The high-performing Glidevale Protect BarriAir is a coated non-woven membrane that serves as an efficient air leakage barrier. With vapour control qualities, this multi-purpose option includes integrated lap and sealing tapes, making it a versatile solution. The material is ye... Read More
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The high-performing Glidevale Protect BarriAir is a coated non-woven membrane that serves as an efficient air leakage barrier. With vapour control qualities, this multi-purpose option includes integrated lap and sealing tapes, making it a versatile solution.
The material is yellow and semi-translucent, with a printed grid that facilitates easy alignment with timber studs or joists. Integrated tapes are situated on the membrane's outer edges, following a dotted overlap line, on alternating sides on the upper and lower surface. This allows a jointed and sealed overlap by applying two layers of adhesive to each other. As a result, a more effective seal than a traditional overlap tape is provided, even when lacking an underlying substrate.
Additionally, the adhesive used in the double-layered strips acts as a sealant, reducing air leakage caused by mechanical fixings.
Question:
Can this be retro fitted over PIR board (between joists) that will be on a ground floor timber suspended?
Answer:
Provided it is fitted on the warm side of the insulation (innermost side) - I can see no issue as to why you could not do this.
Question:
Can this product be used under slates?
Answer:
This is a high perfomance vapour barrier designed to be used on the warm side of the roof, you'd be best looking at a breather membrane like the following which is designed to be used as the outermost layer before tiles or slates - https://www.insulationsuperstore.co.uk/product/protect-tf200-thermo-insulating-breather-membrane-15m-x-50m-roll.html
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