Cromar Vent 3 Breather Membranes – Stocked by North West Roofing Supplies

Trusted, BBA-Certified Roofing Membranes for Breathability, Durability & Compliance

At North West Roofing Supplies, we proudly stock the Cromar Vent 3 range – one of the UK’s most trusted breather membrane solutions for pitched roofing. Designed and manufactured by Cromar Building Products, the Vent 3 range offers long-lasting performance, protection from the elements, and total peace of mind for both new builds and refurbishments.

Explore the Cromar Vent 3 Membrane Range

Cromar Vent 3 Classic
The reliable all-rounder for pitched roof projects

– Triple-layer vapour-permeable membrane
– Provides excellent protection against wind-driven rain and condensation
– Suitable for warm and cold roofs
– Lightweight and easy to install
– UV resistant for up to 3 months before covering
– Certified to BS 5534 for wind uplift resistance

Roll sizes: 1.0m x 50m & 1.5m x 50m
Ideal for: General roofing, housing extensions, and refurbishments

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Cromar Vent 3 Pro
Enhanced strength and durability for exposed sites

– Reinforced 3-layer membrane with superior tear resistance
– Designed for areas with high wind uplift or complex roof structures
– Offers increased longevity and resilience during and after installation
– Vapour-permeable, water-resistant, and UV stable
– Helps reduce condensation risk in both warm and cold roof systems
– Fully BBA certified and BS 5534 compliant

Roll size: 1.5m x 50m
Ideal for: Coastal sites, exposed locations, and premium builds

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 Cromar Vent 3 Air
High-performance, air-open membrane for advanced roof ventilation

– Air-permeable + vapour-permeable membrane – no additional ventilation needed
– Ideal for use in unventilated cold roofs
– Reduces risk of interstitial condensation without eaves or ridge vents
– Offers excellent airflow and breathability
– High tensile strength and resistance to water ingress
– BBA certified for use in all standard pitched roof systems

Roll size: 1.5m x 50m
Ideal for: Cold roof construction with limited ventilation options, modern housing design

Why Choose Cromar Vent 3 Membranes?

✔️ BBA certified & BS 5534 compliant
✔️ Manufactured in the UK – built for the British climate
✔️ Vapour-permeable to reduce condensation in roof spaces
✔️ Available for warm roof, cold roof, and unventilated systems
✔️ Lightweight, flexible, and easy to fit
✔️ Suitable under all common slate and tile coverings

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Why Buy Cromar from North West Roofing Supplies?

– ✅ Vent 3 Classic, Pro, and Air always in stock
– ✅ Competitive trade prices and quantity discounts
– ✅ Collection from North West branches or nationwide delivery
– ✅ Expert support to help you choose the right membrane
– ✅ We also stock battens, slates, tiles, fixings, insulation, and ventilation

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📞 Order Your Cromar Vent 3 Membrane Today

Not sure whether Vent 3 Classic, Pro, or Air is right for your roof build-up?

👉 Call us now, visit your local North West Roofing Supplies branch, or request a Quick Quote online.
We’ll help you get the right membrane at the right price, fast.

– Cromar Vent 3 Classic membrane
– Cromar Vent 3 Pro breather membrane
– Cromar Vent 3 Air air-open membrane
– Breathable roof membrane UK
– Cromar roofing felt supplier
– BBA certified roofing underlay
– BS 5534 breather membrane
– Cromar stockist North West
– Buy Cromar Vent 3 online