Doors and Windows - Frame size to leave

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n0c7
02-08-08, 08:43 PM
Installing a couple of 30" doors. The 30" is the door itself, the casing/frame is 3/4 inch on both sides making the total span just shy of 32". What size of rough opening do I need to leave for width and height? It's a standard 80" (really 79.5") height.

mikeTN
02-08-08, 09:18 PM
Installing a couple of 30" doors. The 30" is the door itself, the casing/frame is 3/4 inch on both sides making the total span just shy of 32". What size of rough opening do I need to leave for width and height? It's a standard 80" (really 79.5") height.

usually 2 inches. if the rough opening is really square, you can do with a little less.
n0c7
02-08-08, 09:48 PM
2 inches for width and 2 inches for height as well?

As for being really square, I'm going to try, but its a basement and the floor isn't the flattest.

Wirepuller38
02-09-08, 05:40 AM
Minimum framed rough opening width should be 32 inches for 30 inch doors. Allow extra width if sides are not plumb. R.O. height should be 82 1/2 inches assuming finished floor will be installed before door is installed.
n0c7
02-09-08, 06:40 PM
Thanks, appreciated.
n0c7
02-11-08, 03:49 PM
One more question - should I hang the doors before or after carpet? I've heard of people doing this both ways.
lefty
02-11-08, 04:32 PM
Install the doors before installing the carpet. You want the jamb legs sitting on solid, and carpet is anything but solid. The doors can always be shortened a bit if needed.
n0c7
02-11-08, 06:46 PM
Install the doors before installing the carpet. You want the jamb legs sitting on solid, and carpet is anything but solid. The doors can always be shortened a bit if needed.

1/2 inch a good gap to shim the jamb legs up?