Door frame dimensions and header size?


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Old 10-01-14, 10:22 AM
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Question Door frame dimensions and header size?

How do your figure out the door rough frame width and height? The door is 80" x 32".

Also are their any specific codes on headers? Like do I have to use 2x6 or can I just use a box supported by jacks made of 2x4s? This is for a non load bearing wall.
 
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Old 10-01-14, 10:31 AM
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Door width + 2. Door height + 2... depending on floor coverings. If there are other existing doors nearby, you usually want the new jamb to line up with the old jamb so that the casing all lines up. So normally that rough opening would be 34x82.

Chapter 6 - Wall Construction

IRC 2006 and 2009, Section R602.7.2

Nonbearing walls. Load-bearing headers are not required in interior or exterior nonbearing walls. A
single, flat 2-inch-by-4-inch (51 mm by 102 mm) member may be used as a header in interior or
exterior nonbearing walls for openings up to 8 feet (2438 mm) in width if the vertical distance to the
parallel nailing surface above is not more than 24 inches (610 mm). For such nonbearing headers,
no cripples or blocking is required above the header.
 
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Old 10-01-14, 10:42 AM
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Thank you Xsleeper
 
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Old 10-06-14, 01:57 PM
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Quick question, if I am just using standard vinyl floor tiles how much space with the +2" of height leave me between finished floor and door bottom?

I only ask because I am seeing a lot of people recommending +2 1/2" on the height but I am assuming they are accounting for a thicker finished floor like wood.
 
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Old 10-06-14, 02:24 PM
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You can leave that height, but don't worry about finished floor at this point. If you have your vinyl, you can figure that 1/8 or 3 1/6" in when setting it, but don't try to make it too high. You can always cut the casing off, but you can't water it to make it stretch The 2" excess height will account for 1 1/2" of door casing plus 1/2" of play, usually just enough to use shims on either side or on the top.
 
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Old 10-06-14, 04:44 PM
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Thanks Chandler, I had an extra piece of soffit so I decided to cut that down and use it as a header to give it more stability. After I anchor the wall to the floor I'll put support studs against the doorway 2x4's.

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