Your uPVC door will not lock properly. The handle lifts but nothing engages. Or it locks on the latch but the deadbolts will not shoot. Or you have to slam it, lean on it and wrestle with the handle just to get the thing to secure. You have been doing this for weeks, maybe months, and you have finally had enough.
So you start looking into it, and the first thing you find is the price of a new uPVC door. Anywhere from £600 to over £1,200 fitted. Your heart sinks. That is a lot of money for something that was working fine a few months ago.
Here is the good news. In the vast majority of cases, you do not need a new door. What you need is a repair. And that repair will typically cost somewhere between £80 and £180, depending on what has gone wrong. Let us walk through the most common faults, why they happen and what it actually costs to fix them.
How a uPVC Door Lock Actually Works
Before we get into what goes wrong, it helps to understand what is inside your door. Most uPVC doors across Manchester use what is called a multipoint locking system. This is a long strip of metal that runs vertically through the centre of the door, connecting the handle at the middle to hooks, bolts or rollers at the top and bottom.
When you lift the handle, it activates the gearbox, which is the central part of the mechanism directly behind the handle. The gearbox pushes out the hooks and bolts into the keep plates on the door frame, securing the door at three or more points along its length. The euro cylinder sits through the gearbox and allows you to deadlock the whole system with your key.
It is a clever system, and when it is working properly it makes your door very secure. But it has moving parts, and moving parts wear out. The question is which part has failed, because that determines the cost and complexity of the repair.
The Gearbox Has Worn Out
This is the single most common reason a uPVC door stops locking properly. The gearbox is a metal cassette inside the door that contains springs and levers. Every time you open, close and lock the door, the gearbox does work. Over thousands of cycles, the internal springs weaken and the levers wear down.
The symptoms are clear. The handle lifts but feels loose or floppy. You can hear the mechanism moving but the hooks do not engage with the frame. Or the handle lifts part of the way and then stops, as if something is blocking it internally.
A gearbox replacement is one of the most common jobs we do across Manchester. The old gearbox gets removed from the door edge, and a new one slides in. The hooks, bolts and handle are reconnected, and everything works like new. The whole job usually takes about an hour, and the cost is typically between £120 and £180 depending on the type of mechanism your door uses.
Compare that to £800 or more for a new door. It is not even close.
The Euro Cylinder Has Failed
The euro cylinder is the part your key goes into. It sits through the gearbox and controls the deadlocking function. When it fails, you might find that the key turns but does not actually engage the deadlock, or that the key will not turn at all, or that it turns too freely without doing anything.
Euro cylinder failure can happen because of internal wear, corrosion or because the cylinder has been damaged by a forced entry attempt. In Manchester, we also see a lot of cylinders that have been fitted incorrectly, with too much of the cylinder sticking out beyond the handle on the outside. This makes them vulnerable to snapping, which is a whole other problem we will cover shortly.
Replacing a euro cylinder is one of the quickest and cheapest repairs you can do on a door. It takes about fifteen minutes and the cost, including a good quality anti-snap cylinder, is usually under £100. There is absolutely no need to replace the entire door because of a faulty cylinder.
The Door Has Dropped on Its Hinges
This is a really common one, and it is not always obvious. Over time, the weight of the door causes the hinges to sag slightly. The door drops by just a few millimetres, but that is enough to throw the whole locking system out of alignment. The hooks and bolts no longer line up with the keep plates on the frame, so when you try to lock the door, it jams or refuses to engage.
You can usually spot this by looking at the gap around the door when it is closed. If the gap is wider at the top on the handle side and narrower at the bottom, the door has dropped. You might also notice that the door scrapes along the threshold when you open or close it.
Most uPVC door hinges are adjustable. A skilled engineer can adjust the hinges to lift the door back into the correct position, which brings all the locking points back into alignment. This is usually the cheapest fix of all, often under £80, and it makes a massive difference to how the door feels and operates.
If the hinges themselves are worn beyond adjustment, they can be replaced. Again, the cost is far less than a new door.
The Handle Is Not Engaging the Lock
Sometimes the handle itself is the problem. The spindle, which is the square metal bar that connects the handle to the gearbox, can wear down or snap. When this happens, the handle moves freely but does not activate the locking mechanism at all. It is a bit like turning a steering wheel that is not connected to anything.
Handle and spindle replacements are quick and inexpensive. The handle itself can be replaced in about ten minutes, and a new spindle comes with it. This is one of those repairs where you will wonder why you put up with the problem for so long.
When Do You Actually Need a New Door?
There are situations where a door genuinely needs replacing. If the door panel itself is cracked or warped, if the frame is rotten or damaged, or if the door has been severely damaged in a break-in, then yes, a replacement might be the right call. But these situations are the exception, not the rule.
In our experience working across Manchester, Salford, Trafford, Tameside, Bolton and the rest of Greater Manchester, at least eight out of ten uPVC doors that homeowners think need replacing can actually be fixed with a repair costing under £200. That is a saving of £600 to £1,000 or more.
How to Get Your uPVC Door Fixed Properly
The key is to get a proper diagnosis from someone who works with these doors every day. Not a general handyman, not a window fitter trying to sell you a new door, but a specialist who understands multipoint locking systems inside and out.
At MA Door Repairs, we carry the most common gearboxes, cylinders, handles and hinges on our vans, which means most repairs can be completed in a single visit. We will tell you honestly what is wrong, what it will cost, and whether a repair is the right option or whether you genuinely do need to consider a replacement.
If your uPVC door is not locking properly, give us a call on 07411 496213. We cover all of Manchester and Greater Manchester, and we are happy to give you advice over the phone before you even book anything. More often than not, we can tell you roughly what the problem is just from your description. And we can usually get to you within the same day.
Do not spend £800 on a new door when a £120 repair will do the job. Get it checked first.