Verified by manufacturer 1 month ago
Vent3®
BBA Agrément Certificate
Certificate type
A BBA certified range of high performance breathable roof underlays for cold and warm roof applications.
Application:
Suitable for cold and warm roof applications. Also suitable for wall application behind closed facades and rainscreens.
Quality:
Wind Zone Suitability:
The wind uplift resistance figures for Vent3 breather membrane applies in the geographical wind zones stated on the datasheet, where a well-sealed ceiling is present and the roof has a ridge height of ≤15 m, a pitch between 15° and 75°, and a site altitude of ≤100 m, and where the topography is not significant.
The required uplift resistance for other roofing projects should be determined using BS 5534:2014+A2:2018 and the declared wind-up lift resistance which can be made available through our technical department.
A BBA certified range of triple layer fabric, high performance breather membranes, made from high tensile spun bonded polypropylene layers, around a micro-porous polypropylene film. The membrane is produced with the option of an integral acrylic tape. Designed for use in a fully supported or unsupported tiled, slated or metal roof system.
The high vapour permeability and waterproof nature of the membrane, combined with excellent tensile/tear strength and high wind uplift resistance makes the Vent3 range the professional’s choice as the ultimate breather membrane. It is equally suitable whether draped unsupported over rafters or laid directly over insulation.
The outer layer forms the functional waterproof surface, the middle layer is the breathable waterproof membrane, and the inner layer protects the membrane from abrasion and damage, also giving additional strength. This enables the fabric to allow moisture vapour to pass through, whilst remaining fully waterproof. The upper surface is coloured, printed with the trade name and head lap lines. Available in 1/ 1.5 m width as standard to conform easily to any typical roof configuration or the individual working practices of the installer.
Features and benefits:
The range includes:
Consult the technical literature for lap size details and zone (BS 5534) applications.
Color | Blue Green Grey Other |
Finish | Textured |
Material | Polypropylene |
Shape | Rectangle |
Length | 15000 mm 25000 mm 45000 mm 50000 mm |
Width | 1000 mm 1500 mm |
Height | Bespoke |
Warranty description | Other |
Uniclass | |
CAWS | P10/320 Breather membrane H67/24 Vapour-permeable underlay H64/22 Vapour-permeable underlay H65/22 Vapour permeable underlay H61/22 Vapour-permeable underlay H60/22 Vapour-permeable underlay H91/305 Vapour-permeable underlay H67/290 Vapour-permeable underlay H64/307 Vapour-permeable underlay H65/235 Vapour-permeable underlay H62/235 Vapour-permeable underlay H61/235 Vapour-permeable underlay H60/235 Vapour-permeable underlay |
Material | Polypropylene. |
Purpose | Breather membrane. |
Standard | To BS EN 13859-1. |
Third-party certification | British Board of Agrément (BBA) certificate. |
Performance characteristics | |
Tensile strength (minimum) | MD 285 N/50 mm, TD 200 N/50 mm. |
Tear resistance | MD 171 N, TD 227 N. |
Elongation to break | MD 47%, TD 79%. |
Water vapour resistance (minimum) | <0.02 MNs/g. |
Fire performance | To EN 13501-1: Class E. |
UV stabilization | 3 months. |
Physical properties | |
Colour | Dark blue/ white. |
Weight (minimum) | 135 g/m². |
Dimensions | |
Width (minimum) | 1 m.1.5 m.Guidance for specification option: 1.5 x 50 m only. |
Roll length (minimum) | 15 m.25 m.45 m.50 m. |
Water vapour transmission | To EN 12572: < 0.02 MNs/G. |
Resistance to water penetration | To EN 13859‐1: Class W1. |
Roll weight | 7.75–10 kg. |
Contains Red List materials | No |
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
NBS BIM Object Standard
This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.
Find out more about the NBS BIM Object Standard.
Platform | Compatible | Version |
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- | 1 | |
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