Author Topic: smoke seal requirment  (Read 4696 times)

Offline SeaBass

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smoke seal requirment
« on: July 06, 2011, 06:59:48 PM »
Does anyone know when the requirment for cold smoke seals on fire doors opening into protected escape routes in schools was first introduced?

Offline Tom W

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Re: smoke seal requirment
« Reply #1 on: July 07, 2011, 09:06:29 AM »
There is no requirement for strips and or seals on any doors.

Offline Tom Sutton

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Re: smoke seal requirment
« Reply #2 on: July 07, 2011, 11:49:30 AM »
As piglet says there is no legal requirement but BB 100 does recommend "2.5.10 Fire doors. Any door in a fire-resisting or compartment wall
will be a fire door, designed to resist the passage of fire and smoke" (when closed). If you can get hold of BB 7 the previous guide there may be a similar recommendation and this guide goes back to the 1960,s if not before.
All my responses only apply to England and Wales and they are an overview of the subject, hopefully it will point you in the right direction and always treat with caution.

Offline kurnal

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Re: smoke seal requirment
« Reply #3 on: July 07, 2011, 08:08:39 PM »
BB7 5th edition 1975 designated doors types 1,2 and 3 in accordance with CP3 chapter 4 parts 2 and 3 (1968)

For example in BB7 5th edition 1975 smoke stop doors across corridors were type 2 doors and were to be provided with 25mm rebates. It does refer to the BS476 test for fire doors presumably at that time that would have been BS 476:Part 8:1972. Now that seems contradictory because if I recall BS476 part 8 incorporated a positive pressure in the furnace and a door would require an intumescent seal to pass this test.

Definately no smoke seals though because these did not appear till the early 1980s.