A sticking door is one of the earliest signs that a house has moved a little. It is also one of the most common false alarms. Chula Vista Structural helps homeowners figure out which one they have. If the cause is in the foundation, we fix it, and we coordinate with licensed engineers as needed when the repair calls for it.
Door problem or foundation problem?
Not every sticking door is structural. Before worrying, rule out the simple things:
- Loose hinges. Tighten the screws. A long screw into the frame often fixes a sagging door.
- Swollen wood. Wood doors can swell in humid weather. If every wood door sticks a little on damp days and none are cracked around, humidity may be the cause.
- Paint buildup. Layers of paint on older doors and frames.
- Worn tracks. Sliding doors and windows with dirty or worn rollers.
If a door still sticks after those checks, or if you see some of the signs below, the frame around it may be out of square. That usually means the wall moved.
Signs the house is moving
- The gap around the door is uneven: wide at one top corner and tight at the other
- A diagonal crack runs from a corner of the door or window frame
- Several doors on the same side of the house stick
- The door swings open or closed on its own
- The latch no longer lines up with the strike plate
- Windows that used to slide easily now bind in one corner
- The problem changes with the seasons
That last one is the big clue in Chula Vista.
Why seasons matter on Chula Vista clay
Much of eastern Chula Vista sits on or near the Otay Formation. The California Geological Survey describes bentonite clay beds in it up to about a meter thick. Bentonite soaks up water and swells. In dry months it shrinks.
The soil at the edges of your house gets wetter and drier than the soil under the middle. So as the seasons change, the edges of the slab rise and fall slightly. The wall frames above tilt with them. A door frame that was square in summer can be slightly out of square in winter, and the door rubs. Then it frees up again.
That kind of swing tells us a lot. It usually means the house is responding to moisture, not sinking steadily. The fix is often about water: drainage, downspouts, and irrigation. See foundation drainage and expansive clay.
Chula Vista’s grading code requires expansive soil near the surface in building areas to be removed and replaced, or handled with an engineered design. So many newer homes have a cap of better soil. Clay deeper down can still respond when water changes around the house, especially after landscaping changes, leaks, or a wet winter following a dry stretch.
On older west-side homes
In older raised-floor homes, sticking doors more often come from a floor that has sagged, usually over sinking crawl space posts or a sagging beam. The door does not change much with the seasons. It just slowly gets worse. See uneven floors and raised foundation repair.
What we check
We look at every door and window that sticks and note the pattern. Are they on one side of the house? Near a slope? Near a downspout? We take floor-level readings, look for cracks, and walk the lot to see where water goes. If there is a crawl space, we go under.
The pattern usually points to one of three things: seasonal clay movement, settlement on one side, or sagging supports under a raised floor.
What fixes look like
- Water control for clay movement: grading, downspout extensions, irrigation changes
- Support repair for raised floors: posts, piers, beams
- Settlement repair when one side is dropping: see settlement repair
- Door and window adjustment after the cause is handled
Planing a door to fit in winter often leaves a gap in summer. We suggest waiting until the movement is under control before trimming doors or repairing drywall.
Keep a simple log
If you are not sure, write it down. Note which doors stick and the date, and whether it rained recently. Do it once a month for a year. That record helps us, and it helps you see whether things are getting worse or just cycling.
Common questions
Only one door sticks. Should I worry?
Probably not, if nothing else has changed. Check the hinges first.
The sliding door is hard to open. Is that the foundation?
Often it is the rollers or track. If the frame corners are out of square or there are cracks nearby, it may be movement.
Will fixing drainage make my doors work again?
It can help, over a season or two. Some doors may still need adjusting afterward.
Not sure if it’s structural?
Tell us which doors stick and when it started. We will come look at the pattern.
Sources for local facts
- California Geological Survey, San Diego 30’×60’ Quadrangle pamphlet (Otay Formation bentonite)
- Chula Vista Municipal Code §15.04.055 (expansive soil grading requirements)