Wall too thick for interior prehung doors.


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Old 06-22-20, 05:02 AM
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Wall too thick for interior prehung doors.

I wanna change a few interior doors. The thickness of my wall including the 2 drywall is like 5 and 1/16". The previous home owner had 5 and 1/16" door frames that is equal to the wall thickness.

But most prehung door frame nowadays are like 4 and 1/16. I need a thicker frame, what can I do?
 
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Old 06-22-20, 05:19 AM
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You add a piece of wood to the side of the jamb that is opposite the hinges. You get jamb stock and rip it on a table saw and fasten it to the jamb. Either that or you order doors that are the right wall thickness.
 
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Old 06-23-20, 10:28 PM
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So lets say the prehung frame is 4&9/16", but my wall needs 5&9/16" frame to match with the drywalls.
So do I table saw rip a 1" strip and nail to the prehung frame to make it 5&19/16. And if the strip is 1" wide, then how thick is it suppose to be? Like equal thickness as the prehung frame?

 
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Old 06-23-20, 10:31 PM
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Yep. You generally step the extension out about 3/16" rather than trying to line it up flush. This is due to the rounded edges on most jambs.
 
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Old 06-24-20, 02:54 AM
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Also leaving a reveal instead of making it flush takes away the need for the fit to be perfect and gives you a good joint for caulking. Looks good once primed and painted.
 
 

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