interior door size

  • Thread starter BuildingNovice
  • Start date


Given an outer door frame size (i.e. the frame into which the door will fit, not the inner 'stop' frame), what allowances are usually made for height and width of actual door (to allow door to move freely).

Measuring my existing doors, there seems to be 5mm at either side for width (10mm in total) and 5mm at top.
Sponsored Links
16 Apr 2004
Reaction score
United Kingdom
Standard specification is for 3mm gaps top and sides. Bottom depends on floor finish.


2mm gap round sides and top of frame can be aimed for. I was taught to slide an old shilling piece between door and frame. That's certainly less than 3mm.
Bottom gap all depends on what flooring there is (carpets, laminate, etc)
;) ;) ;)
Sponsored Links

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