What it usually means, the likely causes in order, what to safely try first, what a pro charges in Canada, and when to stop and call one.
This guide covers the common cases. Describe your exact problem and get a personalized diagnosis — free to start, with a DIY vs. call-a-pro verdict and a real cost estimate.
A window or door that will not open, close, or lock properly is the house telling you something has moved: a warped frame, a misaligned track or rollers, swollen wood, failed operating hardware, or a house shift that has taken a square opening slightly out of square. The pattern is the diagnosis. A unit that binds seasonally is usually swelling or shrinkage; one that scraped suddenly after years of smooth use suggests movement or hardware failure; a sliding door that needs lifting to move is telling you about its rollers. Forcing a stuck unit rarely frees it and often breaks the hardware that was still working, so diagnosis comes before muscle.
A window or door that cannot close or lock is a security and weather problem and should be dealt with promptly, the same day if an exterior unit will not secure the home. A unit that is merely stiff, or a secondary window that sticks but stays closed, can be scheduled normally. Move faster in heating season if a window is stuck open or cannot latch against the cold, and treat any door that must be forced as a near-term fix, because the forcing itself accelerates frame and hardware damage with every use.
Wood absorbs moisture and swells, and frames can warp permanently with age and sun. The classic signature is seasonal: fine in winter, binding in humid summer, or the reverse for shrunken, loose fits. Paint built up over many coats on the meeting edges adds its own thickness and can glue a rarely opened window shut entirely.
Sliding doors and windows depend on rollers that flatten, corrode, and clog with grit, while double-hung windows depend on balances or cords that fail with age. A slider that rumbles, tilts, or needs lifting has roller trouble; a sash that will not stay up or drops has lost its balance mechanism, not its frame.
Casement window cranks strip, hinges bend and loosen, latches and keepers wear until they no longer draw the sash closed. If the sash itself sits straight but the handle spins, the casement will not pull in, or the lock will not engage, suspect the hardware set rather than the frame, which is generally the simpler repair.
Houses settle, and a opening that racks slightly makes a door or window bind at one corner while gapping at the opposite one. Diagonal cracks in the wall nearby, several units on one side of the house misbehaving together, or a door that began binding without a seasonal pattern all point to movement rather than to the unit alone.
| Job size | Typical estimate (CAD) |
|---|---|
| Simple fix — the straightforward version of this repair | $100–$300 |
| Major job — complex, hidden, or replacement-level work | $300–$900 |
Estimates only, calibrated to Greater Toronto Area trade rates and adjusted by region on this site — not a quote. Your exact price depends on the cause, parts, and access. A personalized diagnosis narrows this range using your specific symptom.
Cleaning tracks, tightening hardware, and freeing a lightly painted-shut interior window are fair homeowner work. Call a pro when a frame is warped or racked, when rollers, balances, or crank operators need replacement, when a sliding door must come off its track, or when several units suggest building movement worth assessing. A pro brings the shims, replacement hardware, and judgement to correct the fit rather than trimming material off a door or sash that a later season will make loose, which is the classic DIY error on seasonal binding.
Humidity. Wooden doors and frames absorb moisture in summer and swell, then shrink back in dry winter air, so the clearance that is generous in January disappears in July. The correct fix respects the cycle: adjust hardware, strike position, or clearances so the door works at its summer size without rattling at its winter size. Planing a door aggressively in August guarantees a drafty, loose door in January.
Almost always the rollers at the bottom of the moving panel. They carry the full weight of a heavy glass panel, and they flatten, corrode, and fill with grit until the door is effectively dragging on the track. Cleaning helps if grit is the whole story, but a door that has dropped and rocks usually needs its rollers replaced and height adjusted, which means lifting the panel off the track, a two-person professional-paced job.
Treat it as a hazard, yes, especially with children in the home: a heavy sash whose balance or cord has failed can drop suddenly and without warning. Prop it securely in the meantime with a solid support rather than a book that can be knocked away, keep hands out of the fall path, and have the balance, cord, or spring mechanism replaced. The frame and glass are usually fine; it is the counterweight system that has let go.
Yes. A door needs only a few millimetres of racking in its opening to bind at one corner and gap at another, and normal settlement over years can supply exactly that. Clues include a diagonal crack near the frame, other doors on the same side of the house changing behaviour, and a latch that no longer meets its strike. The repair adjusts the door and frame to the opening as it is now, which a carpenter or door specialist does routinely.
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