Permavent Ltd

Permavent is a leading UK innovator in roofing and building envelope solutions, trusted by contractors, merchants, housebuilders, architects and specifiers nationwide for over 20 years.
We develop high-performance roofing underlays, walling membranes, ventilation systems and modern roofing solutions.
Our products are designed to improve build quality, streamline processes and deliver long-term performance across new build housing, social housing re-roofing, commercial projects and off-site construction.
Developed and manufactured using next-generation production methods, all Permavent products are independently tested and 3rd party certified to BBA, BRE, UKCA, and CE standards.

Product Portfolio

Our portfolio brings together roofing and building envelope solutions designed to work across a wide range of projects and applications.

Roofing Underlays
A comprehensive range for pitched roofs, including air-permeable, vapour-permeable and impermeable underlays to suit different design and installation requirements.

Walling Membranes
High-performance membranes for modern building envelopes, supporting weather protection, fire performance and energy efficiency.

Easy Roof System
A unique, patented system that enables natural slate to be installed at pitches as low as 12° and plain tiles as low as 10°, opening up more design options for low-pitched roofs.

Ventilation Systems
Roof ventilation solutions that promote airflow, help manage condensation risk and protect the building fabric.

Modern Roofing Alternatives
Permaflex offers a durable, lightweight alternative to traditional lead for roofing details.

Roofing Accessories
Tapes, clips and roofing ancillaries designed to complement the wider Permavent range and support a complete installation.