Novecrafto Breathable Roofing Membrane - 1m x 50m - 120 GSM

This breathable roofing membrane provides reliable protection for pitched roofs, sheds and garages...

Best current price£58.95from B&Q

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B&QB&Q - Breathable Roofing Membrane1M X 50M (50M²)120 Gsm3-Layer Vapor Permeable Roofing Felt UnderlayBba & Ce Approved
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DebenhamsNovecrafto Unisex Grey Breathable Roofing Membrane X 50M 120 Gsm Waterproof Roof Underlay In 1M
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OnBuy.comBreathable Roofing Membrane, 1M X 50M (50Mâ²) - 120 Gsm, 3-Layer Vapor Permeable Roofing Felt Underlay, Bba & Ce Approved 5061064158156
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The RangeNovecrafto Breathable Roofing Membrane 1M X 50M 120 Gsm 3-Layer Waterproof Roof Underlay - Grey
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Product Information

Full details

The Novecrafto Breathable Roofing Membrane is an essential solution for professional builders and DIY enthusiasts working on pitched roofs, sheds, or garages who require a reliable moisture barrier. Its primary benefit is the combination of high-performance water protection with superior breathability, which effectively prevents condensation buildup within the roof structure. While it offers excellent durability for new builds and renovation projects, users must ensure it is installed with the correct side facing outward to maintain its vapor-permeable functionality.

All features

Model Part Number5061064158156
BrandNovecrafto

Extended Product Information

FAQs

Can I use this membrane for a flat roof?

No, this product is specifically designed for pitched roofs. It relies on gravity to shed water effectively and is not intended for standing water conditions found on flat roofs.

Does this membrane provide insulation?

No, this is a breathable underlay intended for moisture management. It should be used in conjunction with appropriate roof insulation materials.

How much overlap should I use?

You should maintain an overlap of at least 150mm between rolls to ensure a continuous water-resistant barrier.

Is it UV resistant?

While it can withstand temporary exposure during construction, it should be covered by the final roof tiles or slates as soon as possible to prevent long-term UV degradation.

Can this be used on a garage?

Yes, it is highly suitable for garages and sheds, provided they feature a pitched roof design.

Troubleshooting

Moisture buildup underneath the membrane

Verify that the membrane was installed with the correct side facing outward and ensure adequate ventilation is present at the eaves and ridge.

Tearing during installation

Ensure the rafters are free of sharp nails or splintered wood debris before rolling out the membrane; use tape designed for roofing membranes to patch minor punctures.

Pros and Cons

Pros

  • Prevents condensation and mold growth
  • Lightweight design simplifies manual handling
  • Acts as an effective barrier against wind and water
  • Suitable for both new construction and refurbishment
  • High-durability 3-layer material construction

Cons

  • Requires careful orientation during installation
  • Limited to pitched roof applications
  • Surface must be clean and debris-free for best adhesion

Setup, Compatibility & Care

Installation requires basic hand tools, including a heavy-duty staple gun, a sharp utility knife for trimming, and roofing nails. Ensure your rafters are structurally sound before beginning.

  1. Ensure the membrane is installed with the technical face (usually the brighter or labeled side) facing outward toward the roof tiles.
  2. Start at the lowest point of the roof (the eaves) and roll the material horizontally.
  3. Maintain a minimum overlap of 150mm between adjacent horizontal runs to ensure water-shedding efficiency.
  4. Secure the material to the rafters using corrosion-resistant staples or battens.
  5. Keep the roll stored in a dry, cool environment away from direct UV sunlight exposure when not in use, as prolonged UV degradation can compromise the integrity of the material.

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