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Old 08-28-2012, 03:19 AM   #1
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Framing a Door


I am watching a video at http://www.learningconstruction.com/...or_Window.html and at 2 minutes he says I need 1 inch on each side if my manufacturer recommends 1 inch, however, I can't find how much space I need anywhere. HELP!

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Old 08-28-2012, 06:08 AM   #2
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Framing a Door


How wide is the door you wish to instal?

Is it a standard door height?

If you wish to install a 36 inch wide door----you will need to make the opening 38 inches wide.

Interior doors use 3/4" thick jambs---the actual width is 37 1/2"--add 1/2" for shimming and adjustment---

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Old 08-28-2012, 07:46 AM   #3
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Framing a Door


What mike said on width, for height, for a standard door, allow about 82 1/2+ If the floors and walls are dead level/plumb(never are), you can do with less spce on the width.
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Old 08-29-2012, 02:33 PM   #4
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Framing a Door


+1 to leaving an inch on each side and on top for pre-hung door installation. And if the framing is not completely plumb I'll add a little more, just to be on the safe side. Also keep in mind the height of the flooring (if not yet installed) when calculating how high the door needs to be.

Finally, for a pre-hung the jamb should be about 5-1/5" wide, center it in the door frame to allow for 1/2" drywall on either side of the doorway.
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Old 08-30-2012, 05:50 AM   #5
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Framing a Door


Quote:
Originally Posted by ajmckay View Post
+ Also keep in mind the height of the flooring (if not yet installed) when calculating how high the door needs to be.

Finally, for a pre-hung the jamb should be about 5-1/5" wide, center it in the door frame to allow for 1/2" drywall on either side of the doorway.

Valuable advice about finished floor height----

Interior doors are typically 4 5/8 wide---not 5 1/8---AJ might have used the number for an exterior door--
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Old 09-01-2012, 12:47 AM   #6
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Framing a Door


Quote:
Originally Posted by oh'mike View Post
AJ might have used the number for an exterior door--
Nope, I just can't do math apparently... 4 5/8 would work much better
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Old 09-01-2012, 04:08 PM   #7
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Framing a Door


I usually take the door with and add 2-1/2" Say you have a 36'door, frame it 38-1/2".
I like to leave about 1/2" on the sides if you have more you will have to use a pack of shims on each side of the door.Or you are trying to stuff something in there to use less shims.I do the same on int.doors too.

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