of Agrément (BBA) certification.
  • Clean and easy to use.
  • Excellent nail tear resistance.
  • UV stable for up to 3 months.
  • High vapour permeability.
  • Excellent tensile/tear strength.
  • High wind uplift resistance.
  • No gusting wind noise.



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