Cavity Closers or Windows Formers act as a seal to insulate your property properly. They are used for the purpose of overcoming thermal loss that can occur around unprotected cavities. Thermal loss can result in lower energy efficiency ratings, as well as cause problems relating to condensation, water staining and mould growth in your home. As a result, cavity closers are a hugely important factor in insulating your home from the effects of adverse weather.
Further benefits arise in relation to the construction process, as the cavity closer can be used in place of dummy timber frames, meaning less waste and more convenience to the builder. It also creates a solid, square template from which to create the brickwork around your structural openings. This allows for faster and more accurate brickwork.