Surebreathe™ A1 Breather Membrane

Why choose Surebreathe™?

Reaction To Fire

Surebreathe™ A1 is classified in accordance with EN 13501-1, meaning it offers the highest reaction to fire performance classification available for building membrane systems. This makes it ideal for applications demanding robust fire performance, giving specifiers and contractors peace of mind.

Outstanding Weather protection

Surebreathe™ A1 provides reliable weather protection, combining Class W2 water resistance with UV stability for up to three months before requiring over cladding. The membrane is airtight yet vapour-permeable, ensuring effective moisture management and breathability with a water-vapour resistance below 0.60 MNs/g (Sd < 0.12 m) and air-permeability of 27 m³/m²·h @ 50 Pa.

Superior Tear Strength

Surebreathe™ is engineered for long-term durability and performance in demanding conditions. With tear resistance exceeding 250 N (longitudinal) and 320 N (transverse) and tensile strength above 1,500 N/50 mm and 1,000 N/50 mm, it maintains at least 75% of its strength after ageing. Designed to perform reliably from –36 °C to +150 °C.

Ease of Installation

Designed for straightforward handling and efficient installation. Supplied in 1.5 m × 50 m rolls on a durable cardboard core, it’s easy to cut, position, and fix into place. The membrane is fully compatible with Euroform sheathing boards and performs effectively when mechanically fixed with horizontal or vertical overlaps. For optimum sealing and airtightness, Surebreathe™ A1 works seamlessly with Surebreathe™ tapes and accessories.