Buy Proctor Air ® vapour-permeable membranes and airtightness accessories for pitched roofs, walls and façade build-ups — UK delivery or collection.
Completing a roof? Add roofing nails, battens, and slates to one basket to reduce delivery costs.
Proctor Air ® is a high-performance, vapour-permeable membrane designed to balance weathertightness, airtightness and breathability. It helps manage moisture risk by allowing water vapour to escape while resisting wind-driven rain — supporting insulation performance and long-term durability.
Best for: pitched roofs beneath slates/tiles, timber-frame walls behind cladding, and refurbishment projects where controlled moisture movement matters.
Trade-friendly: order membrane, tapes and accessories together for consistent detailing — or call us with your build-up and we’ll help you specify.
Call Us Get a trade quote
Proctor Air ® is used to improve performance of the building envelope by controlling air leakage and helping moisture escape safely.
Complete the roof build-up: add battens, roofing nails, and roof slates.
Ideal under new and reclaimed slates.
Reliable under tile systems.
Compare alternatives and accessories.
These FAQs help you choose the right Proctor Air ® membrane and detail it properly for reliable airtightness and moisture control.
Proctor Air ® is used in roofs and walls as part of the building envelope to manage wind, rain and moisture vapour. It helps protect insulation and improves energy performance when installed and taped correctly.
Yes. It’s commonly used beneath roof slates and tiles as a secondary layer of defence against wind-driven rain, while still allowing controlled vapour escape.
Yes—airtightness depends on the full system: tapes for laps and penetrations, primers on dusty substrates, and sealing details at eaves, ridges, valleys and abutments. Browse roofing supplies for accessories.
An air barrier limits air movement; a VCL limits vapour diffusion. Some build-ups need both. Follow the design/spec and product guidance for correct positioning in the assembly.
Commercial intent: if you’re ordering for a job, add membrane + fixings together so everything arrives in one drop.
Typical add-ons: roof battens, roofing nails, and your roof covering — reclaimed slates or Welsh slates.
Yes—UK-wide delivery is available. If you need multiple rolls, trade quantities or a consistent spec across sites, contact us for volume pricing and lead times.
Yes—send your roof/wall build-up, pitch (for roofs), covering type and exposure. We’ll point you to the right Proctor Air ® option and accessories.
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We supply membranes, fixings, battens and roof coverings for trade and public customers. If you’re unsure what you need, we’ll help you select a sensible, compliant package for your job.
Contact us Call: 01904 289 846
Sutton Road, Wigginton, York
North Yorkshire, YO32 2RB, United Kingdom
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