Fire door and rebate for hinges - interfere with intumescent strip

Joined
29 Jan 2008
Messages
2,129
Reaction score
461
Location
Liverpool
Country
United Kingdom
Hey all,

Fitting my first fire door today.


As per the picture, it’s got an intumescent strip and smoke seal.

My question is about the hinges. Normally I’d rebate them, but won’t this interfere with the strip?

Ive got fire hinges, but they don’t have their own intumescent stuff.

Should I just plonk the hinge on without rebating it?

Thanks
Andy

FC566322-8C95-40C7-A0F7-44924A82FB8F.jpeg
 
Sponsored Links
you rebate them, and put an intumescent pad under each leaf of each hinge.

you can also get intumescent pads and wrappers for mortice locks and other door furniture.

there's a good range of products here

there must be a leaflet somewhere showing the requirements. Maybe BC at your local council?

edit

btw the self-adhesive strip sticks better, and looks neater, if you apply it after painting.

have you bought the hinges yet? I favour lift-offs, as it is very wearisome taking a heavy door off and refitting it.
 
Thanks.

I like that website but everything is in bulk, so I’ve ordered the bits from screw fit
 
...have you bought the hinges yet? I favour lift-offs, as it is very wearisome taking a heavy door off and refitting it.
Fire door hinges are normally bearing types these days, so I very much doubt you'll find lift off fire rated hinges (or at least I've never seen them specified)

OP - the intumescent requirements are partly down to the rating. Is this a 30 minute, 60 minute or 120 minute opening?

Intumescent pads for the hinges require the hinge recesses to be about 1mm deeper to accommodate them.
 
Last edited by a moderator:
Sponsored Links
Fire door hinges are normally bearing types these days, so I very much doubt you'll find lift off fire rated hinges (or at least I've never seen them specified)

OP - the intumescent requirements are partly down to the rating. Is this a 30 minute, 60 minute or 120 minute opening?

Intumescent pads for the hinges require the hinge recesses to be about 1mm deeper to accommodate them.

Thanks. I had to get bearing hinges as I couldn’t find lift offs. It’s an FD 30 door between the garage and the house in my extension.
 
Fire door hinges are normally bearing types these days, so I very much doubt you'll find lift off fire rated hinges (or at least I've never seen them specified)

OP - the intumescent requirements are partly down to the rating. Is this a 30 minute, 60 minute or 120 minute opening?

Intumescent pads for the hinges require the hinge recesses to be about 1mm deeper to accommodate them.

I have them almost exclusively.

Also branded as Eclipse, Union, Royde & Tucker, etc
Though I suspect they all come from the same factory.
Prices vary.

Example
https://www.ironmongerydirect.co.uk...hinge-100x88x3mm-right-hand-satin-zinc-139999

upload_2021-6-23_9-9-44.png


I prefer them in stainless, or the difficult to find PVD finish.

Mine have a phosphor-bronze bearing (not balls) and swing like silk.
 
Here we go again, I've never got an answer to this even off supposed 'experts' and manufacturers .... what is the point of an intumescent pad behind a hinge - the whole point of intumescent material is to expand and seal gaps?

Just cut the strip to the hinge.
 
Don't you have to be FIRAS accredited to fit fire doors now?
No.

The only criteria is to follow the manufacturer's fitting instructions, but there is no law or precedent that the fitter needs to be specially trained or that the installation is subsequently checked by someone who is.
 
It's ok following manufacturers instructions but would Joe bloggs be able to implement them, I mean my mum can follow instructions but would she be able to shoot a door in to leave a 2mm gap all the way around never mind a set of double doors, surely for them to be effective as a fire stop they need to be fitted by a competent person who has proven with accreditation they he/she is or that they are inspected by BC, if no to any of that then why even bother fitting intumescent strips and hinge pads and shoot it in leaving a 5mm gap? Just saying, not dissing the OP
 
Here we go again, I've never got an answer to this even off supposed 'experts' and manufacturers .... what is the point of an intumescent pad behind a hinge - the whole point of intumescent material is to expand and seal gaps?
You might as well ask what the point of wrapping lock bodies in intumescent "paper". It is not only to fill gaps but also, because the intumescent compound is an insulator, to reduce transmission of heat through metal components. That was the official line I was given on a fire safety training course a few years ago as being "current thinking" at the time. So whilst I don't like them (they makesesting the hinges into recesses more awkward), I do fit them.

BTW the tutor was a serving fire officer, so Iexpect he knew his stuff. Also, if you are in room where the intumescent strips have done their job in the door, you are probably dead, because they only work at very high temperatures - their function is to slow the spread of fire, enabling people to escape.
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Sponsored Links
Back
Top