Prehung door is too shallow

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Old 12-09-10, 03:10 PM
jhh
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Prehung door is too shallow

Hi,
I've installed in interior door before, so I'm perplexed as to why this one doesn't fit. I bought it at either Lowes or Home Depot over a year ago. When I test fit the door where the slot is supposed to insert into the groove (where the two halves of the door are supposed to mesh together), they don't even touch.
My wall is new. It is standard 2x4 with 5/8" drywall. Do most prehung doors only work with 1/2' drywall ?
Any ideas?

Thanks.
 
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Old 12-09-10, 03:38 PM
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1/2" rock is standard for walls but you're only talking about a 1/4" difference here between the two

What's the gap you're seeing?
 
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Old 12-09-10, 03:52 PM
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Hi there,
Typical off the shelf prehung door will be set up with 4 9/16" jamb
for stud plus 1/2" drywall as Mitch said.
Sounds like you might have an adjustable jamb that slides together
from both sides of opening.
Same question from me...What size gap do you see?
 

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Old 12-09-10, 03:52 PM
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Standard wall thickness is 4 9/16" (2x4 + 1/2" drywall on both sides). So you will probably want to add a thin extension jamb onto one side of your jamb. Usually the side of the jamb that does not have the hinges and latch is the best side to put it on. You usually want to leave a 1/4" reveal, or step back, when you attach the extension onto the jamb.
 
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Old 12-09-10, 07:07 PM
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Thanks guys,
I'll get back to you on the measurement.
I've heard of extension jambs but it seems most of what I read was talking about cutting them from scratch. Do these extensions come prefab'd ?

Jeff
 
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Old 12-09-10, 08:00 PM
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If your thickness is only off by 1/4" (drywall on each side is 1/8" thicker) then you can look for screen moulding. It's approximately 1/4 x 3/4.
 
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Old 12-10-10, 10:16 AM
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Hi,
the wall thickness is 4 3/4". It seems odd to me that a pre-hung door would not be
adjustable for 5/8" drywall. Are there some that do and others that don't?
In other words, this was a cheap door. Can I got buy a correct cheap door and do away
with all the custom fixing?

Jeff
 
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Old 12-10-10, 03:56 PM
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I would wonder about the door you got. It sounds like you got one that is made for a narrower wall. I'd call the store and see what they have in stock. You can't take it for granted that they stock what you need.
 
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Old 12-10-10, 04:23 PM
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I agree with X. A stock door should have enough play for that. If you bought a return or discount door..it could be off.

Easiest would be to remove the trim and extend the jamb as I think has been stated.
 
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Old 12-15-10, 12:01 PM
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Hi,
sorry it's been so long getting back to you all.
I visited Lowes and saw that they carry a door for up to 5 1/4" jamb.
I'm guessing that would work for 5/8" drywall.
I wish I were in the mood to be a carpenter and make some
extension thingy because I already painted the door and won't be
able to return it.

Thanks for all you help folks ; really appreciate it.

Jeff
 
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