I have an exterior door with a large gap to the strike-side jamb. When closed I can see a 1/4" inch gap from top to bottom. Fortunately the dead bolt works but the latch bold is just hanging in there. It's as basement door and I am need to fix it before casing it.

I was thinking of adding 1/4" strip on strike plate side to make jamb smaller but not sure if that right way to do it. Try to search on line but was not able to find answer for my specific issue.

Also, thinking about weather strip that I may need to take out and replace it back on top of new 1/4" strip and what about outer side. Do I need to add the strip on outer side too?

  • 4
    I would be adjusting the jamb. Remove the trim, get some shims in there if you need to cut down the top and bottom and put things back together do it. I normally use 5 shim points. One at top, bottom and strike plate, then split the difference between the strike plate. If you don’t like the shins because of security issues there are heavy duty strike plates designed for impact. (Then the door fails at the bolt).
    – Ed Beal
    Mar 30, 2020 at 21:01
  • 2
    I'm really curious how this happened in the first place. Was the door and frame custom put together on site? Is the door reused and maybe undersized for some reason for the original installation, perhaps to fit a smaller custom frame?
    – Ack
    Mar 30, 2020 at 21:41
  • 1
    Ack- surprisingly its was installed like this by builder in a new home 10 years ago. When I moved in I noticed it but ignored it due to some other major issue and thought will fix it when I'll finish the basement.
    – alflashy
    Mar 31, 2020 at 0:43
  • Ed - your option looks like I have to remove the door Jamb and reinstall it and I don't think I can do it by my self. I need to hire professional to do.
    – alflashy
    Mar 31, 2020 at 0:48
  • I would have to see pictures but I have installed custom solid trim perpendicular to meet depth. If done right this is barely noticeable and looks good. Obviously you do this on the inside of the house. You should push jam out to meet exterior wall.
    – DMoore
    Jun 6, 2020 at 18:21

1 Answer 1


Unless I am mis-understanding what you are calling the door jamb. The door jamb is the vertical strip nailed to the door casing to provide the door stop when closing. It would be easy to replace the jamb with a thicker piece one (about 3/8" thicker). I would not shim the jamb.

Weatherstrip is normally added on the exterior side of the door.

  • 1
    I believe that you are the one with misused terminology. Casing is trim on the wall. The jamb wraps the opening. The stop (you guessed it) stops the door swing. In any event, thickening the stop will not help with the latch reach issue.
    – isherwood
    Oct 5, 2020 at 19:36

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