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picsaro
Prehung door won't fit in opening

I'm trying to to install a prehung door in my bathroom closet. The problem is, the rough opening is only 80", and i'll need 81" or 82" to install the new unit. Other than using the old jamb and installing just a new door that I cut to 79", any suggestions as to what I can do? Any way to raise the height of the opening?
thanks

A. Spruce
Re: Prehung door won't fit in opening

Whether or not you can modify the opening will depend upon how it was framed, what it's supporting above it, and how much work and effort you want to go to to get the extra inch or two. It would be far easier, and in keeping with all the other doors in the house, if you just shorten the jamb legs and door slab of the prehung unit, than trying to modify the opening. You'll want approximately 1/4" to 1/2" clearance between the top of the door jamb and the framing, and about 1" clearance between the bottom of the door and the floor covering (but use surrounding door gaps as your guide ).

havanagranite
Re: Prehung door won't fit in opening

I would take a sawzall and cut out the 2x4 at the top of the closet opening and then take a piece of 3 5/8 metal track (used with metal studs I think home depot sells it if not you can get some from a drywall supplier) and put the metal track at the top of the opening slid onto any studs that are haning down in the opening and this should give you another 1 1/2 inch

Re: Prehung door won't fit in opening

id love to just trim the jamb legs, but even if i did that id still not have enough clearance. This metal track you speak of, do you have a link to it so I know what I am looking for?
thanks

havanagranite
Re: Prehung door won't fit in opening
A. Spruce
Re: Prehung door won't fit in opening
picsaro wrote:

id love to just trim the jamb legs, but even if i did that id still not have enough clearance.

Just curious why not? If you trim the legs to get the jamb in the opening, and then trim the door to clear the floor covering as earlier noted, then your prehung door should work just fine.

Re: Prehung door won't fit in opening

because the top of the casing to the bottom of the door measures just under 81". the opening i have is only 80". so any trimming i do to the sides of the jamb is moot.

A. Spruce
Re: Prehung door won't fit in opening

That is why you cut both the jamb legs (wood frame around the door slab ) and the door bottom. You could make the whole prehung unit 3" tall if that's what you needed. :)

havanagranite
Re: Prehung door won't fit in opening
A. Spruce wrote:

That is why you cut both the jamb legs (wood frame around the door slab ) and the door bottom. You could make the whole prehung unit 3" tall if that's what you needed. :)

its just hard to make the knob work when you do.

canuk
Re: Prehung door won't fit in opening

picsaro ... short of ripping out the opening and possibly moving framing ... the suggestion A.Spruce makes installing the pre-hung unit has merit ... or do as you mentioned in the original post ... use the existing jam , buy a door , cut it to size and you're done.

A. Spruce
Re: Prehung door won't fit in opening
havanagranite wrote:

its just hard to make the knob work when you do.

Ok, what am I missing here? :confused: How does trimming a little off the bottom of the jamb legs and a little off the bottom of the door mess with the knob?

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