How to install window casing when the drywall and jamb are uneven.. Door casing and uneven drywall. i would want the casing and wall to be plumb. i might try drywall filler if the wall was way out but a fine bead of silicone in the corner where the two meet would be an option as well 03-24-2009, 08:01 pm. Having uneven walls around window casing is a pain as i know the can cause your joints to appear gappy or the trim corners to be concaved/convexed sometimes you will have to adjust your miters to a 44.5 deg, 45.5 deg, 46 deg, etc to acheive a tight fit when this happens..
Door casings and uneven walls the best way i can describe it is i have the top and bottom of one of the vertical door casings flush with the wall but there is a cup in the wall that cups inward about 1/4" at the center of the casing so the door jamb is 1/4" proud of the wall at the center.. This casing is wider than the space between the door and the wall, so the casing needs to be cut. that cut will need to fit tightly against an uneven wall. solution: step 1 – scribe a line on the casing. While preparing a door frame for casing, we notice the drywall is not flush with the door frame. the drywall is shaved to allow the casing to sit flat on the wall and on the frame..
