1 Hour Fire Door Intumescent Strip

Intumescent materials swell with heat making them perfect for sealing gaps to prevent the spread of fire and protecting the materials beneath.

1 hour fire door intumescent strip. 3m expantrol flexible intumescent strip e fis is an intumescent tape designed to seal the air spaces between doors frames and glass to help prevent the spread of fire smoke toxic gases and other by products from penetrating into adjacent areas. Intumescent material expands and forms a hard char when exposed to heat. An fd30 door will resist fire for 30 minutes and an fd60 door will resist fire for 60 minutes. The weak point of a fire door is the gap between the door and the frame and this is where the presence of an intumescent strip is.

Intumescent strips in the frame or the door not both. In the event of a fire the intumescent strips ensure a door retains fire resisting properties and holds back the blaze while occupiers escape. Features low friction brush pile to aid door closing. This flexible conformable strip can be quickly cut to required sizes.

Independently as detailed above. Available in white brown grey or woodgrain this colour coded brush is easy to install just fit this strip into your fire doors rebate and when subject to. 60 minutes fire resistance integrity 54mm certified core to bs 476 pt22 1987 or bs en 1634 1 2014. The job of a fire door is to prevent the spread of fire from room to room and the length of time the door will contain the fire is given in the fire rating of the door.

For maximum effectiveness they need to be rebated into either the. Intumescent fire seals expand in the event of a fire and seal off the gap between the door and the frame preventing the spread of fire and smoke. Intumescent strips or fire door strips are fitted to the door and when exposed to extreme heat expand to close any edges or gaps that may leave the fire door vulnerable to fire and smoke spread intumescent door strips are usually designed to provide up to 30 or 60 minutes fire resistance and help to contain the fire in one area and prevent it spreading. This combined fire and smoke seal prevents the spread of smoke prior to the fire seal activating.