Quick answer
A misaligned composite door has an uneven gap between the slab and the frame, usually caused by hinge cam drift, a dropped corner, or frame movement. It shows up as catching, poor sealing, and eventually locking problems. A proper fix means measuring the reveal at four points and resetting the hinges to a factory-even gap, not guesswork adjustment.
Overview
A misaligned door has uneven gaps between the slab and frame. This causes catching, poor sealing, security issues and eventually mechanism failure. Adjustable hinges fix it.
Symptoms
- Gap around the door is uneven.
- Door catches or rubs somewhere.
- Poor weather sealing on one side.
Common causes
- Hinge cams adjusted incorrectly.
- Foundation movement.
- Long-term slam damage.
What 'misaligned' actually means, measured properly
Every composite door is designed to sit in its frame with a consistent gap — the reveal — typically around 3 to 4mm all the way round, though this varies slightly by manufacturer. Misalignment means that gap has become uneven: wider at the bottom hinge and tighter at the top, or wider on the latch side than the hinge side, or any combination of the two.
This is a measurable fault, not a subjective one. A proper assessment involves taking the reveal at four fixed points — top, bottom, and both sides at handle height — with a feeler gauge or a simple ruler, and comparing those four numbers against each other and against the factory target. Anything more than a millimetre or two of variance between points indicates real misalignment rather than normal manufacturing tolerance.
The chain reaction misalignment sets off
Misalignment rarely stays a single, isolated problem for long. An uneven gap first shows up as a slightly stiff swing or a faint catching sound. Left alone, the narrow side of the gap starts to compress the weatherseal unevenly, which accelerates wear on that section of seal. As the seal degrades unevenly, draughts and water ingress start on the wide side of the gap, while the narrow side continues to bind.
Eventually the multi-point lock hooks — which are engineered to travel a very specific distance into their keeps — start to miss or only partially engage, and what began as a cosmetic gap issue becomes a security and weatherproofing issue as well.
Common root causes we find on inspection
The most frequent cause by far is hinge cam drift — the adjustable cams inside a three-way hinge gradually creeping from their set position under the door's own weight and repeated use. The second most common is a genuinely dropped hinge, where wear inside the hinge mechanism itself, rather than just the cam setting, has allowed the door to sag.
Less commonly, but more relevant in Cornwall than many parts of the country, is frame movement: on older stone-built properties or newer estates on made-up ground, the frame the door sits in has itself shifted slightly, meaning no amount of hinge adjustment on the door side will fully correct the gap.
- Hinge cam drift — most common, corrected with a calibrated adjustment.
- Genuine hinge wear — needs hinge replacement rather than adjustment.
- Frame movement — needs frame packing or reset alongside any hinge work.
Why granite and cob-wall properties see this more often
Cornwall's older housing stock includes a high proportion of solid stone, granite, and cob-walled buildings, all of which move seasonally with changes in moisture content in a way that modern cavity-wall construction generally doesn't. A door frame set into one of these walls can shift by a millimetre or two across the year as the wall itself expands and contracts with damp winters and drier summers.
This means a door that was perfectly aligned when fitted can develop a genuine, structural-cause misalignment over a few years purely from the building around it moving — which is why we always ask about the age and construction of the property when investigating a persistent misalignment that keeps returning after adjustment.
Why a proper realignment is a calibrated job, not trial and error
Correcting misalignment properly means adjusting hinges in a specific sequence — vertical first to fix any drop, then horizontal to centre the door in the frame, then compression last to set how firmly it presses onto the seals — and re-measuring the reveal after each change. Doing these out of order, or over-adjusting any single cam, routinely creates a new problem while fixing the original one, which is the most common outcome of DIY attempts we're called out to correct afterwards.
A three-way hinge cam typically has only a few millimetres of total adjustment range, and pushing a cam to its limit to compensate for a bigger problem — like genuine frame movement — will strip the cam mechanism rather than solve anything.
A recent example: a converted barn near Bodmin Moor
A converted barn property near Bodmin Moor, with a composite door set into a reformed stone opening, had a persistent misalignment that the owner had already had 'adjusted' twice by a general handyman with no lasting improvement. On inspection, the frame itself had a very slight twist relative to true vertical — a legacy of the original stone opening rather than anything wrong with the door. The fix combined a hinge adjustment with re-packing the frame at two points, which finally held the reveal even after several months of monitoring.
What a misalignment survey looks like on site
Diagnosing a misaligned door properly means measuring, not eyeballing. We check the reveal at the top, middle, and bottom of both the hinge side and the latch side, giving six measurements that map exactly how and where the door has moved out of true. A door that's misaligned uniformly — wider or narrower all round — points to a different cause than one that's misaligned only at one corner, and that map dictates which cams get adjusted and in what order.
We also check the frame itself with a spirit level on both the head and the jambs, because a door can appear misaligned when it's actually hanging correctly in a frame that isn't square, in which case adjusting the door only masks a frame problem rather than solving it.
Hinge adjustment ranges relevant to correcting misalignment
Correcting a misaligned door typically uses all three axes of hinge adjustment together rather than just one: vertical lift to correct height differences, horizontal movement to centre the slab in the frame opening, and compression to even out how firmly the door meets the seal on each side. Each axis has a limited range — usually a few millimetres — and where the required correction exceeds that range on every hinge, it's a sign the misalignment has a cause beyond simple hinge wear, such as a frame that's genuinely shifted.
We always adjust in small increments and re-test the lock action after each change, because correcting one axis can slightly alter another — bringing a door back to vertical, for instance, can change how it sits horizontally too.
Frame fixings and settlement behind a misaligned door
On solid granite openings, a frame is fixed at intervals through packers into the stone, and if even one fixing point has loosened or a packer has crushed slightly, the frame can twist a fraction along its length. This shows up as a door that's aligned correctly at the top but misaligned at the bottom, or vice versa — a pattern that hinge adjustment on the door can't fully resolve because the frame the hinges are fixed to has itself gone slightly out of true.
In cob and older rendered openings, seasonal moisture swings can shift a frame fixed with fewer, longer fixings, and we sometimes find that reseating and re-tightening the frame fixings resolves a misalignment that looked, at first glance, like a door hinge fault.
How a misaligned door progresses if it isn't corrected
An uncorrected misalignment rarely stays cosmetic. Uneven contact against the seal on one side lets draughts and water in at that point, which over a Cornish winter can mean water tracking into the frame timber or subframe behind the seal — a much bigger repair than the original misalignment. Meanwhile the multi-point lock, designed to engage evenly along the whole door edge, is put under uneven load every time it's used, wearing the hooks and keeps unevenly and shortening the working life of the lock as a whole.
Typical repair costs in Cornwall
| Work | Typical price | Notes |
|---|---|---|
| Reveal measurement and calibrated hinge adjustment | £90–£150 | Standard fix for cam drift |
| Hinge replacement where cams are worn out | £140–£220 | Adjustment alone won't hold |
| Frame packing/reset | £180–£320 | Needed where the frame, not the door, has moved |
| Full reveal check and seal assessment | £95–£130 | Recommended if misalignment has been present for months |
Guide prices only — we confirm the cost after seeing the door.
When to call a professional
- 3-way hinge adjustment is worth having done properly the first time.
Prevention
- Tighten hinge screws annually.
