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2 min readUpdated 23 September, 2026

Clear ice and debris, check whether the gasket has folded out, compare gaps and test hinge play.

In short: do not force the leaf or move the latch blindly.

Heavy doors must be supported before adjustment. If the frame is out of square, inspect the floor, panels and frame fixing; latch adjustment would only hide the cause.

Symptoms

The door does not latch, swings open by itself, or leaves a visible gap around the frame when shut.

Causes and fixes

Possible causeHow to checkSolution
Hinges out of adjustmentDoor hangs crooked; the gap around the frame is uneven.Loosen the mounting bolts, realign the door, retighten.
Worn hingesDoor sags; you feel play or wobble when lifting the door edge.Replace the hinges. Heavy-duty cam-lift hinges suit high-traffic doors.
Self-closing mechanism failedDoor stays where you leave it instead of swinging shut.Adjust or replace the door closer; check spring tension.
Obstruction in the frameIce, debris, or a damaged gasket blocks closure.Clear the obstruction and inspect the gasket.
Frame distortionThe frame is no longer square — can indicate panel movement.Check panel alignment and cam-lock tension; re-level if needed.

Work from cheap to expensive

Hinge adjustment costs nothing and resolves most "won't close" complaints. Only move on to replacing hardware once a simple realignment fails to restore an even gap and a clean latch.

If the frame itself has gone out of square, the problem is structural, not a door fault — re-check the panel joints and cam-lock tension before touching the door. See Panel specifications.

If closing the door still leaves a draught after the hinges and latch are good, the seal is the next suspect — run the paper-note test.


Need a replacement hinge, handle, or closer, or want a fault assessed? Have your cold-room model and serial number (on the data plate) and a photo ready, and contact [email protected].

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