A door that won’t latch is one of those things you stop noticing after a while. You just lift the handle a little, or give it an extra push, and move on. But it doesn’t go away on its own, and come inspection time, an inspector will try every door in the house.
The good news is that most latching problems have one of two causes. Both are fixable without heavy tools.
Start With the Hinges
Open the door and look at the hinges. Each leaf is held to the doorframe and the door itself with screws. Over time, especially on a door that gets used a lot, those screws work loose. When the top hinge lets go even a little, the whole door drops at the latch side. It doesn’t take much. A millimeter or two is enough to put the latch bolt right past the strike plate hole.
Try this first. Close the door partway and try to wiggle it. If there’s play, check each hinge screw with a screwdriver. Tighten anything that moves.
Here’s where a lot of people get stuck. The screw goes in, turns freely, and doesn’t grab. The hole is stripped. That’s not a reason to give up on the screw location. Take the screw out completely. Stuff the hole with wooden toothpicks and a little wood glue. Let it dry, trim the toothpicks flush, and drive the screw back in. It’ll grab. That fix holds up for years.
If the hinge itself is bent or one of the knuckles is damaged, replace the hinge. Bring the old one to the hardware store so you get the same size. Swapping a hinge is a straightforward job.
Check the Strike Plate Next
If the hinges are solid and the door still won’t latch, look at the strike plate. That’s the metal piece on the doorframe that the latch bolt slides into. Close the door slowly and watch where the latch bolt actually hits. Is it catching the top lip of the hole? The bottom? Barely making contact at all?
A quick way to check is to put a little lipstick or a dark marker on the end of the latch bolt, then close the door gently. Open it and look at the strike plate. The mark tells you exactly where the bolt is landing.
If it’s off by a small amount, you can file the strike plate opening a little wider with a metal file. Go slow. Take a little, test the door, take a little more. That works well when the bolt is just barely not dropping in.
If it’s off by more than that, the strike plate may need to move. Loosen the screws, shift the plate up or down, and mark the new screw locations. You’ll need to chisel the mortise slightly to match the new position, or fill the old mortise with wood filler and cut a new one. It sounds fussier than it is, but it does take patience.
New Hampshire homes move seasonally. The humidity in July does real things to door frames. A door that latches fine in January might fight you all summer. If your door only misbehaves in warm months and then corrects itself, that’s almost always seasonal wood movement rather than a structural problem. The fixes above still apply, but you may want to wait until the door is at its worst before you adjust the strike plate, otherwise you’ll overcorrect.
When to Stop and Call Someone
Here’s where to put down the tools. If you look at a door and the frame itself is racked, meaning the opening is no longer square and there are gaps at the corners, that’s a bigger conversation. Could be foundation settling, could be a header issue. A contractor should look at it.
If the door itself is twisted or badly warped, planing is not the first move. Especially in a house built before 1978. Sanding or scraping painted surfaces in older homes is work we don’t take on, and you shouldn’t either without knowing what’s in that paint. A licensed professional with the right certifications handles that.
Don’t force a door that’s binding hard. Forcing it stresses the frame and can split the wood around the strike plate mortise, which turns a simple fix into a more involved one.
A Door That Closes Is Worth the Fifteen Minutes
A door that latches properly keeps a room quieter, holds heat where it belongs, and gives every person who walks through your home one less small frustration. It’s also the kind of thing an inspector notes, because a door that doesn’t close is a door with a problem. Getting ahead of it is easy. If you’d rather have someone handle it along with a few other items on your list, we’re happy to help.
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