Do External Fire Doors Need Intumescent Strips

Does not need to have fire resisting properties and. The main categories of fire doors are fd30 and fd60 fire doors which offer 30 and 60 minutes fire protection. We re sometimes asked incidentally whether a designated fire exit can also legally be used as a.

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Its purpose is to enable the swift exit of people to safety.

Do external fire doors need intumescent strips. An external fire door at the end i e. They should be fitted with the appropriate intumescent strips smoke seals and a self closing mechanism. It is important that the self closing. In the past when intumescent strips were installed on doors with 25mm rebates the opinion then was the 25mm door stop inhibited the actuation of the strips and 12mm door stops should be used.

Fire resisting doors must be fitted with external dual action hydraulic type. Certification testing of timber fire doors to determine the fd rating of fire doors the manufacturers have their fire doors assessed by subjecting them to a test procedure as specified in bs 476 22 1987 or bs en 1634 1 2014. 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. Firefighter s tips for fire door installation and use there are some simple must knows when it comes to fire doors and their safe use and installation.

Intumescent strips may also come with small brushes sticking out of them. The minimum requirement is for an fd30 door to be fitted providing 30 minutes fire resistance. Again these are commonly found in the middle of double doors or a garage. If your door does not already have grooves you will need a router and the router bit must match the size of the strip you are fitting.

Cut the strip to the desired length to match the height of the door. Do get accredited professionals to install your fire doors. Intumescent strips but do have 25mm door stops the requirement is only for smoke seals to be fitted. In the event of a fire the intumescent strips ensure a door retains fire.

The brushes act as fire door smoke seals. Check your door s certification look for british standard bs parts 22 and 31 or bs en 1154. The boundary to the outside and safety of an escape route. This is for the prevention of smoke passing through the door until the intumescent strip has reached the temperature to be activated.

The front door of every individual flat needs to be a tested and certified fire door. Does not need to be kept closed. Using this argument the 25mm stop was doing its job without the intumescent strip so why is it needed now. Most new fire doors will come with pre routed grooves to fit the intumescent strips into.