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Kingspan Nilvent Breather Felt Vapour Control Layer - 50m x 1.5m Roll

Additional Information

Product code: NILVENT
Brand: Kingspan
Estimated delivery: 1-2 Days
£104.70 inc vat
£87.25 ex vat
  • 1+ £104.70
    inc vat
    ex vat
  • 5 + £96.00 inc vat £80.00 ex vat
  • 10 + £93.00 inc vat £77.50 ex vat
  • 24 + £87.00 inc vat £72.50 ex vat
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Breathable membrane for unventilated pitched roofs and timber frame walls.

Please note this products is completely waterproof and as such can be used as a temporary roof covering.

Air permeability

Kingspan nilvent is airtight, when tested at normal building pressures, i.e. 50 Pa pressure difference.


Length: 50m.
Width: 1.5m.
Roll size: 75m2.
Thickness: 0.6mm.
Weight: 12kg.
Certification: BBA certified.
Rafter pitch:

  • 12.5° – 14°:  150mm minimum lap.
  • 15° – 34°: 100mm minimum lap.
  • 35° or above: 75mm minimum lap.


Timber frame walls: Kingspan Nilvent can be fixed to a timber frame wall either horizontally or vertically.

Slating & tiling: Slating and tiling over Kingspan Nilvent is exactly the same as on any other pitched roof except that, in some instances, the slate / tile battens (if required) are fixed to the previously applied counter–battens.

Rooflights: please refer to the instructions provided by the rooflight manufacturer. In the absence of manufacturer’s information, cut and fit Kingspan nilvent neatly around the rooflight kerb, with an upstand of 50mm.


Kingspan nilvent comprises a laminated, 3–layer polyolefin construction. The top layer provides protection from UV and mechanical damage. The middle layer is the functional layer. The bottom layer provides abrasion resistance. Kingspan nilvent has a light grey upper surface, printed with the Kingspan nilvent logo, and a dark grey lower surface.

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All delivery charges are included in the final shopping basket and are dependent on the products Scottish Highlands & the Islands where additional shipping charges will apply.

Please note that not all products will incur an additional delivery charge to the Scottish Highlands & the Islands – this is based on the costs from the manufacturer, distributor or courier providing shipping on our behalf. If your delivery address is in the Scottish Highlandsand Islands, a member of our helpline team will contact you prior to processing your ordershould an additional delivery charge apply.

While we make every effort to ensure orders are delivered by the date required, we cannot guarantee availability from the manufacturer or the manufacturer's delivery schedules.

Any variation to web delivery date given will be advised to you by email or telephone. If we are unable to make delivery because access is not possible, we reserve the right to make a failed delivery charge.

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Kingspan Nilvent Breather Felt Vapour Control Layer - 50m x 1.5m Roll

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Kingspan Nilvent Breather Felt Vapour Control Layer - 50m x 1.5m Roll

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