A door that dragged all spring and suddenly will not latch in July is telling you something specific. Phoenix gets two moves a year: the dry heat that shrinks everything from March through June, then monsoon humidity that puts moisture back into wood jambs and casing. Interior doors ride that swing, and so do the screws holding them up.
Open the door halfway and lift the handle. If the gap at the top hinge closes up when you lift, it is hinge sag, and the fix is a longer screw, not a plane. If it does not move, mark where the door touches. Rubbing along the latch edge near the top usually means sag too. Rubbing evenly along the whole latch edge means the jamb swelled. Rubbing nowhere but still no latch means the strike plate moved.
Four things that cause it
Nearly every stuck interior door in a Valley house is one of these four, and they fail in very different ways. Getting the cause right matters because three of them are reversible in under an hour and one of them means the door gets replaced.
Hinge sag
The most common by a wide margin. Factory hinge screws are often three quarters of an inch long, which means they only bite the jamb, not the framing behind it. Over a few years of slamming, the top hinge pulls forward a hair and the whole slab rotates. The door then catches on the latch side near the top corner.
The repair is to swap the two center screws in the top hinge for three inch screws that reach the stud. The door usually lifts back into square as you drive them. No sanding, no repaint.
Jamb swell
Bathrooms, laundry rooms, and any door near an evaporative cooler pick up moisture in July and August. Pine jambs swell across the grain, the opening gets narrower, and the door binds evenly down the latch side. It often frees itself by October.
If it binds badly enough to be a daily problem, the fix is to relieve the edge slightly and seal the bare wood so it stops taking on water. Taking off too much is the risk here: a door planed in August rattles in the opening by February.
Strike plate drift
The door swings freely, closes to the jamb, and the latch will not catch. Look at the strike plate for a shiny scrape above or below the hole. That scrape tells you which direction the latch is now hitting. Moving the plate a sixteenth of an inch, or filing the opening slightly, fixes it. Houses that have settled since the last repaint often need this on three or four doors at once.
Slab warp
Real warp is rare indoors and common on west facing exterior doors that take afternoon sun on one side and conditioned air on the other. That same exposure is what breaks down the finish on a west facing door. Hold a straightedge against the door face diagonally. If the middle stands off the edge by more than an eighth of an inch, the slab is twisted and adjustment will not hold. That is a replacement conversation, not a repair.
The five minute check
Run this in order before you call anyone. It tells you which of the four you have, and it is the same sequence a handyman runs on arrival.
- Close the door slowly and watch where it first touches. Mark that spot with a pencil.
- Open it halfway and lift the handle. Watch the gap at the top hinge.
- Look at the top hinge screws. Standing proud of the plate means they have pulled.
- Check the strike plate for a bright scrape, and note whether it is above or below the hole.
- Run a straightedge diagonally across the door face and look for daylight in the middle.
- Do the same check on two other doors in the house. A whole house pattern points at settling, not at one bad door.
| What you see | Likely cause | Typical repair |
|---|---|---|
| Catches at the top latch corner | Hinge sag | Long screws into the stud at the top hinge |
| Tight the whole length of the latch edge, worse in July | Jamb swell | Relieve the edge lightly, seal the bare wood |
| Closes flush but will not latch | Strike plate drift | Reposition or file the strike plate |
| Rocks when closed, gap changes top to bottom | Slab warp | Replace the slab, adjustment will not hold |
| Cracks at the upper corner of the casing | Movement in the opening | Repair the drywall after the door is squared, not before |
What might get referred out
Door work usually sits inside handyman scope, and most of what is on this page is an hour of adjustment. A couple of situations may turn out differently once someone is standing in front of the door.
If the opening itself has moved, meaning the header looks to be sagging or there are stair step cracks in block or stucco outside the same corner, the cause might be structural, and a structural cause would go to a licensed specialty contractor. Fire rated doors in an attached garage may also be handled differently, since the assembly has to stay rated. Neither call can be made from a description or a photo. The handyman decides once they can inspect the door and the wall around it, and tells you before any work starts.
Everything else, hanging a new slab, rehanging a door that was removed for flooring, adjusting closers, moving strike plates, replacing knobs and deadbolts, is generally standard work under the Arizona handyman exemption.
Exterior doors and weatherstripping
Exterior doors fail differently. The slab is usually steel or fiberglass over a foam core, so it does not swell, but the weatherstripping compresses and the threshold sweep flattens out in the heat. A door that sticks at the bottom in August is often riding a threshold that was adjusted up in winter to stop a draft.
Most exterior thresholds have four adjustment screws hidden under the sill cap. Backing them off a quarter turn at a time, checking after each, solves a dragging door without touching the slab. If you can see daylight at the top corner while the bottom drags, the frame is racked and adjustment is only a temporary measure.
When to stop working on it
There is a point where a stuck door stops being a fifteen minute fix and starts costing you a door.
- Stop planing once you have taken off more than an eighth of an inch. Past that, you are chasing a seasonal problem with a permanent cut.
- Stop shimming hinges if the door needs a different shim at the top than the bottom. That is a racked frame.
- Stop entirely if the door is in a load bearing wall that has new cracking above it.
If you would rather hand it off, tell us what the door is doing and which of the checks above it failed. That detail goes to the handyman with the request, so they arrive knowing whether they are bringing screws or a new slab.
Related notes: which cracks are cosmetic and what hard water does to fixtures.
Where this comes up: doors caught mid turnover on a rental in Tempe, west facing entries across central and north Phoenix, and doors on the older stock from Dobson Ranch to the citrus streets in Mesa.
Questions
Will the door fix itself when the humidity drops?
A swollen jamb usually does, by around October. Hinge sag and strike plate drift do not. They get worse, because every close from now on is pulling on screws that are already loose.
Is it worth fixing one door, or should I do the whole house?
If two or more doors started sticking in the same season, doing them in one visit is the practical call. The checks and the tools are identical, and most of the time is setup rather than the repair itself.
Can a handyman replace an exterior door?
Usually yes. Replacing a slab or a pre hung unit in an existing opening is standard handyman work. Cutting a new opening, or widening an existing one in a bearing wall, may be a different matter, and the handyman will say so on inspection if it needs a licensed specialty contractor.
What should I include when I send a request?
Which door, what it is doing, and which of the five checks it failed. A photo of the top hinge and one of the strike plate covers most of what anyone would ask you on the phone.