Buying and hanging internal doors
Buying and hanging internal doors
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Discussion

LaserTam

Original Poster:

2,181 posts

240 months

Friday 22nd August 2025
quotequote all
I'm not planning on hanging them myself, but I need to buy a few internal doors. Glazed and unglazed.

I'm assuming I buy the door with the closest sizes possible, but leaving enough to fill the door and then planed to size. But how much can realistically be planed off? Example current door width is 754mm, door I'm looking to buy is 762mm. I'm assuming 5mm on each side is fine?

But height is much more. Current door is 1935mm, new door is 1981mm. So 23mm ish off top and bottom. Still possible?

Cow Corner

680 posts

51 months

Friday 22nd August 2025
quotequote all
The door manufacturer will be able to confirm how much to can cut/plane them down by.

As an example, the last lot I bought had a 20mm solid lipping around all the edges, which obviously was their limiting factor.

untakenname

5,236 posts

213 months

Friday 22nd August 2025
quotequote all
Be careful with cheap modern 'wooden' doors, tried planing one and after the first couple of mm it turned into MDF with an interior made from cardboard.

SteBrown91

2,947 posts

150 months

Friday 22nd August 2025
quotequote all
If you are getting a joiner to do it then they would be able to go round all the doors and suggest whether the range you are looking at will all be doable.

And if not show alternatives/catalogues etc.

Shooter McGavin

8,549 posts

165 months

Friday 22nd August 2025
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I have hung them myself before, usually the suppliers specify the max trimming in their technical information.

For example, I've just looked at some random doors on the Wickes website which says "Extra thick lipping allows you to trim up to 20mm in width and 20mm in height from the door. Any reductions must be removed equally from each edge"

Simpo Two

90,749 posts

286 months

Friday 22nd August 2025
quotequote all
If you find yourself needing to cut so much off the height that you expose the core of the door, then take it off the top. Then cut out the cardboard bits and glue in a batten planed to the right thickness. It won't look perfect but being on the top it won't be seen.

Baldchap

9,331 posts

113 months

Friday 22nd August 2025
quotequote all
https://www.amazon.co.uk/s?k=door+airbag+wedge&amp...

These sorts of things are a godsend if you are hanging them by yourself.

I have Hedgehog branded ones that are ace, but all I can see is cheap Chinese ones, so probably worth a search.

Simpo Two

90,749 posts

286 months

Friday 22nd August 2025
quotequote all
Baldchap said:
https://www.amazon.co.uk/s?k=door+airbag+wedge&amp...

These sorts of things are a godsend if you are hanging them by yourself.

I have Hedgehog branded ones that are ace, but all I can see is cheap Chinese ones, so probably worth a search.
I just stand the door on a magazine or two. There's always something lying around the right thickness.

LaserTam

Original Poster:

2,181 posts

240 months

Saturday 23rd August 2025
quotequote all
Thanks for replies, unfortunately unable to find the info needed on the website I'm buying from. I will dig a little deeper to try and find the info,

Turn7

25,189 posts

242 months

Saturday 23rd August 2025
quotequote all
If you buy decent solid cored doors, it wont matter, other than ensuring the aestetics remain balanced.

DonkeyApple

65,771 posts

190 months

Saturday 23rd August 2025
quotequote all
LaserTam said:
Thanks for replies, unfortunately unable to find the info needed on the website I'm buying from. I will dig a little deeper to try and find the info,
Switch website is the short answer.

All you need to do is buy doors that have sufficient wood in the frame and the website selling them should contain the details regarding how much wood there is.

You're not looking to cut much away so finding suitable doors won't be an issue but the cheapest doors are designed to fit perfectly into standard frame sizes without any trimming bar on the bottom where there is usually around an inch of wood to allow for different flooring types.

For years I've just used this company as they have a good range of cheap to expensive doors, for example this one is hollow and can inky survive a couple of mm coming off: https://www.fine-doors.co.uk/internal-doors/white-...

But the real reason I use them is because they're really pleasant people who answer the phone and can answer all your questions. They're just a really nice business to spend money with and give you confidence that you're not about to balls things up.

LaserTam

Original Poster:

2,181 posts

240 months

Saturday 23rd August 2025
quotequote all
Turn7 said:
If you buy decent solid cored doors, it wont matter, other than ensuring the aestetics remain balanced.
Fair point, but budgets are budgets unfortunately.

SimonKD

1,386 posts

252 months

Saturday 23rd August 2025
quotequote all
A few mm off the sides is normal, and most decent doors can handle 20-25mm off the top or bottom without issue. Just check the manufacturer’s specs before you buy because some cheaper ones only allow a small trim.

dmsims

7,319 posts

288 months

Saturday 23rd August 2025
quotequote all
They vary a lot!

Howdens not much and actually a bit carp

Deanta a lot more and better in every way

(Oak veneered fire doors)