Why Permavent was chosen

The East Midlands Reserve Forces and Cadets Association (EMRFCA) required a modern, sustainable training facility to replace outdated infrastructure from the 1940s. Located beside an existing Defence Training Site, the chosen area features historic Ridge and Furrow formations, which the design carefully preserves. The project prioritises minimal environmental impact, using sustainable materials and energy-efficient design, also including an elevated walkway system that connects the dorms and provides accessible routes across uneven terrain.

Safeshield XT Reflect was selected for this project due to its outstanding fire safety credentials and sustainability benefits. As a Class A2 fire-rated breathable membrane, it offers superior protection for timber frame structures, which were a core element of the build. Safeshield XT Reflect’s reflective surface enhances thermal performance by reducing heat transfer, contributing to the building’s low carbon goals.

The membrane also supports airtightness while allowing moisture to escape, ensuring long-term durability and comfort. In addition to these benefits, it delivers W1 waterproofing, high thermal efficiency, and UV stability exceeding nine months. Our extensive research and development confirmed that conventional membranes contribute to fire spread, whereas Safeshield XT Reflect eliminates that risk entirely. These qualities aligned perfectly with the project’s emphasis on low-carbon construction, energy efficiency, and environmental responsibility.

How Permavent was installed

Safeshield XT Reflect was installed across the timber-framed dormitories and amenity blocks, forming a critical part of the external envelope. The installation process was carefully coordinated to integrate with other sustainable features, including mineral wool insulation, photovoltaic panels, and recycled tyre foundations.

The buildings were sensitively integrated into the historic Ridge and Furrow landscape using tyre foundations, which allowed for localised digging and minimal site disturbance. This approach significantly reduced the need for carbon-intensive materials, with only small amounts of concrete used where necessary.

Safeshield was installed across the face of the OSB, staple fixed, with the overlaps sealed using the integrated tape. The installation is a per BM TRADA requirements for the installation of a breather membrane in a timberframe application.

The membrane’s flexibility and robustness made it ideal for this unique construction method, with Safeshield XT Reflects contribution to airtightness and thermal regulation played a vital role in achieving the project’s sustainability targets.

“Safeshield XT Reflect stands out as a superior membrane compared to other alternatives on the market. Its inherent strength gives us confidence that the building envelope will maintain integrity in terms of waterproofing, breathability, and fire safety— both during and after construction. The Class A2 fire rating is a critical feature, especially for timber frame structures, and reinforces our commitment to building safety. Safeshield XT Reflect enables us to deliver the performance specified in the design, ensuring quality and compliance from start to finish.”

Chris Halliday

Commercial Director, Kestrel Timber Frame Ltd.