How to Adjust uPVC Door Hinges (and When to Call a Locksmith)

A uPVC door that drags on the threshold, catches on the frame or needs a shove to lock has usually dropped on its hinges. Small adjustments can bring it back into line — but get it wrong and you can make the locking worse.

Signs Your Door Has Dropped

  • The bottom corner on the lock side rubs the threshold
  • You have to lift the handle hard or push the door to lock it
  • Daylight or draughts show at the top corner on the lock side
  • The door locks easily in winter but fights you in summer

The Main Types of uPVC Hinge

Butt and flag hinges

Most uPVC doors use flag hinges, which usually have adjustment screws for height (up and down), lateral (side to side) and compression (how tightly the door seals). The screws are often hidden under plastic caps.

Butt hinges on composite doors

Some composite doors use heavier butt hinges with their own adjustment system. These vary a lot by manufacturer.

Before You Touch Anything

  • Find out which hinge you have — look for a brand name on the hinge or under its cap
  • Make one small adjustment at a time and test the lock after each one
  • Adjust all hinges evenly; changing one alone can twist the door
  • Never remove the hinge screws holding the door to the frame

When to Call Us Instead

  • The hinge has no visible adjustment, or the screws will not turn
  • The door is very heavy or badly dropped
  • The handle has gone floppy as well — that suggests the gearbox, see floppy door handle
  • You have adjusted it and the lock is still stiff

A professional hinge adjustment and realignment costs from £49 and often takes under 30 minutes. We realign the keeps at the same time, so the door locks smoothly again. There is no call-out fee.

Frequently Asked Questions

How do I know if my uPVC door has dropped?
It catches at the bottom on the lock side, you have to lift the handle hard to lock it, or there is a gap at the top corner. All point to worn or loose hinges.

Can I adjust uPVC door hinges myself?
Small adjustments are possible on many flag hinges, one small turn at a time. If you are unsure of the hinge type or the door is heavy, it is safer to get it done professionally.

How much does a locksmith charge to realign a uPVC door?
From £49, usually under 30 minutes, with no call-out fee.

Need a Locksmith Right Now?

📞 07486 889391 — 24/7, no call-out fee, typically with you in around 30 minutes. Or WhatsApp a photo of your door for a fixed quote before anyone travels.

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