Rhinovent Ultra Breather Membrane 1M X50M

Rhinovent Ultra Breather Membrane 1M X50M by Principal Building Products Ltd is a BBA-certified, mid-weight vapour-permeable roofing underlay engineered for pitched roof construction. Covering 50m² per roll, this 112gsm breathable membrane is the trusted choice for roofers, builders, and serious DIYers who need a reliable, compliant underlay for both warm non-ventilated and cold ventilated roof systems.

Key Features and Specifications

• Coverage: 1m wide × 50m long — 50m² per roll
• Weight: 112gsm mid-weight breathable membrane
• Construction: Laminated composite — two layers of nonwoven polypropylene spunbond felt bonded around a vapour-permeable microporous film
• Vapour resistance: Low water vapour resistance (Type LR) underlay — allows moisture to escape the roof space
• BBA certified breathable roof tile underlay
• Compliant with EN 13859-1 (Annex ZA) — Underlay for discontinuous roofing
• Manufactured under ISO 9001 quality management system
• Wind uplift: Reduces wind uplift forces when installed on appropriately spaced battens
• Temporary weather protection against wind-driven rain, snow, and dust during construction
• Lightweight and flexible for fast, easy installation

Applications

• Pitched roof underlay beneath roof tiles or slates
• Warm non-ventilated roof systems — no additional ventilation required when correctly installed
• Cold ventilated pitched roof systems
• New-build roofing and full roof replacement projects
• Re-roofing and roof renovation work on residential and light commercial properties
• Protecting roof timbers and rafters from condensation, damp, mould, and rot

Why Choose This Product

The Rhinovent Ultra Breather Membrane 1M X50M delivers BBA-certified performance at a competitive price point, making it a practical choice for trade professionals and self-builders alike. Its Type LR low vapour resistance classification means it can be used in both warm and cold roof configurations without additional ventilation measures, simplifying specification and installation. The dual-layer polypropylene construction is durable yet lightweight, reducing handling time on site. Full compliance with EN 13859-1 and ISO 9001 manufacture gives specifiers and contractors the assurance needed for building regulations sign-off.

Delivery in and Around London

We deliver the Rhinovent Ultra Breather Membrane across London and the surrounding region, including inner boroughs such as Croydon, Lewisham, Southwark, Camden, and Hackney, as well as Greater London areas including Enfield, Bexley, Redbridge, and Barnet. We also supply to customers across Kent, Essex, Surrey, and Hertfordshire. Trade quantities are welcome — contact us for bulk pricing and pallet delivery options.