DuPont Tyvek Supro - Breather Membrane Underlay - 1.5m x 50m roll

DuPont Tyvek Supro Breather Membrane is a premium breathable roofing underlay designed for pitched roof constructions in both domestic and commercial buildings. Manufactured from a high‑density polyethylene (HDPE) Tyvek core with a laminated structure, it provides exceptional water resistance, vapour permeability, and long‑term durability under all common roofing materials. Tyvek Supro is engineered as a secondary weatherproofing layer beneath tiles, slates, or metal roofing. Its unique Tyvek structure allows moisture vapour to escape from the roof build‑up while preventing external water ingress, helping maintain insulation performance and reduce the risk of condensation.

The membrane is suitable for warm roof, cold roof, and hybrid roof assemblies, and complies with EN 13859‑1 for roofing underlays.

APPLICATION

DuPont Tyvek Supro is used in all type of roofs, including warm, cold, hybrid and metal pitched roofs, as well as wall and floor structures 

• Warm roof systems
• Cold roof constructions
• Loft conversions
• Slate and tile roofs
• Metal roofing underlays

CHARACTERISTICS

• Highly breathable membrane — low sd value for effective vapour diffusion.
• Superior water resistance — W1‑rated water hold‑out for reliable weather protection.
• Exceptional durability — robust Tyvek HDPE core with laminated reinforcement.
• Wind‑tightness — reduces air movement within the roof, improving thermal efficiency.
• UV‑resistant — withstands temporary exposure during installation.
• Suitable for all pitched roof types — tiles, slates, metal sheets, and composite systems.
• Easy installation — lightweight, flexible, and compatible with standard fixing methods.

CERTIFICATION

• BBA certificate No 08/4548
• IAB certificate No 04/015
• The product is classified in accordance with BS EN 13501-1 : 2007 as a Class E material.