Changing door which leads into garage

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Hi guys,

I put an extension on our place and am looking to swap out the door which leads into the garage currently old upvc external door. I understand the door and lining both need to be fire rated up to 30 minutes which isnt a problem but would this door be considered an internal or external door now its part of the extension?

Struggling to find anything external in the usual places which meets my measurements of 85cm wide x 208 high (guessing it doesn't have to be 100% spot on as I can use intumescent sealant for small gaps?)

Thanks!
 
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Whilst it does not need to be a weather proof door you should consider it an external door with regards to security.
 
I'm just doing mine at the moment - a complete PITA to be honest. You'll probably need to reinstate brickwork at the bottom and detail some kind of threshold (or buy an expensive lining with a cill, and maintain the integrity of the cavity tray above the door.

Mine is an internal door but obviously the garage is an unheated space so I'm going to try my best to draft proof it - I did consider sticking some celotex on the garage side - probably not one of my best ideas!

IMG_20240710_091403337.jpg
 
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A fire door frame should have a groove into which the intumescent strip should be fitted. This swells when it gets hot and fills the gap. You can optionally buy them with a brush included, which provides draughtproofing while the place isn't on fire.

See attached photo of mine.

If you haven't got a strip then it's not a fire door. It also needs a spring to close it.

I don't know what the regs are for the bottom of the door. As mine didn't actually require a fire door, I only wanted it for soundproofing, I didn't bother looking into it.

IMG_20240710_100955058.jpg
 
I'm just doing mine at the moment - a complete PITA to be honest. You'll probably need to reinstate brickwork at the bottom and detail some kind of threshold (or buy an expensive lining with a cill, and maintain the integrity of the cavity tray above the door.

Mine is an internal door but obviously the garage is an unheated space so I'm going to try my best to draft proof it - I did consider sticking some celotex on the garage side - probably not one of my best ideas!

View attachment 348536
Fire doors don't have sills. The casing or frame should have a 15mm wide trench for the fire AND smoke intumescent seals to fit into.
 
A fire door frame should have a groove into which the intumescent strip should be fitted. This swells when it gets hot and fills the gap. You can optionally buy them with a brush included, which provides draughtproofing while the place isn't on fire.

See attached photo of mine.

If you haven't got a strip then it's not a fire door. It also needs a spring to close it.

View attachment 348540
The brush is not an option for garage - dwelling, it's compulsory.
 
Makes sense for compulsory draughtproofing for garages - petrol vapour and/or fumes.

And it blocks smoke before the door catches fire.
 
A pretty good idea anyway, keeping fumes out of the home after you've reversed the car in.

I'm not a fan of built-in garages personally, ours will be converted into a room eventually. Also it's currently the weak point in our anti-mouse armour, they can squeeze down the sides of the door then access the loft over the whole place.

Charging an electric car inside one seems a little crazy...

 
Give me a chance guys, I only put the bloody door door on yesterday - things move slowly here. Groove is ready for the fire and smoke strip and it and the closer (proper one, not a slamming chain thing) are on order.

I'm not sure how the bottom is generally dealt with - I assume it's a case that smoke rises.

Made my own threshold because I don't quite know my new FFH and didn't want to be planing the bottom off, but you can buy them (£157 at this place!!!)

IMG_20240710_122156772.jpg


Screenshot_20240710-121956.png
 
You'll find it hard to close after you fit the brush strip. Don't worry about it, it will settle in eventually.

I think Mr Critic was expecting to see one on the edge of the door, you used to but they're usually in the frame these days.
 
Give me a chance guys, I only put the bloody door door on yesterday - things move slowly here. Groove is ready for the fire and smoke strip and it and the closer (proper one, not a slamming chain thing) are on order.

I'm not sure how the bottom is generally dealt with - I assume it's a case that smoke rises.

Made my own threshold because I don't quite know my new FFH and didn't want to be planing the bottom off, but you can buy them (£157 at this place!!!)

View attachment 348548

View attachment 348549
Be handy if I could pick your brains once I have fitted the frame. I think I'll have exactly the same headaches as you have encountered as there isn't a threshold in place.
 

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