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Cromar Vent 3 Classic Breathable Membrane - 1m x 50m

Home Shop Roofing Felt Breather Membranes Cromar Vent 3 Classic Breathable Membrane – 1m x 50m
Product SKU: Ftcrovent3classic
£38.99incl VAT.
£32.49excl VAT.
In Stock

Cromar Vent 3 Classic Breathable Membrane is a high-quality, triple-layer fabric that’s crafted from high tensile spun bonded polypropylene layers around a micro-porous polypropylene film, providing exceptional waterproofing whilst allowing water vapour to escape the roof’s space.

  • GSM 115
  • Triple-layer membrane that’s easy to use
  • Flexible and lightweight
  • Fantastic tensile and tear strength
  • Durable and long-lasting
  • Suitable for cold and warm applications
  • Waterproof membrane, redirecting rainfall into gutters
Frequently Bought Together:
ERidge Dry Fix Ridge System Black – 6m Kit
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+
£28.99 Incl VAT £24.16 Excl VAT
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+
£1.29 Incl VAT £1.08 Excl VAT
This image displays the front of the product which is a Easy-Trim Over Fascia Vent
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£8.99 Incl VAT £7.49 Excl VAT
Quantity Price
1 - 11 £38.99
12+ £33.00
Total Price
£38.99 Incl VAT
£32.49 Excl VAT

The Vent 3 Classic Breathable Membrane by Cromar is an outstanding secondary layer protection for your roof. This breathable membrane is fitted behind the first layer of defence, preventing any water that passes through from entering your roofing space, instead being redirected into the gutter. Cromar crafted this product for application in a fully supported or unsupported tiled, slated, or metal roof system. This product stands out from the rest because of its high vapour permeability and waterproofing resistance of the membrane, combined with superior tensile and tear strength and wind resistance.

How does this product resist water but allow water vapour through?

The outer layer of this product is crafted as a fully functional and exceptional waterproofer, whilst the middle layer is a high-quality, breathable waterproof membrane, allowing water vapour inside the roof space to escape. The final inside layer protects the membrane from abrasion and damage and enhances the overall integrity of the membrane.

Application Notes

This product should be fitted in accordance with BS 5534:2018 and Cromar's fixing instructions. The Vent 3 Classic Breathable Membrane should not be treated as a primary layer. Instead, it's the secondary barrier to wind-driven snow and rain. Although it's resistant to UV exposure, this is only for three months, and therefore, good practice suggests that installation of the first layer should be completed as soon as possible.

Click here to open Cromar's installation instructions.

Additional information

Brand

Length

Width

Product Type

Roofing Felt

GSM

115

Tensile Strength

MD 176N/50mm – TD 109N/50mm

Elongation

MD 63% – TD 70%

Nail Tear

MD 92N – TD 126N

Hydrostatic Head

310cm

Reaction to Fire

Class E

Resistance to streaming water

Pass

Resistance to water penetration

Class W1

Water Vapour Resistance

0.02

Technical Data Sheet

Safety Data Sheet

Product Information

Brand

Length

Width

Product Type

Roofing Felt

GSM

115

Tensile Strength

MD 176N/50mm – TD 109N/50mm

Elongation

MD 63% – TD 70%

Nail Tear

MD 92N – TD 126N

Hydrostatic Head

310cm

Reaction to Fire

Class E

Resistance to streaming water

Pass

Resistance to water penetration

Class W1

Water Vapour Resistance

0.02

Technical Data Sheet

Safety Data Sheet

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