Framing around doors

**Senad** · 7th August 2006, 12:37 PM

Hi guys,
First of all, great forum, thanks for having something like this on here.
I just registered after stumbling upon this place looking for a couple of answers on the web.
I'm doing a bit of a project on my own which includes framing a few walls and door and window openings.Just wandering what size opening is required for a standard size single door. So what I would like to know is after the frame is put in place, what should the distance be from inside to inside of the studs on each side of door opening.I was thinking 900 mm.Will that allow for the jambs and a couple of mm on each side of door panel once installed?
Thanks very much
cheers

**silentC** · 7th August 2006, 12:56 PM

Depends on the thickness of your jamb material. For a standard 810 door, I would aim for 815mm between jambs, so add the thickness of your jambs plus say 5 or 10 mm to allow you to pack them plumb (just incase your framing is a bit off).

For example, I used 19mm jambs in my place, so the stud opening was about 860mm. If you make it too wide, you need a heap of packing and you may have problems fixing your architraves.

**duckman** · 7th August 2006, 01:02 PM

Originally Posted by silentC

Depends on the thickness of your jamb material. For a standard 810 door, I would aim for 815mm between jambs, so add the thickness of your jambs plus say 5 or 10 mm to allow you to pack them plumb (just incase your framing is a bit off).

For example, I used 19mm jambs in my place, so the stud opening was about 860mm. If you make it too wide, you need a heap of packing and you may have problems fixing your architraves.

silentC,

810mm isn't a standard width. 820mm is.

Common standard widths are

420, 520, 620, 720, 770, 820, 870mm.

There are other widths but are rare.

Cheers,

**silentC** · 7th August 2006, 01:13 PM

Oops.

Mondayitis.

Add 10mm to my example....

**Senad** · 7th August 2006, 01:24 PM

Wow, what a quick response.Thanks guys.
SilentC, thanks very much.See, the packing bit escaped me somehow so thanks very much for pointing it out.I will then see what thickness jamb material there is and follow that.
Now these doors will be a bit heavier than normal,so should I use thicker jamb material, or are the studs the ones that actually are the load bearers and jamb thickness isn't so important??
Thanks very much guys
cheers

**silentC** · 7th August 2006, 01:31 PM

Well, the thickness of the jamb material probably isn't too critical if you support it well at the hinge points. Some people like to put the hinge side hard up against the stud and screw right through the jamb into the stud. For heavy doors, you'll probably want to put three hinges, so if you work out where they are going to go, then make sure you either go hard up against the stud, or put some good solid fixings where the hinges will be, you'll be OK. Just make sure you don't put any nails where your hinge mortices will be.

**Senad** · 7th August 2006, 02:37 PM

SilentC, thank you very much.The idea of screwing the hinges right through into the studs seems a very sturdy option.
Amazing what one can learn on a forum in a couple hours time

thanks heaps
cheers

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