Door Seals

Door seals are used at the top, bottom and vertical sides of door leaves or in the frame to prevent heat loss, reduce noise pollution or to prevent the spread of smoke or fire. They are available in self-adhesive strips which ensure easy and quick installation. Alternatively an aluminium holder and flexible rubber or brush strip could be attached to clear the floor. The choice of door seal would depend on the type of door and the purpose of the seal. The most common way is to adhere a seal to the bottom of the door when there is a door sill but a threshold seal could be stuck underneath the door for doors with a larger gap. For uneven surfaces a combination of both might be necessary. Nylon door seals would be more suitable for sliding doors whilst silicon seals are ideal for containing fires. Automatic door bottom seals are mechanically spring-loaded to lift clear when the door opens but return into position when it is closed. Domestically, seals are usually installed as a way for householders to reduce heat loss and save on heating bills. In public buildings, such as schools, they can prevent noise pollution and the spread of fires.