28
£1,659.29
  • × This image displays the front of the product which is a Everbuild Pro Blue Masking Tape - 25mm x 33mmEverbuild Pro Blue Masking Tape - 25mm x 33mm 1 × £4.99
  • × Bond It Bitumen Paint - Black 1LBond It Bitumen Paint - Black 1L 1 × £8.99
  • × Code 3 Lead FlashingALM Code 3 Milled Lead - 210mm x 3m 1 × £25.49
  • × SikaMur InjectoCream-100 - 300mlSikaMur InjectoCream-100 - White 300ml 1 × £18.99
  • × OX Pro Jab Saw - 6.5" / 165mm & Holster PackOX Pro Jab Saw - 6.5" / 165mm & Holster Pack 2 × £16.48
  • × Bond It Anchor Bond Applicator - Blue 400mlBond It Anchor Bond Applicator - Blue 400ml 1 × £11.99
  • × Code 5 Cast Lead - 300mm x 6mCode 5 Cast Lead - 300mm x 6m 1 × £131.38
  • × Code 8 Cast Lead - 1000mm x 3mCode 8 Cast Lead - 1000mm x 3m 1 × £345.58
  • × This image displays the front of the product which is a Timco FimaHold Straight Brad Austenitic Stainless Steel Nails - 16G x 50mm (Qty 2000)Timco FirmaHold Brad Austenitic Stainless Steel Nails - 16G x 50mm (Qty 2000) 1 × £30.99
  • × Siroflex Trade High Viscosity Superglue - 50gSiroflex Trade High Viscosity Superglue - 50g 1 × £9.99
  • × This image displays the front of the product which is a Soudal Grip ALL Solvent-Free - White 290mlSoudal Grip ALL Solvent-Free - White 290ml 1 × £5.99
  • × Code 6 Lead FlashingALM Code 6 Milled Lead Flashing - 450mm x 3m 1 × £116.11
  • × This image displays the front of the product which is a Everbuild Black Jack 902 Bitumen & Flashing Primer – 5 LitreEverbuild Black Jack 902 Bitumen & Flashing Primer – 5 Litre 1 × £26.99
  • × code 4 lead flashing 390mm x 3mCode 4 Cast Lead - 180mm x 3m 1 × £31.42
  • × This image displays the front of the product which is a Everbuild Everflex 195 Siliconised Acrylic SealantEverbuild Everflex 195 Siliconised Acrylic Sealant - White 300ml 1 × £5.99
  • × Bond It Multi-Wipes Spray - Clear 1LBond It Multi-Wipes Spray - Clear 1L 1 × £7.99
  • × This image displays the front of the product which is a Gorilla Wood Glue - Brown 1LGorilla Wood Glue - Brown 1L 1 × £16.99
  • × This image displays the front of the product which is a FrogTape® Delicate Surface Masking Tape - 36mm x 41.1mFrogTape® Delicate Surface Masking Tape - Yellow 36mm x 41.1m 1 × £6.49
  • × Leather Roofers Tool & Nail Pouch, Dark BrownLeather Roofers Tool & Nail Pouch, Dark Brown 1 × £39.99
  • × This image displays the front of the product which is a EVO-STIK Tile & Grout Adhesives 3KGEvo-Stik Tile & Grout Adhesives - White 3kg 1 × £7.99
  • × Code 8 Lead FlashingALM Code 8 Milled Lead - 1200mm x 3m 1 × £410.64
  • × Timloc Mini Castellated Tile Vent Brown (Box of 14)Timloc Mini Castellated Tile Vent Brown (Box of 14) 1 × £279.86
  • × This image displays the front of the product which is a Ronseal Stays White Ultra Tough White Matt Paint - 750MLRonseal Stays White Ultra Tough White Matt Paint - 750ML 1 × £15.25
  • × This image displays the front of the product which is a Soudal Soudafoam Hand Held One Shot - 150ml (Box of 12)Soudal Soudafoam Hand Held One Shot - 150ml (Box of 12) 1 × £44.28
  • × This image displays the front of the product which is a Soudal Trade Sanitary Silicone - Clear 290mlSoudal Trade Sanitary Silicone - Clear 290ml 1 × £7.99
  • × This image displays the front of the product Bond It Dec-Mate Decorators Caulk - White EU4Bond It Dec-Mate Flexible Filler - White EU4 1 × £4.99
  • × Klober Uni Angle Ridge End Cap, BlackKlober Uni Angle Ridge End Cap, Black 1 × £8.99

Subtotal: £1,659.29

View basketCheckout

Bank Holiday Notice: Orders placed after 2:00 PM on Friday, August 23rd, will be shipped on Tuesday, August 27th.

28
£1,659.29
  • × This image displays the front of the product which is a Everbuild Pro Blue Masking Tape - 25mm x 33mmEverbuild Pro Blue Masking Tape - 25mm x 33mm 1 × £4.99
  • × Bond It Bitumen Paint - Black 1LBond It Bitumen Paint - Black 1L 1 × £8.99
  • × Code 3 Lead FlashingALM Code 3 Milled Lead - 210mm x 3m 1 × £25.49
  • × SikaMur InjectoCream-100 - 300mlSikaMur InjectoCream-100 - White 300ml 1 × £18.99
  • × OX Pro Jab Saw - 6.5" / 165mm & Holster PackOX Pro Jab Saw - 6.5" / 165mm & Holster Pack 2 × £16.48
  • × Bond It Anchor Bond Applicator - Blue 400mlBond It Anchor Bond Applicator - Blue 400ml 1 × £11.99
  • × Code 5 Cast Lead - 300mm x 6mCode 5 Cast Lead - 300mm x 6m 1 × £131.38
  • × Code 8 Cast Lead - 1000mm x 3mCode 8 Cast Lead - 1000mm x 3m 1 × £345.58
  • × This image displays the front of the product which is a Timco FimaHold Straight Brad Austenitic Stainless Steel Nails - 16G x 50mm (Qty 2000)Timco FirmaHold Brad Austenitic Stainless Steel Nails - 16G x 50mm (Qty 2000) 1 × £30.99
  • × Siroflex Trade High Viscosity Superglue - 50gSiroflex Trade High Viscosity Superglue - 50g 1 × £9.99
  • × This image displays the front of the product which is a Soudal Grip ALL Solvent-Free - White 290mlSoudal Grip ALL Solvent-Free - White 290ml 1 × £5.99
  • × Code 6 Lead FlashingALM Code 6 Milled Lead Flashing - 450mm x 3m 1 × £116.11
  • × This image displays the front of the product which is a Everbuild Black Jack 902 Bitumen & Flashing Primer – 5 LitreEverbuild Black Jack 902 Bitumen & Flashing Primer – 5 Litre 1 × £26.99
  • × code 4 lead flashing 390mm x 3mCode 4 Cast Lead - 180mm x 3m 1 × £31.42
  • × This image displays the front of the product which is a Everbuild Everflex 195 Siliconised Acrylic SealantEverbuild Everflex 195 Siliconised Acrylic Sealant - White 300ml 1 × £5.99
  • × Bond It Multi-Wipes Spray - Clear 1LBond It Multi-Wipes Spray - Clear 1L 1 × £7.99
  • × This image displays the front of the product which is a Gorilla Wood Glue - Brown 1LGorilla Wood Glue - Brown 1L 1 × £16.99
  • × This image displays the front of the product which is a FrogTape® Delicate Surface Masking Tape - 36mm x 41.1mFrogTape® Delicate Surface Masking Tape - Yellow 36mm x 41.1m 1 × £6.49
  • × Leather Roofers Tool & Nail Pouch, Dark BrownLeather Roofers Tool & Nail Pouch, Dark Brown 1 × £39.99
  • × This image displays the front of the product which is a EVO-STIK Tile & Grout Adhesives 3KGEvo-Stik Tile & Grout Adhesives - White 3kg 1 × £7.99
  • × Code 8 Lead FlashingALM Code 8 Milled Lead - 1200mm x 3m 1 × £410.64
  • × Timloc Mini Castellated Tile Vent Brown (Box of 14)Timloc Mini Castellated Tile Vent Brown (Box of 14) 1 × £279.86
  • × This image displays the front of the product which is a Ronseal Stays White Ultra Tough White Matt Paint - 750MLRonseal Stays White Ultra Tough White Matt Paint - 750ML 1 × £15.25
  • × This image displays the front of the product which is a Soudal Soudafoam Hand Held One Shot - 150ml (Box of 12)Soudal Soudafoam Hand Held One Shot - 150ml (Box of 12) 1 × £44.28
  • × This image displays the front of the product which is a Soudal Trade Sanitary Silicone - Clear 290mlSoudal Trade Sanitary Silicone - Clear 290ml 1 × £7.99
  • × This image displays the front of the product Bond It Dec-Mate Decorators Caulk - White EU4Bond It Dec-Mate Flexible Filler - White EU4 1 × £4.99
  • × Klober Uni Angle Ridge End Cap, BlackKlober Uni Angle Ridge End Cap, Black 1 × £8.99

Subtotal: £1,659.29

View basketCheckout

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Delivery over £10*

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
-
+
£32.99 Incl VAT £27.49 Excl VAT
Easy-Trim Eaves Comb Filler, 1m
-
+
£1.29 Incl VAT £1.08 Excl VAT
This image displays the front of the product which is a Easy-Trim Over Fascia Vent
-
+
£8.99 Incl VAT £7.49 Excl VAT
Quantity Price
1 - 19 £64.99
20+ £58.00
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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