Intumescent Door Seals Regulations

Standard intumescent strip and smoke seal.

Intumescent door seals regulations.

A regular fire and smoke seal will be fitted to a fire door. This is for the prevention of smoke passing through the door until the intumescent strip has reached the temperature to be activated. Each flat has a fire door with self closers but no smoke seals or intumescent strips. The first difference you will notice is that smoke seals are always visible regardless of the position of the door.

As soon as the temperature in the vicinity of the strips exceeds 200 c usually about 10 15 minutes after the start of a fire the seal swells and seals the gaps between door and frame. Both smoke seals and intumescent strips go in the same places between doors and frames. These seals come in various colours so as to match the colour of the door you have hiding the seals as best possible. Intumescent products are typically used for a smoke and fire barrier on wood doors and are activated by heat.

It has three flats one each floor. If this cannot be achieved the intumescent seals may be fitted into the door edge. These seals are fitted into grooves cut into the door or the frame or alternatively can be surface mounted as soon as the temperature in the vicinity of the strips exceeds 200 c usually about 10 15 minutes after the start of a fire the seal swells and seals the gaps between door and frame. These seals are fitted into grooves cut into the door or the frame or alternatively can be surface mounted.

The brushes act as fire door smoke seals. I am looking at a supported living scheme for three preople with learning disabilities. Guide to the selection of smoke seals april 2016 intumescent fire seals association page 5 of 27 while each recommendation requires the testing of a door assembly in accordance with bs476. Intumescent strips are a little more discrete in most instances and so many people.

Section 31 1 there is a divergence in requirements at the threshold. This will prevent both fire and smoke from seeping through the sides or bottom of the door. Can anyone tell me when building regulations made intumescent strips and smoke seals compulsory on fire doors in new builds. Again these are commonly found in the middle of double doors or a garage.

The recommended seal size for most modern 30 minute doors other than doorsets is 15mm x 4mm. The recommended seal size for most modern 60 minute fire doors is 20mm x 4mm or 2 no. Approved document b for example allows performance to be evaluated without any. Fire door seals or fire and smoke seals.

Generally speaking the requirement for intumescent seals or gaskets are a function of the individual manufacturers listing. Intumescent fire door seals should be fitted to the stiles and head of a fire resisting doorset. How is a smoke seal different from an intumescent strip.