Is your UPVC door locked shut? If you are unfortunate enough to find yourself as the owner of a door that just won’t open, then the problem might lie with the door handle. This could be caused by several different issues.

In this post, we take a look at the most common problems with old UPVC doors and how to solve them. If you’re wondering how to open a UPVC door with a broken mechanism or if you find yourself with your UPVC door lock stuck shut, then read on to find out more.

So then, how do you open a UPVC door with a broken mechanism?

How Do You Open a UPVC Door With a Broken Mechanism?

With the increases in front door prices, you will want to incur as little damage as possible when trying to get it open. UPVC door lock repairs can be costly, but not as expensive as a new door.

Below are some of the main reasons why your door could be broken and how to fix it:

Broken Door Locks

The majority of UPVC doors are designed with two locking parts:

  • A Cylinder lock where the key is inserted
  • A multipoint lock that is engaged when the handle is lifted

If your door is misaligned or if there has been excessive pressure placed on the door, then it can cause damage to the locks.

To rule out any problems with the cylinder, try inserting your key and turn to unlock. If it turns freely and unlocks then the problem may lie in the multipoint lock. And this will need replacing.

However, if your UPVC door won’t open, then this makes replacing the locks quite tricky.

Do not attempt to force open the door. This will only result in further damage to your door and leave your UPVC door lock mechanism broken beyond repair.

A fully trained locksmith will be required and if the damage is significant enough, you may need to contact an installer for a door replacement.

For a quick and temporary fix, try the following methods…

Tight UPVC Door Screws

If the screws are too tight then this can cause the handle’s backplate to pinch the lock, meaning your UPVC door won’t open. This prevents the spring from working correctly and can cause the door to jar.

This can be rectified by loosening the screws that hold the handle to the door which will make the handle easier to turn.

Internal Springs Are Not Lubricated

Internal springs can sometimes bind against the inside of the door handle, making it difficult to operate. You can try removing the handle from the door but if you are unsure, it is best to contact an expert in case of inflicting further damage.

If you find your UPVC door lock mechanism broken, a technical expert might be the best person to call to sort the matter quickly and incurring minimal damage.

Broken Spring Mechanism

If your UPVC door won’t open or isn’t closing as it should, there could be a problem with the lock’s spring mechanism.

Try removing the latch from the door and pressing it down with your finger. If it doesn’t fully spring back or springs back very slowly, it will need replacing.

Hinge Adjustment

Over time and due to changes in temperature, your door can start to drop. This can make it hard to lock, putting a strain on the mechanism so you may find our UPVC door lock mechanism broken.

Fortunately, the majority of UPVC doors have adjustable hinges. If you find your UPVC door won’t open or is catching on the frame, then it’s likely the hinges need adjusting.

UPVC Door Lock Mechanism Sticking? Common Problems With Old UPVC Doors.

UPVC door locking mechanism problems are very common in old doors and there are many reasons why you may notice your UPVC door lock stuck shut.

Broken keys, rust and misalignment are the most common causes of jammed door locks and doors that just won’t open.

You’ll have to call a locksmith to carry out UPVC door lock repairs, or potentially even replace the door entirely, depending on the cause of the jammed lock.

Replacing full mechanisms can be expensive but, in many instances, unavoidable.

Replacement Gearbox

The gearbox is an essential part of a uPVC door’s locking mechanism and could be the reason you’re having trouble. If you have tried putting your key into the lock and it makes the familiar clicking sound (like it’s unlocking) then the problem will most likely reside with the gearbox and not the barrel lock itself.

How to open a UPVC door with a broken gearbox is not an easy question to answer, or a simple problem to solve. In order to get your door open again, you will need a replacement.

Every UPVC door will require its own unique gearbox, dependent on the particular brand or model of the door. In order to ensure you get the right gearbox, you will need to look for the logo of the manufacturer.

Faulty Euro Cylinder

If the key cylinder is failing, then this will need to look into UPVC door lock repairs or replacements. You can keep cost to a minimum by replacing this part, along with additional new keys.

Changes in Temperature

The weather can cause many issues with your doors. Shrinkage and expansion can be a big problem, making it difficult for you to lock your doors.

You may feel the need to apply force when if your UPVC door won’t open or close easily, but this can often cause further damage.

Dropped Door

It’s very common for old UPVC doors to drop, meaning your UPVC door won’t open smoothly – if at all. Modern UPVC doors are designed to be adjustable, making this a quick fix.

uPVC Replacement Door Cost

UPVC Door Replacement

If you’re experiencing any of the above problems, a temporary fix might not be the best solution and could end up costing you more in the long term.

Now would be a good time to take a critical view of your doors and determine whether the time has come to replace them.

A UPVC door that is a couple of decades old will inevitably show signs of wear and tear. It can also be a huge security risk.

A newer, more modern door will not only look substantially better, but it will perform better as well.

Replacing Your UPVC Door Adds Value

Looking to add real value before you sell? A simple home improvement such as replacing your UPVC door can make a big difference, enhancing kerb appeal and value.

When it comes to your front door, it can be as simple as opting for a contemporary colour or choosing a whole new front entry. Sidelights, a porch or cover can create a whole new focus point for your home.


Replacing your UPVC door can increase accessibility. From baby strollers to wheelchairs, a door that’s easy to access will make home life that little bit easier.

You can even switch to a wider door with a lever-style handle that can be opened with an elbow.

Elevate your home’s kerb appeal with a door that not only looks great but is practical too.

Call in the pros and opt for a fresh design. You will find many options offered to you by your installer.

Find out more about the door styles available here.

Replacement Door Cost

During their lifetime, our doors get slammed, kicked and exposed to temperature changes.

Many of today’s doors are designed to offer great performance but if you have a door that’s decades old, it may be time to seek a replacement.

Is your current UPVC door up to the task? Would you know how to open a UPVC door with a broken mechanism?

If you would like a modern door that will perform highly for many years to come, then take a look at our UPVC door prices below. The cost of your replacement door will be dependent on style, glazing (if you opt for any), and size.

Our guide prices, however, will give you a good indication of UPVC door cost and how much you can expect to pay.

Front Door Prices (900 x 2100mm)

Lock Type Glass Style Guide Price
Standard Roller Arched Top Light £575 – £675
High Security Arched Top Light £625 – £725
Standard Roller Diamond Leads £600 – £700
High Security Diamond Leads £650 – £750

French Door Prices (White uPVC)

French Doors Size Door Type Guide Price
1200mm x 2100mm Fully Glazed £950 – £1050
1200mm x 2100mm Half Glazed & Plain Panel £975 – £1075
1500mm x 2100mm Fully Glazed £1000 – £1100
1500mm x 2100mm Half Glazed & Plain Panel £1025 – £1125
1800mm x 2100mm Fully Glazed £1075 – £1175
1800mm x 2100mm Half Glazed & Plain Panel £1100 – £200

uPVC Patio Door Prices (2 Panel)

Patio Doors Size Colour Guide Price
1500mm x 2100mm White £975 – £1075
1500mm x 2100mm Wood Grain £1225 – £1375
1800mm x 2100mm White £1000 – £1100
1800mm x 2100mm Wood Grain £1250 – £1400
2000mm x 2100mm White £1050 – £1150
2000mm x 2100mm Wood Grain £1300 – £1150

Patio Door Cost (1 Panel)

Patio Doors Size Size Colour Guide Price
2100mm x 2100mm White £1375 – £1525
2100mm x 2100mm Wood Grain £1800 – £2000
2500mm x 2100mm White £1450 – £1600
2500mm x 2100mm Wood Grain £1875 – £2075
3000mm x 2100mm White £1550 – £1700
3000mm x 2100mm Wood Grain £2000 – £2200

uPVC Replacement Door Cost

Frequently Asked Double Glazing Questions

Frequently Asked Double Glazing Questions

Are UPVC Doors Easy To Maintain?

UPVC doors are extremely easy to maintain and will never require re-painting or varnishing. Neither will a UPVC door rot or warp!

Do You Do Replacement Front Door Locks?

The majority of our double glazing installers do provide replacement front doors and replacement front door locks. Please call one of our advisors on: 0800 015 5679.

How much does it cost to replace a front door?

The price of a new front door will depend on the type and style of door you choose. The cost of a replacement uPVC front door can be as little £600 or as much as £1,200. Composite doors can start from around £800 but can cost around £1,500. The type of glass, extras and locking system you choose will affect the price of a front door. Get an online quote for uPVC front doors and composite doors to get a good indication of the cost.

How much does a cheap door cost?

A cheap uPVC door can be as little as £500, especially if you are looking for a back door. Front doors tend to be more expensive than back doors and cheap ones will start from around £600. Cheap composite doors usually start from around £800 to a £1,000. The locking system and glass options you choose will also affect the price of the door.