Proctor Air ® Roof felt
£120.00 + Vat
144 in stock (can be backordered)
- National Pallet Delivery
- In store click & collect
- Quality reclaimed products
Product Info
Proctor Air® Roof Felt – Vapour-Permeable Roofing Underlay
Proctor Air® roof felt is an air- and vapour-permeable, highly water-resistant roofing underlay for pitched roofs. Its permeability allows complex roof geometries to breathe without secondary ventilation or air gaps, supporting both warm and cold roof build-ups when installed to the manufacturer’s guidance.
- Vapour permeable – reduces interstitial condensation risk
- Fully air permeable – promotes uniform airflow across the roofscape
- Highly water resistant – sheds wind-driven rain under the primary covering
- More uniform airflow than discrete vents
- Wind uplift resistance suitable for UK exposures (see data sheet)
- BS5534:2014+A2:2018 underlay compliance (learn more)
- No internal VCL typically required in many pitched applications*
- 15-year warranty
*Always confirm build-up, climate zone and occupancy. Follow the latest A. Proctor guidance and your designer’s specification.
Product Data | Proctor Air® Roofing Felt
Download technical literature for performance, installation and wind zone fixing:
Key Specifications
| Membrane type | Air- and vapour-permeable pitched roof underlay |
|---|---|
| Primary use | Warm & cold pitched roofs under slate, tile and hard metals |
| Standards | BS5534:2014+A2:2018 (underlays); consult data sheet for wind uplift |
| Ventilation | No secondary vents typically required (check project specifics) |
| Warranty | 15 years (manufacturer terms apply) |
Applications & Compatibility
Use Proctor Air® under traditional and contemporary coverings. Typical pairings:
- Spanish slates & reclaimed Welsh slates
- Reclaimed plain tiles & concrete tiles
- Westmorland slates
- Zinc and hard-metal roof coverings (follow metal roof manufacturer detailing)
Recommended With
- BS5534 graded roofing battens
- BS5534 compliant nails & fixings
- Eaves trays & ventilation accessories for robust eaves detailing
- Roof area & slate calculators to plan quantities
Trade & Bulk Pricing
Pallet rates: 24 rolls for £2,790 + VAT or 72 Rolls for £7,450.00+VAT Add quantity to cart to receive discount, shipping rates apply.
We carry stocks of reclaimed and new roofing materials to complement Proctor Air® underlay. Explore our wider roofing materials range.
Why choose Proctor Air® roof felt?
- Supports breathable roof build-ups — fewer penetrations vs. vented solutions
- Helps manage moisture vapour movement from the roof space
- Backed by a 15-year warranty and proven UK site performance
Need specification help? Speak to us for wind zone fixing patterns, eaves details and interface guidance with slates, tiles and hard metals.
Proctor Air® – Frequently Asked Questions
Do I still need roof ventilation with Proctor Air®?
In many pitched applications, secondary ventilation is not required because the membrane is both air- and vapour-permeable. Always verify your specific build-up and exposure conditions.
Is a vapour control layer (VCL) required?
Typically no internal VCL is required where Proctor Air® is used correctly, but designers should confirm for the occupancy type and insulation strategy.
Is it compliant with BS5534?
Yes — Proctor Air® is specified for use as a BS5534 roofing underlay. Refer to the data sheet for wind uplift and fixing guidance.
| Weight | 5 kg |
|---|
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