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Novia Black Roof & Wall Breather Membrane DIY Kit - 50m x 1.5m

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£142.98 Incl. VAT
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Novia Black is a high quality, versatile, low cost, breather membrane for all pitched cold and warm roofs, and insulated wall applications. The material meets EN 13859-1 for pitched roofing and EN13859-2 for walls. Novia Black has excellent water resistance but still provides high breathability; it is strong yet lightweight and also complies with EN 13501-1 fire classification grade E. The product is completely black on one side, white on the reverse, with no text or images on either side, except a 150mm overlap line.

The DIY Kit has been developed not only to help you and not only in terms of convenience but also to ensure you are ordering the correct number and correct types of tapes with your breather membrane.This kit consists of the following items:

1 x Novia Black 115GSM.
1 x Novia double sided lap tape.
2 x Novia Breather Membrane Lap Tape.


  • Highly waterproof.
  • Highly vapour permeable.
  • Single product for all roofs and walls.
  • 3-layer laminate with microporous core.
  • Excellent tensile and nail tear strength.
  • Matt finish slip-resistant surface.
  • Grade E (Fire) and 3 months UV resistant.
  • CE compliant to EN 13859-1 (roofs) and EN13859-2 (walls).
  • Tested for BS 5534 wind uplift requirements.
  • Recyclable and ecologically harmless


For walls: Fix the Novia Black membrane to the wall structure; ensure upper layers overlap lower layers. Work from the bottom moving upwards and ensuring there are minimum overlaps of 100mm on the horizontal joints. Do not begin a vertical lap joint within 300mm of a corner, and vertical laps should be at least 150mm. Ensure the bottom timber is also protected by an overlap. Fix at suitable intervals with galvanised nails, stainless staples or similar fixings that will be permanent. Do not leave the membrane unnecessarily exposed to weathering, high winds, excessive UV etc. as this may cause damage over time. If you must leave the membrane exposed for extended periods of time, consider the use of suitable temporary protection materials.

For roofs: Novia Black can be installed within all standard roof applications. On insulated warm roofs, the membrane may be placed directly onto the insulation or boarded roof if required. Novia Black can also be used in conventional cold roof applications. Fix the membrane to the roof structure and ensure upper layers overlap lower layers. Work from the bottom moving upwards and ensure there are minimum overlaps used as shown within BS 5534:2014. The membrane should be overlapped 200 mm on each side of the ridge. All vertical overlaps must be situated on a rafter and must be sealed. Fix at suitable intervals with galvanised nails, stainless staples or similar approved fixings that will be permanent. At any entry points for services (soil pipes, vents etc), ensure that Novia Black is properly sealed. Where pipes etc. penetrate the underlay, cut neatly and accurately and turn edges up to give a tight water-resistant fit, and seal with Novia tapes.


Permeability Vapour Permeable

Questions & Answers


Does it have certification?


Yes, Novia breather membranes conform to BE EN 13859-1 and -2 which cover roof and wall applications *Excluding Novia 4016


Where is a breather membrane used?


Breather membranes can be used on roof and wall applications for external applications behind the external façade/roof covering.


Are they airtight?


Yes, Novia breather membranes are airtight which ensures the warmth of the building is retained.


Are they fully waterproof?


Yes, all Novia breather membranes are fully waterproof to W1 standard (the highest possible standard) *Excluding Novia 4016.

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