Internal door sizes

[Smk80]

Hi all,

I am thinking of replacing our internal doors however the sizes are a not your typical standard heights. The heights range from 1900mm to 1970mm. All the doors sold in the likes of Selco, B&Q, Wickes seem to come in 1981mm height.

There is also one door that is only 710mm in width and the standard doors sold appear to come as 762mm width so again same question how much can be taken off the sides?

My question is how much can you take off the top and bottom of a door before comprimising the door?

Thanks

 

[foxhole]

28” (711mm) is a normal door width .
Height reduction depends on the door design and material .

 

[Deleted member 174758]

My question is how much can you take off the top and bottom of a door before comprimising the door?

With many modern (composite and hollow core construction) doors you are restricted to maybe 5 or 6mm on each side, and the same top and bottom, sometimes less depending on the manufacturer's instructions. If the door is solid wood, though, there is a bit more leeway.

If you are dealing with 44mm thick (non-fire) flush doors it is possible to buy blanks which can be cut to size and lipped with 10mm hardwood lippings all round. This is still commonly done on commercial jobs where fire doors are not required. 35mm domestic blanks are a lot harder to come by in my experience