Cavity closers are used to seal cavity wall openings around doors and windows. They help prevent cold bridging, improve thermal efficiency, and meet UK Building Regulations (Part L).
Our range of insulated cavity closers are suitable for masonry, timber frame and steel frame construction. They’re lightweight, easy to cut, and quick to fit during the build process.
Ideal for new builds and extensions, these frame formers also act as a damp barrier and provide a clean finish ready for window or door installation.
