Business Details
Innovative Construction Products for Roofing & Walling
Permavent Ltd is a leading provider of innovative construction products, specializing in advanced roofing membranes and walling systems. Our patented Easy Roof System enables slates and tiles to be installed at low pitches, extending roof longevity through superior moisture control. We offer a comprehensive range of vapour-permeable membranes, fire-rated solutions, and GRP systems, all engineered to meet rigorous industry standards. With technical expertise and a commitment to sustainability, we support architects, contractors, and builders across the UK.Our products are designed for durability, cost-effectiveness, and compliance with NHBC and BS regulations. Backed by a dedicated team, we provide tailored solutions for both new builds and heritage restoration projects. Our nationwide sales network ensures localized support, while our technical department offers guidance on product specification and installation. Permavent Ltd combines cutting-edge technology with decades of industry experience to deliver reliable, future-proof construction solutions.
Services
Vapour Permeable Membranes
Fire Rated Membranes
GRP Roofing Systems
Low Pitch Roofing
Wall Ventilation Membranes
Roof Flashing Solutions
Heritage Roof Restoration
Construction Tapes
Cavity Barriers
Roof Ventilation Kits
Highlights and features
- 40-year guarantee with Permavent Ltd DRY+ membranes
- Patented low-pitch roofing systems for slates and tiles
- Nationwide technical support from industry experts
- Products UV-stable for up to 3 months during installation
- Compliant with all UK wind zones and NHBC standards
Services
Permavent Ltd APEX
Permavent Ltd APEX is an air-open vapour-permeable membrane for pitched roofs. Its integrated tape system reduces waste and installation time. Suitable for cold/warm roofs without additional ventilation, it complies with NHBC standards and offers UV stability for 3 months during construction phases.
Easy Roof System
This patented system enables slates and tiles to be installed at pitches as low as 12 and 17.5 respectively. It prevents water ingress from wind-driven rain while maintaining traditional aesthetics. Compatible with reclaimed and fibre-cement materials for heritage and modern projects.
Safeshield XT Reflect
Class A2-s1,d0 fire-rated membrane with thermal benefits from its reflective surface. Provides W1 water resistance and UV stability. Ideal for cavity barriers and external wall applications requiring enhanced fire safety compliance in commercial buildings.
Diamond GRP
Glass Reinforced Polyester system for flat roofs, offering complete waterproofing. Composed of resin, chopped strand mat, and fire-retardant topcoat. Suitable for OSB3 decks, providing a durable alternative to traditional flat roofing materials with BS EN13501 fire classification.
Permatac Tapes
Specialist sealing tapes for membrane joints and penetrations. Includes butyl, high-tack, and double-sided variants. Designed to maintain airtightness and weatherproofing integrity in roofing and walling systems while ensuring compatibility with Permavent Ltd membranes.
People
Martyn Halliwell
National Sales Director
Martyn leads Permavent Ltd's sales strategy with over 25 years' experience in construction materials. He oversees nationwide distribution and technical support, ensuring clients receive tailored solutions for complex roofing and walling challenges across residential and commercial sectors.
Craig Fyall
Technical Director
Craig provides expert technical guidance on product specification and installation. With extensive knowledge of building regulations, he supports architects and contractors in selecting compliant solutions for fire-rated membranes, vapour control, and low-pitch roofing applications.
James Ford
Specification Manager - Roofing
James specializes in roofing product specifications, working with design teams to integrate Permavent Ltd systems into new builds and renovations. He ensures compliance with NHBC standards and advises on performance requirements for challenging architectural projects.
Sian Lloyd
Area Sales Manager - Walling
Sian focuses on walling membrane solutions, supporting contractors with technical advice and product selection. She specializes in cavity barriers and external wall applications, ensuring fire safety compliance and moisture protection for residential and commercial developments.
Tom Brookes
Faade Specification Manager
Tom advises on faade and cladding systems, particularly fire-rated membranes for high-rise buildings. He collaborates with architects to meet A2-s1,d0 fire classifications, ensuring safety and regulatory compliance in complex commercial and infrastructure projects.
Questions
What is Permavent Ltd's Easy Roof System?
A patented low-pitch roofing solution enabling slates and tiles to be installed at 12° and 17.5° respectively, with integrated moisture control and compatibility with reclaimed materials.
Do Permavent Ltd membranes require ventilation?
Permavent Ltd APEX doesn't require additional ventilation in cold/warm roofs under NHBC warranty, while other membranes may need specific ventilation strategies based on application.
Are Permavent Ltd products fire-rated?
Yes, Safeshield XT Reflect and INT Reflect membranes meet A2-s1,d0 fire classification, suitable for cavity barriers and external walls requiring enhanced fire safety compliance.
Can Easy Slate be used with fibre-cement slates?
Yes, Easy Slate is compatible with fibre-cement slates, allowing traditional installation methods while providing anti-theft benefits and moisture protection.
What guarantees apply to Permavent Ltd membranes?
A 40-year guarantee requires using Permavent Ltd DRY+ membranes, with specific installation criteria. Other products have warranties based on application and compliance with technical guidelines.
How are Permavent Ltd membranes installed?
Roofing underlays use clout nails beneath laps. Wall membranes require appropriate fastening systems. Technical guidance is available for specific products like Permavent Ltd APEX's integrated tape system.
Reviews (1)
Andrew Philbey
Apr 14, 2018
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Very friendly staff, great service and prices. Dave delivered and insisted on unloading all the products for me. Could not be better would recommend using Permavent
