What misalignment actually looks like
A misaligned shopfront door shows a handful of telltale symptoms. The door drags on the threshold (bottom edge scraping the floor). The latch does not meet the strike cleanly (you have to lift or push to engage it). The top of the door sits forward of the head frame on one side. The gap between door and frame is uneven — wider at one corner, tighter at another.
These are small displacements. A typical misaligned aluminium door has moved 2–5 mm from true. The fix is correspondingly small — but knowing which of the three underlying causes is responsible is the first step.
Cause 1: pivot or hinge wear (the most common)
On aluminium shopfront doors, the bottom pivot bears the full weight of the door. As it wears, the door drops by the wear distance — typically 2–4 mm before the symptoms become obvious.
A worn top centre lets the door rotate slightly at the head. The hinge edge stays in place; the latch edge drifts away from the frame.
Butt-hinged doors (timber, steel) lose alignment through hinge bush wear or hinge fixing loosening. Same effect: the door no longer hangs true.
Fix: replace the worn pivot, top centre or hinge. 1–2 hours typically. Door returns to square; closer can be reset to spec; latch meets strike cleanly. The door’s frame, glazing and lock all stay in place.
Cause 2: frame settlement
Frames move. Older buildings settle. Floor slabs shift over time. Vehicle impact to adjacent columns moves the structural elements the frame is fixed to. Refurbishment of adjacent units can disturb shared structural members. Over years, a frame that started life square ends up out of true.
Diagnosis is straightforward: measure with a spirit level (head should be level), tape (diagonals should match within 3 mm on a typical shopfront door), plumb line (jambs should be vertical). Where the frame is genuinely out of square, the door alignment problem is downstream of a structural one.
Fix depends on severity. Small settlement (2–5 mm) is corrected by repacking the pivot or hinges to bring the door back to square within the moved frame. Larger settlement may require frame reinforcement or, in rare cases, replacement.
Cause 3: attempted forced entry
A break-in attempt that did not succeed often leaves the strike plate damaged or pulled out of position, the door binding on the frame from the impact, or hardware fixings loosened by the prying load. The door has not really moved — but it now sticks or fails to latch.
Look for: visible damage to the strike plate or frame around the lock, tool marks on the lock cylinder or door edge, fresh paint or finish damage near hardware, sometimes lock cylinder itself stiff or grinding.
Fix: strike plate replacement, lock cylinder check (replace if compromised), frame inspection for structural damage, all hardware fixings re-tightened. Reasonable insurance evidence is usually preserved if photographed before work begins — the insurer’s claim is for the attack, not just the repair.
Preventing future misalignment
Most misalignment is gradual. A six-monthly maintenance visit catches the early symptoms (2 mm of pivot wear, slight head gap inconsistency) before they cascade. Catching it then is a 30-minute adjustment; waiting until the door is dragging is a 2-hour pivot replacement plus the cascade damage.
For doors in coastal locations or on prevailing-wind frontage, the wear rate is faster — quarterly inspection is justified.
When alignment cannot be restored
Rarely, the door is past adjustment. Common reasons: the frame has settled by more than 10–15 mm (re-packing is impractical), the door itself has been bent in vehicle impact, the hardware mortices have been enlarged by previous repairs and no longer hold the pivot in true position.
Even then, full door replacement is unusual. Frame repair plus a like-for-like door blade restores the installation without disturbing the surrounding shopfront.