In commercial facilities you log every door and window that drifts. The pattern over time tells you whether you have a maintenance issue or a structural one. Same logic works in a house — you just need to start logging.
Why are my doors suddenly not closing right?
Three causes, ranked by likelihood: seasonal humidity expansion of wood doors and frames (cyclic — worse summer/wet, fine in winter/dry), the house settling normally (common at 5 years and 20-25 years), or active foundation movement (uncommon but serious). The pattern across multiple openings matters more than any single door — multiple doors in different rooms drifting together = structural; one door drifting alone = local. Mark the spot where each door rubs today; check again in three months. If the rub moves, it's seasonal. If it stays, it's structural.
What does the misalignment look like, and when did it start?
- How many doors/windows are affected? Just one? A few? Multiple in different rooms?
- What's the pattern? Worse in summer? Worse in winter? Same year-round?
- How long has it been an issue? A few months? Years getting worse?
- What kind of door? Solid wood (most prone to seasonal swell), hollow core, fiberglass, steel?
What changed before the doors and windows started sticking?
- How old is the house? Under 5 years: settling is normal. 20-25 years: secondary settlement is common. Over 50: foundation issues more likely.
- Recent foundation work? Repairs, additions, or excavation near the house?
- Drainage changes? New landscaping, downspout changes, regraded yard?
- Tree work? Removed a large tree near the house (soil expands as root system dies)? Planted one (roots will pull moisture from soil under foundation)?
- Drywall cracks? New ones, getting worse, especially at corners of doors/windows?
What should I check on the house itself?
- Look at every affected door and window. Note exactly where it sticks or won't close.
- Check the hinges. All screws tight? Door sagging in the hinge plates? Hinges level?
- Use a level on the door frame. Top of frame should be level. Sides should be plumb.
- Walk every wall. Look for new drywall cracks at the corners of door and window openings (the textbook structural canary).
- Roll a marble on the floor. A floor that's noticeably out of level used to be level — that's structural movement.
- Check the foundation outside. Visible cracks? Especially stair-step cracks in masonry, or horizontal cracks in concrete?
What's actually causing the misalignment?
| Cause | Likelihood | Severity |
|---|---|---|
| Seasonal humidity expansion | Very common | Cyclical, harmless |
| Sagging hinges / worn hardware | Common | $5 + 10 min DIY |
| Normal house settling | Common in young/middle homes | Cosmetic, stops on its own |
| Foundation movement (active) | Less common | Serious — structural pro |
| Water/drainage issue undermining foundation | Less common | Serious — diagnose drainage first |
Is door or window misalignment a structural emergency?
Seasonal humidity. Live with it. Wood doors swell 1/8" or more with humidity. Planing the door in summer makes it loose in winter. Tighten hinge screws, accept the seasonal cycle.
Settling. Mostly normal. Re-plumb door frames or trim doors slightly. If you see fresh drywall cracks pairing with the door issues — get a foundation inspection to rule out active movement.
Active foundation movement. Independent structural engineer inspection within 30 days. $300-$600. Pay an independent — NOT a foundation repair company. The engineer tells you whether action is needed; foundation companies tend to recommend repair regardless.
How do I fix a sticky door myself?
Tightening hinges (5 minutes, often solves the problem)
- Open the door 90 degrees.
- Tighten every hinge screw — both door side and frame side. Many will be loose.
- If any screw spins freely (stripped wood), remove it. Stuff a couple wooden golf tees or matchsticks with wood glue into the hole. Let cure. Reinstall screw.
- For sagging hinges (door rubs on bottom of latch side): replace the top-hinge screws with 3" structural screws that reach the framing behind the jamb. Free fix that often eliminates the sag.
- Test door close. 80% of "sticking" doors resolve here.
Re-plumbing a frame (1-2 hours, for serious sag)
- Remove door from hinges. Set aside.
- Check frame with level. Note where it's out.
- Loosen or remove casing trim. Insert shims behind frame to re-plumb. Re-secure.
- Re-hang door. Test. If door still sticks after frame is plumb, the door itself needs planing (last resort).
What needs a pro
- Any suspected foundation movement.
- Drywall cracks at multiple door/window openings.
- Floors visibly out of level.
- Foundation cracks (interior or exterior).
What tools and parts do I need?
- 3" structural wood screws (box) — for the hinge-reinforcement trick. ~$10.
- Composite shims (pack) — for re-plumbing frames. Don't kink like wood shims. ~$8.
- 4-foot level — checks plumb and level on frames and floors. ~$30.
- Indoor hygrometer — track humidity over seasons. Helps confirm seasonal vs structural diagnosis. ~$15.
- Crack monitor gauge — sticks to wall over a crack, measures movement over months. Critical evidence for structural decisions. ~$15.
When should I call a pro?
- Multiple doors/windows misalign together
- New drywall cracks at openings, especially diagonal, especially wider than a credit card
- Floors are visibly out of level
- Foundation cracks visible
- You're thinking about selling — disclosure is required, and an engineer's letter is worth its weight
- Get a structural engineer inspection — independent, not a foundation repair company first.
Will the sticking come back next season?
- After hinge tightening: 80% of cases resolve. Annual hinge tightening is a 10-minute task — make it part of fall checklist.
- Seasonal acceptance: the cycle is harmless. Reduce indoor humidity in summer (40-50% target) and you'll see less swing.
- After re-plumbing frame: permanent fix for non-structural movement.
- After foundation work: depends entirely on the cause. Drainage fixes are durable. Underpinning is durable but expensive. Cosmetic repairs over an unaddressed foundation move just waste money.
FAQ
Why are my doors suddenly not closing right?
Three causes: seasonal humidity expansion of wood doors and frames (cyclical), the house settling normally (common at 5 and 20-25 years), or actual foundation movement (uncommon but serious). The pattern across multiple openings matters more than any single door.
How do I tell seasonal sticking from real structural problems?
Seasonal sticking moves predictably with humidity; structural movement is one-way and accumulates over years. New diagonal cracks at corners of doors/windows + floors out of level = structural. Cyclic without those = seasonal.
When is door misalignment a foundation problem?
When multiple doors and windows in different rooms develop misalignment together AND you see cracks in drywall at the corners of openings AND floors are visibly out of level. A pro foundation inspection is $300-$600.
Can I fix a sticking door myself?
Yes, almost always. Three common DIY fixes: tighten hinge screws, shim a sagging hinge, plane down the high spot. For seasonal sticking, fix the hinges first — planing makes the door loose in dry months.
What about cracks in drywall around door frames?
Hairline diagonal cracks at upper corners of openings are the textbook structural canary. New cracks wider than a credit card, especially at multiple openings = call a structural engineer.
How much does a foundation inspection cost?
Independent structural engineer: $300-$600. Always pay for the independent engineer first — never let a foundation repair company give you the only assessment. They have a sales bias.
Can a single sticky door mean foundation problems?
Almost never. A single isolated sticky door is overwhelmingly a hinge or seasonal issue. Foundation movement shows up as a pattern across multiple openings — usually 3 or more doors and windows misaligning together. Don't pay for an engineer's inspection for one squeaky door.
Should I keep using a door that won't latch?
Functionally yes — a door that won't latch isn't dangerous in itself. Diagnostically: take a photo of where it rubs, date the photo, and check again in three months. The photo is your baseline. If the rub spot has moved, it's seasonal. If it's the same but worse, the frame or the house has actually shifted.