Door drags at the top latch corner
The top outer corner scrapes the frame or you have to shove the door the last inch.
Start here: Check hinge screws and hinge-side sag before assuming the slab needs trimming.
Door sticking and binding
Door Swells in Summer
Direct answer: A door that swells in summer is usually rubbing because humidity made the slab grow a little, or because loose hinges let the door sag just enough to bind. Start by finding the exact rub point before you sand, plane, or replace anything.
Most likely: The most likely cause is a wood door or wood-edged door taking on moisture and getting tight at the top latch side or along the latch edge. Loose hinge screws are the next thing to rule out because they can look almost the same from the hallway.
Open and close the door slowly and pay attention to where it drags: top corner, latch edge, bottom edge, or only when the latch enters the strike. That pattern tells you whether you have seasonal swelling, hinge sag, hardware misalignment, or a moisture problem that needs more than a trim fix. Reality check: a wood door can move enough in humid weather to stick even when nothing is technically broken. Common wrong move: sanding the latch edge before checking the top hinge screws.
Don’t start with: Do not start by cutting the door, replacing the whole door, or forcing the latch harder. That often turns a seasonal fit issue into a permanent gap problem.
Only sticks in humid months?Look for rub marks on the top latch corner and latch edge first.
Sticks even with the latch held back?Treat it as a fit or hinge problem, not a lock problem.
Last reviewed: 2026-04-06
What the sticking feels like
Door is tight along the latch edge
The door closes but rubs down the latch side, especially on humid days.
Start here: Look for fresh paint rub or shiny wood on the latch edge and jamb stop.
Latch hits or misses the strike plate
The door slab swings mostly fine, but the latch catches low, high, or hard against the strike.
Start here: Separate hardware alignment from slab swelling by closing it with the latch held back.
Bottom edge or threshold rubs
You hear scraping at the floor or threshold, often worse after weather changes.
Start here: Check for hinge sag, loose screws, or floor movement before trimming the bottom of the door.
Most likely causes
1. Seasonal wood swelling in the door slab
This is common on solid wood doors and wood-edged doors when indoor humidity rises. The door gets just big enough to bind at one edge or corner.
Quick check: Look for fresh rub marks, shiny spots, or compressed paint where the door touches the jamb or stop.
2. Loose or worn door hinges letting the slab sag
A sagging door often rubs at the top latch corner and can feel worse in summer because the fit is already tight.
Quick check: Lift up gently on the knob side with the door partly open. If you feel play, inspect the top hinge screws first.
3. Strike plate or latch alignment drift
Sometimes the slab is not actually swollen much; the latch is just hitting the strike because the door shifted slightly.
Quick check: Close the door with the latch held back. If the slab swings into place but the latch still fights, focus on alignment.
4. Moisture exposure at one edge or face of the door
A door near a wet entry, unsealed edge, or repeated rain splash can swell unevenly and stay tight longer than a normal seasonal swing.
Quick check: Check for a damp bottom edge, finish failure, darkened wood, or swelling concentrated near one corner.
Step-by-step fix
Step 1: Find the exact rub point before changing anything
You need to know whether the slab is rubbing, the hinges are sagging, or the latch is just out of line. Those fixes are different.
- Open and close the door slowly with good light on the jamb and door edges.
- Look for fresh scuffs, shiny paint rub, compressed weatherstripping, or bare wood at the contact point.
- Repeat the close with the latch held back so the latch does not enter the strike plate.
- If the marks are hard to see, place a strip of painter's tape on the jamb stop where you suspect contact and close the door once.
Next move: If you clearly find one rub area, move to the matching fix path in the next steps. If you cannot tell where it binds, the fit may be changing under load from loose hinges or frame movement. Check the hinges next.
What to conclude: A door that sticks with the latch held back is a fit problem. A door that swings shut fine until the latch reaches the strike is mostly a latch alignment problem.
Stop if:
- The door is so tight you have to shoulder it closed.
- The frame or trim is cracked or moving.
- You see active water intrusion, rot, or a soft jamb.
Step 2: Tighten and inspect the hinges first
Loose top hinge screws are one of the most common reasons a summer-sticky door rubs at the top latch corner. This is the fastest low-risk fix.
- With the door closed, check whether the reveal gap is tighter at the top latch side than at the hinge side.
- Open the door and tighten all visible hinge screws, starting with the top hinge on the door and frame side.
- Replace any stripped short screw at the top hinge with a longer door hinge screw that can bite solid framing, if the hole will not hold.
- Close the door again and watch whether the top latch corner lifts away from the jamb.
Next move: If the rub eases or disappears, the door was sagging more than swelling. Keep using it and recheck the screws after a few days. If the door still binds in the same place and the hinges are solid, move on to separating slab swelling from latch-only misalignment.
What to conclude: A change after tightening points to hinge sag. No change points more toward seasonal expansion, a shifted strike, or moisture-related swelling.
Step 3: Separate latch trouble from slab swelling
A lot of people call it swelling when the real problem is the latch hitting the strike plate after the door shifts a little.
- Close the door slowly with the latch held back by hand so it cannot catch the strike plate.
- If the slab seats into the opening without rubbing much, inspect the strike plate for fresh scrape marks above or below the latch opening.
- Check whether the latch hits high, low, or sideways against the strike opening.
- Tighten the strike plate screws and see whether slight movement in the plate solves the catch.
Next move: If the door closes cleanly with the latch held back and only the latch was hanging up, you are dealing with hardware alignment, not major slab swelling. If the slab itself still rubs before it reaches the stop, keep treating it as a fit issue and inspect for moisture and edge swelling.
Step 4: Check for moisture-related swelling and decide whether to wait, seal, or trim
A normal seasonal swell can often be managed with humidity control and minor correction. A wet door edge or failed finish needs attention before any trimming.
- Inspect the top, bottom, and latch edge of the door for bare wood, peeling finish, dark staining, or a damp feel.
- For an exterior door, check whether rain hits the door directly, the sweep is trapping water, or the threshold area stays wet.
- For an interior door, think about nearby humidity sources like bathrooms, laundry rooms, or a damp basement.
- If the door is only slightly tight and the weather just turned humid, give it a little time after drying the area and lowering indoor humidity if possible.
- If one edge is clearly swollen and the finish is failed, plan to correct the fit only after the door is dry and the source of moisture is addressed.
Next move: If the sticking eases as the door dries out, you likely have seasonal movement or moisture exposure rather than a major alignment failure. If the door stays tight after drying conditions improve and the rub point is consistent, a small fit correction or hardware replacement is the next move.
Step 5: Make the least-destructive repair that matches the rub pattern
Once you know the pattern, you can fix the actual cause instead of over-cutting the door or chasing the lock.
- If tightening the top hinge changed the fit but did not fully solve it, replace stripped or weak top hinge screws and retest.
- If the latch alone is catching, adjust or replace the door strike plate only enough to let the latch enter cleanly.
- If weatherstripping is bunched, hardened, or pushing the door back out of alignment, replace the door weatherstripping and retest before trimming wood.
- If the slab still rubs after hinge and latch corrections and the door is dry, mark the exact contact area and remove only the minimum material needed from the rubbing edge, then reseal any exposed wood immediately.
- If the door is badly swollen, twisted, or repeatedly wet, stop short of aggressive trimming and bring in a carpenter to evaluate the door and opening.
A good result: The door should swing freely, latch without a shove, and keep an even-looking gap around the slab.
If not: If it still binds after hinge correction, strike adjustment, and a careful fit check, the opening or door may be out of shape enough to need pro fitting or replacement.
What to conclude: A small targeted repair usually solves seasonal sticking. A door that keeps changing shape or needs major material removal usually has a moisture or structural issue behind it.
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FAQ
Why does my door only stick in summer?
Higher humidity makes wood and wood-edged doors absorb moisture and grow slightly. A door that fit fine in dry weather can start rubbing once that extra movement shows up.
Should I sand the door right away?
Usually no. Check the top hinge screws and latch alignment first. A sagging door can mimic swelling, and sanding before you confirm the rub point can leave you with a loose gap in dry weather.
How do I tell if it is the latch or the door slab?
Close the door with the latch held back. If the slab swings into place but the latch catches at the strike, it is mostly a hardware alignment issue. If the slab still rubs, the fit is too tight somewhere.
Can weatherstripping make a door feel swollen?
Yes. Old or bunched weatherstripping can push the door back out and make closing feel heavy, especially on exterior doors. Check for compressed, folded, or hardened sections before trimming wood.
When is a sticky summer door a moisture problem instead of normal seasonal movement?
Treat it as a moisture problem when one edge stays damp, the finish is failing, the bottom is swelling repeatedly, or the jamb and threshold show water damage. In that case, fix the water exposure before changing the fit much.
Do I need to replace the whole door if it swells every year?
Not usually. Many doors just need hinge correction, a small strike adjustment, fresh weatherstripping, or a careful minor fit correction after drying. Whole door replacement makes sense only when the slab is badly warped, damaged, or repeatedly taking on water.