A door that catches on the frame, needs lifting to lock, or suddenly will not shut properly is not just an annoyance. On a uPVC door in particular, it can put strain on the multi-point locking mechanism and leave the property difficult to secure. If you are looking for how to repair a dropped door, the key is to identify whether the problem is alignment, loose hinges, a worn mechanism or movement in the frame before forcing anything.
In many cases, a dropped door can be realigned without replacing the door, the lock or the handle. The work needs to be done carefully, though. Repeatedly lifting, slamming or forcing a misaligned door can turn a straightforward adjustment into a failed gearbox or damaged locking strip.
First, check whether the door has actually dropped
Stand outside with the door closed and look at the gap around all four sides. A consistent gap suggests the door is sitting squarely. If the gap is tighter at the top on the handle side, or the bottom corner is rubbing the threshold, the door has likely dropped on its hinges.
Open and close it slowly. Listen for scraping and note where it catches. Then lift the handle only when the door is fully closed. If the handle is stiff, will not lift all the way, or needs you to pull or lift the door at the same time, the hooks, rollers or bolts may not be lining up with their keeps in the frame.
A dropped door is commonly mistaken for a broken lock. The lock may be working perfectly, but it cannot engage because the door is no longer in the right position. This is particularly common after changes in temperature, normal wear to hinges, heavy use, or slight movement in an older property.
How to repair a dropped door: start with the hinges
Most modern uPVC and composite doors have adjustable hinges. These adjustments can move the door up or down, side to side, and sometimes in or out against the seals. The exact screws and adjustment points vary between hinge types, so do not remove random screws from the hinge body. Some hold the door together rather than adjust it.
Start by checking for obvious looseness. With the door open, hold the handle-side edge and gently lift it. Excessive movement may indicate loose fixings, worn hinges or a problem with how the hinge is secured to the frame. Tighten any clearly loose fixing screws, but avoid overtightening them, especially where screws are fixed into plastic sections.
If the hinges have visible adjustment points, remove the small plastic caps if fitted. Use the correct Allen key or screwdriver and make very small changes – usually a quarter turn at a time. After each adjustment, close the door and test the gaps and locking action again.
For a door rubbing at the bottom on the handle side, it normally needs a small upward adjustment. If it catches along the lock side of the frame, a side-to-side adjustment may be needed. The aim is not merely to make it close. The door should sit evenly in the frame and allow the handle to lift smoothly without pressure.
Do not make several adjustments at once. It becomes difficult to tell which change improved the problem, and over-adjustment can create a new issue with the seals, hinges or locking points.
Why packing may be the real answer
Some doors cannot be corrected properly through hinge adjustment alone. Double-glazed uPVC doors contain a sealed glass unit, and that glass helps support the structure of the door leaf. Over time, the glazing packers around the unit can shift, allowing the door to sag.
The professional repair is often called toe-and-heeling. It involves removing the glazing beads carefully, supporting the glass correctly, and repositioning packers to restore the door’s shape before refitting everything securely. This is precise work. Incorrect packing can crack the glass, distort the sash or make the locking issue worse.
If hinge adjustments improve the door only temporarily, or the door has noticeably dropped at the handle-side top corner, packing is worth considering. It is often a far better option than being told the whole door needs replacing.
Test the lock with the door open
This quick check can help separate an alignment problem from a lock fault. With the door open, lift the handle and see whether the locking points extend fully. Then lower the handle and check they retract smoothly.
If the mechanism works freely while the door is open but becomes stiff or will not engage when closed, alignment is the likely cause. The keeps on the frame may need adjusting after the door has been repositioned.
If the handle is stiff or the locking points will not move even with the door open, stop using force. The internal gearbox or multi-point mechanism could be failing. Continued pressure on the handle may snap it, damage the cylinder or leave the door locked shut.
A locksmith experienced in uPVC door repair can diagnose this without guessing. Where practical, they can realign the door, adjust or replace the keeps, and repair the specific failed part rather than recommend an unnecessary new door.
Check the keeps and frame condition
Keeps are the metal plates fixed to the frame that receive the hooks, rollers and bolts when you lift the handle. Look for fresh scoring marks or scrape marks around them. They show where the locking points are striking instead of entering cleanly.
Some keeps have a small amount of adjustment. Once the door is hanging correctly, moving a keep slightly can restore a smooth lock-up. This should be done in tiny increments, as changing one keep can affect the feel of the handle and the compression of the seals.
Also inspect the frame and threshold. Swelling or deterioration in timber surrounds, loose fixings, and movement around the door opening can all alter the alignment. On a timber door, seasonal expansion may be a factor, while warped timber, damaged hinges or a loose frame may call for joinery work as well as lock adjustment.
Avoid these common mistakes
It is tempting to keep lifting the door by the handle, shoulder it shut, or force the key when the lock feels tight. Each of these puts extra load on parts that are already under strain. A multi-point mechanism is designed to operate in line, not while being dragged against its keeps.
Avoid spraying general-purpose oil into a euro cylinder or gearbox. It can attract dirt and may make a worn mechanism feel better briefly while masking the underlying fault. A suitable lock lubricant can be useful for a dry cylinder, but it will not fix a dropped door.
Do not remove glazing beads unless you understand how the sealed unit is supported and how to refit it. Beads can be damaged easily, and a poorly secured unit creates both a security and safety concern.
Finally, do not leave a door that only locks with effort. A door may still appear secure one evening and then fail to lock at all the next time you leave the property.
When to call a locksmith for a dropped door
DIY adjustment is reasonable when the door is only slightly out of line, the hinges are clearly adjustable, and the lock works normally with the door open. It is sensible to call for professional help when the handle is very stiff, the key will not turn, the door is locked shut, hinges are damaged, glazing needs packing, or the door has become difficult to secure.
For landlords and property managers, prompt repair also avoids a tenant being unable to lock the property and prevents a minor alignment issue becoming an out-of-hours emergency. A proper repair should include testing the handle, key, hooks or rollers, keeps and final gap around the frame – not simply getting the door to shut once.
South Gloucestershire Locksmith & Security repairs dropped uPVC, composite and residential doors across Bristol and South Gloucestershire, with direct access to a local locksmith rather than a national call centre. The focus is on restoring alignment and security, with clear advice if a worn gearbox, hinges or cylinder also needs attention.
A door should close with a firm, even movement and lock without being lifted, pulled or forced. If yours does not, deal with the alignment early. It is usually the simplest way to protect the locking mechanism and keep the property secure.