Why Won’t My Door Close Properly?

A door that will not close properly is annoying every single time you use it — and it is rarely just one thing being slightly off. The cause is almost always a small mechanical problem: a hinge that has loosened, a slab that has swollen, a frame that has shifted, or a latch that no longer lines up with its strike. The key to fixing it is to read the symptom carefully, because where and how the door fails points straight to the cause.

Start by watching how it fails

Close the door slowly and pay attention to exactly where it stops cooperating. Each failure mode tells a different story:

• It drags on the floor or threshold → the door has dropped, almost always sagging hinges.
• It hits the frame at the top corner → the door has swollen or the frame has shifted out of square.
• It closes but springs back open → the latch is not engaging the strike plate hole.
• It latches only if you lift or shove it → the latch and strike are misaligned by the door's sag.
• It will not close in summer but was fine in winter → the slab is swelling with humidity.

The usual suspects

Loose or sagging hinges. This is the number-one cause. Hinges carry the door's entire weight, and over years of use their screws loosen — especially the ones in the top hinge, which bears the most load. As the door sags, the latch side drops, the bottom corner starts to drag, and the latch no longer lines up with the strike. The fix is often as simple as tightening the screws; if they spin freely in stripped holes, replacing one screw per hinge with a longer one that bites into the wall framing pulls the door back up.

A swollen slab. Wood doors absorb moisture from humid air and expand. In an Ottawa summer a door can swell just enough to bind against the frame, usually at the latch edge or top corner. This kind of sticking comes and goes with the seasons — which is the clue that humidity, not hardware, is the cause.

A shifted or out-of-square frame. As a house settles and the ground heaves through freeze-thaw cycles, the frame can rack slightly out of square and start pinching the door. If the gap between door and frame is uneven — tight in one corner, wide in another — suspect the frame.

A misaligned strike plate. Sometimes the door is fine but the strike — the metal plate the latch enters — has moved relative to the latch, or was never quite right. If the door closes flush but will not catch, the latch is missing the hole. Adjusting or repositioning the strike so the latch drops cleanly into it is a quick fix.

Paint and debris buildup. Years of repainting can build up enough thickness on the door edge or in the frame rebate to keep the door from seating. Layers of old paint, or grit packed into the hinge and latch areas, can be just enough to stop a door closing.

Weatherstripping that's too thick or misplaced. Occasionally the problem is the opposite of a draft: new or doubled-up weatherstripping holds the door off the frame so the latch cannot reach. The seal needs to be the right profile, fitted so the door still closes against it.

What you can try, and when to call

Tightening hinge screws is the first thing to try, and it solves a surprising share of cases. Cleaning paint or debris out of the hinge and latch areas is worth a look too. Beyond that, be cautious: planing or sanding a swollen door that will shrink again in winter can leave you with a permanently drafty gap, and chasing a misaligned latch by gouging the strike rarely ends well. If tightening the hinges does not fix it, if the gaps are uneven, if the door has to be forced to latch, or if the frame has clearly moved, it is time for a professional to re-hang the door, re-set the frame, and align the strike so the door closes the way it did when it was new.

Why it is worth fixing now

A door that will not close properly is more than a daily irritation. It cannot be locked securely, so it is a weak point for anyone trying to get in. It cannot seal, so it leaks heat all winter and lets in drafts and moisture. And a forced, shoved, or slammed door wears its hinges, frame, and latch even faster — so a small alignment problem ignored today becomes a bigger, more expensive one by spring.

Related door repair services in Ottawa

If this article points to a problem you're dealing with right now, these pages go deeper — or you can browse the rest of the blog and request a free quote:

• Door Won’t Close Ottawa — on-site diagnosis and repair for doors that won’t close or latch.
• Hinge & Hardware Repair — fixing the sagging and loose hinges behind most closing problems.
• Door Frame Repair Ottawa — when a shifted or damaged frame is keeping the door from closing.