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Cromar Vent 3 Classic Breathable Membrane - 1.5m x 50m

Home Shop Roofing Felt Breather Membranes Cromar Vent 3 Classic Breathable Membrane – 1.5m x 50m
Product SKU: FTCROVENT3CLASSIC1.5
£64.99incl VAT.
£54.16excl VAT.
In Stock

The Cromar Vent 3 Classic Breathable Membrane – 1.5m x 50m 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.

  • 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
-
+
£28.99 Incl VAT £24.16 Excl VAT
-
+
£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
Total Price
£64.99 Incl VAT
£54.16 Excl VAT

The Cromar Vent 3 Classic Breathable Membrane - 1.5m x 50m 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 While Allowing Water Vapour to Pass Through?

The outer layer functions as a fully effective waterproof barrier, preventing water penetration. The middle layer, made from a high-quality breathable membrane, allows water vapour inside the roof space to escape, ensuring proper ventilation. The inner layer adds protection against abrasion and damage, enhancing the membrane's overall durability and integrity.

Application Notes

Install this product in accordance with BS 5534:2018 and Cromar's fixing instructions. The Vent 3 Classic Breathable Membrane serves as a secondary barrier against wind-driven rain and snow. Rather than a primary layer. While it resists UV exposure for up to three months. Best practice recommends completing the installation of the first layer as soon as possible to ensure long-term protection.

Click here to open Cromar's installation instructions.

Additional information

Brand

Length

Width

Product Type

Roofing Felt

Water Vapour Resistance (Sd ) (m)

0.02

Resistance to water penetration

Class W1

Resistance to streaming water

Pass

Reaction to Fire

Class E

Hydrostatic Head

310cm

Nail Tear

MD 92N – TD 126N

Elongation

MD 63% – TD 70%

Tensile Strength

MD 176N/50mm – TD 109N/50mm

Technical Data Sheet

Safety Data Sheet

Product Information

Brand

Length

Width

Product Type

Roofing Felt

Water Vapour Resistance (Sd ) (m)

0.02

Resistance to water penetration

Class W1

Resistance to streaming water

Pass

Reaction to Fire

Class E

Hydrostatic Head

310cm

Nail Tear

MD 92N – TD 126N

Elongation

MD 63% – TD 70%

Tensile Strength

MD 176N/50mm – TD 109N/50mm

Technical Data Sheet

Safety Data Sheet

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