How to repair messed up door frame, replace casing. Easy! Home Mender.
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How to repair messed up door frame, replace casing. Easy! Home Mender.

October 13, 2019


Hello this is Dustin with Home Mender and today we are going to be fixing a messed up door jamb.
That’s probably what I’m going to call the video. “How to fix a messed up door
jamb” because this door jamb is messed up. It looks like somebody has changed this
door and then cut the plaster to fit the casing, that outside casing, in and it
just looks hideous. Everybody knows hanging doors that
you’re supposed to make the door look pretty from the inside first and then
make it work on the outside later. This is obviously not done that way since
this is way farther out than the jamb but now that the outside is all
trimmed out and beautiful, we’ve got to make this work. I’m going to show you how.
Let’s get to it. So I’ve got two sides already removed
here. I’m going to go ahead and remove this top piece of casing and hopefully I
won’t break the plaster. Im going to clean up my nails here and what we’re
going to do is bring our jamb out a bit. Build it out with some 3/4 inch stock
and we’re going to lay it in there just like this and then we’ve got some wider
casing that’s going to go over top and make it beautiful. Stock molding all the
way to the floor and make a mark. It”s going to ride about 1/4 inch taller than
the bottom of the door jamb. Go ahead and nail that off. Mark our top. Now we’re ready to put on the casing. Got
some here. Gonna set it up there and all these corners when we cut are going
to need 45’s on them. Cut ’em at a 45 degree angle. I’m going to show you how to get
the measurement right. I like to mark my corners right there so when you measure,
we’re actually measuring to the short side of the casing. Let’s go ahead and
get your sides cut and hung. and shoot it. Make sure you keep your reveal
the same all the way down. Now for the top. We’re going to measure outside to
outside. I’ve got 39 1/2 outside
to outside. Run some caulk. Done Alright, so that’s it. Super easy. Now this door
doesn’t look like crap. Well it looks less like crap. We took
this door, built out the jamb a little bit and trimmed it out. Made it look
pretty. If your door does not look like this then you probably did something
wrong. So for Home Mender Inc, this is Dustin. I hope you learned something
today and if you did don’t forget to click subscribe. Thanks for watching

Only registered users can comment.

  1. I am replacing my drywall with a thicker than original 13mm vs 10mm. I assume the original casings will not be useable? As the door and window frames will be original width, will this mean I need to 'step' the back side of the casings in order to fit them with thicker drywall?? Or do I try and build out the jam with a 3mm strip?

  2. This is great info on how to fix a door jam that sticks in (shy) from drywall.  Do you have a video that shows how to fix a door jam that sticks out (proud) from drywall?  That's the situation I have…

  3. Hello,
    How would I fix a gap between my door trim and drywall, which is caused by the drywall being bowed away from the trim? The gap is too large for caulk. It meets the trim at the top and bottom, but there is a gap in the middle.

  4. I've watched about all of your videos and very helpful. Keep up the good work. I wish I had a way of sending pictures about a situation I ran across to see if you could give me some pointers

  5. Thanks for this video. Just the information i need for my situation. Got the stock wood and did it yesterday. Video was a big help..

  6. Hello Home Mender. Thanks for the vid. I have a question. Is it ok for the door jamb to extend beyond the drywall at .3 inches or should the jamb be planed or cut to meet the drywall?

  7. Hey Dustin, what are you using to attach everything there, staples? Is there a good alternative for those who don't have the power tool?

  8. I just straightened out a wonky door but later realized that the wall was also not plumb. The lower portion of the drywall (on one side of the door) sticks out about 3/8 and the top is almost flush with the frame. Again, the door frame is plumb and level.

    Could I just do your technique for the lower portion of the door? Good video. Thanks.

  9. I am having ro do this same thing to my back door. did you flush the 3/4 up to the hinges of did you leave a reveal before installing the casing?

  10. For a rental or newer construction owner occupied, yes … BUT NOT for my 1907 brown shingle … Although this does give me another idea … Thanks!

  11. This is the issue I ran into today after installing my French patio doors. Only thing is the right side is flush, but the door jamb sits about 1/4" behind the drywall. I'm hoping this solution will still work and it won't look bad just doing it on the left side. Thanks for sharing this info.

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