uPVC Door Repair vs Replace Cost | The Real Ten-Year Maths

A new uPVC door looks appealing when the old one starts playing up. Sales reps know that. They'll quote you £800 to £1,400 fitted and frame it as the sensible long-term choice. Sometimes it is. More often, it isn't.

Here's what ten years of ownership actually costs, with the numbers laid out properly.

What Goes Wrong on a uPVC Door

The door itself, the slab of white PVC, almost never fails. It doesn't rot, it doesn't warp badly enough to matter, and unless someone's driven a van into it, the frame is probably fine too.

What does fail, repeatedly, is the hardware. The multipoint gearbox, the cylinder, the handles, the hinges. These are mechanical parts under daily stress. On a busy back door in a Beeston terrace or a communal entrance in an NG7 HMO, a gearbox might last five or six years before it starts stiffening or dropping a hook. Cylinders should be upgraded regardless of failure, because the cheap brass one fitted at the factory is almost certainly not anti-snap.

The point is: hardware failure is not door failure. Replacing the whole door because the gearbox seized is like scrapping a car because a tyre went flat.

The Numbers, Side by Side

The gap between servicing twice and replacing once is £400 to £800 in the landlord's pocket, minimum. On a Radford terrace with three rentable doors, that's a real number.

What Actually Drives the Repair Cost Up

A few things make a gearbox swap more expensive than the base price.

• Access difficulty. A door that's dropped badly on its hinges takes longer to strip down. Budget an extra £30 to £50 if the door needs realigning before the gearbox comes out.
• Obscure multipoint patterns. Older doors sometimes have discontinued gearbox profiles. A Lockmaster or Winkhaus unit from 2008 can be sourced, but it takes longer and costs more than a current Maco or GU part.
• Cylinder size. Measure the external and internal spindle lengths before calling. A non-standard 35/45 or 45/55 split adds a few pounds to the part cost, nothing dramatic.
• Repeat callouts. A gearbox that's been failing slowly and has been forced open dozens of times sometimes takes the keeps with it. That's a frame repair, not just a gearbox swap, and it changes the maths.

When Replacement Does Make Sense

There are genuine cases for a new door. If the frame has dropped at the corners and there's a visible gap to the outside, no amount of hardware work fixes that. If the door is a single-glazed unit from the late 1990s, the heat loss alone might justify an upgrade on a house in Clifton or Wollaton where the bills are high. And if a landlord is planning a full renovation of an NG2 flat anyway, fitting a new door with a PAS24-rated lock set from the start is cleaner than retrofitting one.

But these are structural or strategic decisions. They're not what most people face when the key starts getting stiff in January.

Spend the Money in the Right Order

Get the cylinder done first if it hasn't been touched since the door was fitted. A standard factory cylinder on a Sneinton or Hyson Green terrace is a snap risk, full stop. An Ultion or Avocet ABS fitted properly costs under £140 and meets TS007 3-star. That's the single best £140 you'll spend on that door.

Then watch the gearbox. If the handle needs lifting hard to engage the hooks, book the gearbox before winter. A service call in October is cheaper and faster than an emergency lockout in February.

If you've done both of those and the door still feels tired after six or seven years, then have the replacement conversation. By that point you've spent £300 to £400 on hardware that's genuinely improved the door's security and function. You're not throwing money at a lost cause, you're making an informed call.

Fort Secure covers Nottingham and the NG1 to NG11 postcodes, with average arrival under 30 minutes on most calls. Pricing is quoted honestly over the phone before anyone turns up. If a repair is the right answer, that's what we'll tell you.