Cavity Closers

Shop our range of cavity closers, available in different sizes and materials to suit any building design. If you’re looking to insulate your home or an outbuilding, choose from our range of insulated cavity closers, which allow for a continuous insulation fill. With high levels of thermal resistance, all our high-quality cavity wall closers and window cavity closers meet or exceed current building regulations. What is a cavity closer? A cavity closer has many functions. Made from a strip of material – usually plastic – the cavity closer is placed within a cavity wall to provide insulation. Fitting cavity closers within a building also creates a seal, preventing water or damp entering the cavity wall and the interior of the building itself. Why do you need a cavity closer? Building regulations specify that any building must resist contaminants and moisture; installing cavity closers can help protect any water or dampness from entering through the walls. It is also a requirement to conserve fuel and power. Closer insulation can help ensure this standard is met.