Every autumn, somewhere around the first hard frost, a certain kind of call starts coming in. The front door that closed perfectly all summer now needs a shoulder. Or the opposite: the door swings shut too easily and the deadbolt no longer lines up with the strike. Nothing was dropped, nothing was hit, and nobody touched the hardware. The weather changed, and the door moved with it.

Doors Move Because Buildings Move

A door is not a sealed unit floating in a wall. It is a slab hung in a frame, which is fastened to rough framing, which sits on a foundation. Every one of those layers responds to temperature and humidity, and they do not respond at the same rate or in the same direction.

In a Toronto winter the swing is extreme. Interior air goes dry once the furnace runs, while the exterior face of the same door sits near freezing. Wood gives up moisture and shrinks on the warm side. Steel and aluminum contract in the cold. The frame itself can shift slightly as the ground around the foundation freezes and heaves.

None of that is a defect. The question worth asking is whether the movement is seasonal and harmless or whether it is showing you something that was already marginal.

Where the Binding Usually Shows Up

The location of the rub is the most useful clue you have, and it costs nothing to look.

• Top corner on the latch side. The classic sign of hinge sag or a frame that has racked slightly. Very common on heavy slabs.
• Bottom of the slab against the threshold. Often an adjustable threshold that was set for summer, or a sill that has lifted.
• Along the full latch edge. Usually swelling in a wood door, or weatherstripping that has stiffened in the cold and stopped compressing.
• Hinge side rubbing. Less common and more telling. Screws have usually backed out, or the hinge mortise is crushed.
• Nothing rubs but the bolt will not throw. The slab is fine. The frame has moved relative to the strike, which is a pure alignment issue.

Seasonal Movement vs. an Actual Problem

The distinction matters because one needs an adjustment and the other needs a repair.

Seasonal movement is symmetrical and repeatable. It appears when the weather turns, it eases when the weather turns back, and the gap around the slab stays roughly even. A door like this usually wants a hinge shimmed, a strike moved a couple of millimetres, or a threshold turned down.

A real problem does not reverse. The reveal, meaning the gap between slab and frame, is visibly wider at one end than the other. The door got worse each year rather than returning to normal each spring. You can see daylight at a corner. There is softness in the frame when you press it, or rust blooming at the bottom of a steel frame. At that point the frame or the sill is the thing being asked to do a job it can no longer do, and door frame repair is the part that actually fixes it. Planing the slab will buy a season and make the gap permanent.

The Draft Question

Sticking and drafts are usually the same story told twice. A door that binds at the top is often standing proud at the bottom, which is exactly where cold air comes in. Homeowners tend to respond by adding more weatherstripping, which increases the pressure the latch has to overcome and makes the binding worse.

The order that works is the reverse: get the slab sitting square in the frame first, then seal the gap that is left. Sealing a misaligned door just hides the misalignment while making it harder to close.

What Can Be Adjusted and What Cannot

Some of this is genuinely within reach of a careful homeowner, and it is worth knowing where that line sits.

Reasonable to try. Tightening hinge screws is the first move and fixes a surprising share of complaints. If a screw spins without biting, the hole is stripped. Replacing one screw per hinge with a longer screw that reaches the framing behind the jamb will often pull a sagging door back into line. Adjustable thresholds can usually be raised or lowered with a screwdriver.

Worth more care. Moving a strike plate is straightforward but unforgiving. Move it too far and you end up with an oversized mortise and a bolt that rattles. Shimming a hinge, which means placing thin cardboard or metal behind one leaf to change the slab’s angle, works well but changes the geometry of the whole door, so small increments matter.

Leave alone. Planing or sanding the slab. It is the most tempting fix and the one that causes the most regret, because it is permanent and the door will shrink again in spring, leaving a gap that never closes. On a steel or fibreglass door, cutting into the skin exposes the core to moisture and effectively ends the door’s life. Also leave multi-point locks alone, since the rods and gearbox are linked and a forced adjustment usually breaks something expensive.

When It Is Not Seasonal At All

A few signs point away from weather entirely and are worth taking seriously in older Toronto housing stock. Cracks appearing in the drywall above the door corners, a door that has gone out of square at the same time as a nearby window, or a frame that moves when the door slams all point to structural movement rather than humidity. Water staining at the base of the jamb points to a drainage problem that will keep rotting the frame no matter how often the door is adjusted. In those cases the door is the symptom, and starting with a proper look at the door and frame together is more useful than adjusting hardware twice a year.

Frequently Asked Questions

Will the sticking go away on its own in spring?

If it is genuinely seasonal, usually yes. That is the test. Note where it rubs now and check the same spot after the weather turns. A door that returns to normal wants a small adjustment. A door that stays bad has a frame or hinge issue.

Why does the deadbolt miss when the door closes fine?

Because the slab and the frame moved by different amounts. The bolt is rigid and the strike opening is only a few millimetres wider than the bolt, so a very small shift is enough to catch. This is usually the easiest of all these problems to correct.

Is a sticking door a security problem?

It can be. If you are pulling the door toward you to get the bolt to throw, the bolt is probably not fully extended into the strike when locked. A bolt that engages only partway offers far less resistance than one seated properly.

Should I replace the door instead of adjusting it?

Rarely, if the slab itself is sound. Most seasonal complaints are hardware and alignment, not the door. Replacement becomes the better answer when the frame is rotted or rusted through, when the slab is delaminating, or when the opening has gone noticeably out of square. If you are weighing it, look at the frame and sill rather than the face of the door, since that is where the real condition shows. A straightforward assessment from someone doing door repair in Toronto will usually settle it quickly.

The Short Version

A front door that starts sticking with the first frost is usually telling you something ordinary: the building moved and the hardware no longer matches. Find where it rubs, tighten the hinges, and check whether the reveal is still even. If it evens out when the weather does, adjust it. If the gap is uneven and getting worse every year, the frame is the problem, and no amount of planing the door will fix a frame.