Fixing Issues with a UPVC Door Lock Mechanism

If you are having issues with your uPVC door lock mechanism or it has broken, read our guide below on how you can do to get it fixed!

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Fixing Issues with a UPVC Door Lock Mechanism

When a uPVC door lock mechanism is sticking, it can mean that there is an issue with your uPVC door and you should always look to get it seen too. Often a uPVC door lock mechanism can become sticky if the door comes out of alignment or the strike plate becomes loose, you can usually tell if the issue is with the door or with the lock by seeing how well the uPVC door lock mechanism engages when the door is opened.

If the lock is still sticky and stiff when trying to engage the uPVC door lock mechanism when open, then it’s an issue with the lock, if not, there might be a problem with the door.

 

The Door Lock Mechanism is Sticking

If your uPVC door lock mechanism is sticking only when the door is closed, there is likely a problem with the door itself, this can be due to the door swelling in the heat, it’s fallen out of alignment or the strike plate is loose.

 

Solution 1: Check if Your Door is Hot or Cold

In extreme temperatures, a uPVC door will expand or contract which temporarily can throw the door out of alignment. If the case is that the upvc door has expanded or contracted it should resolve itself but if it is happening on a regular basis you should look to get the door adjusted and the upvc door lock mechanism looked at by a professional Locksmith.

 

Solution 2: Tighten the Strike Plate

Sometimes the strike plate of a uPVC door locking mechanism can become loose and restrict the door and the upvc door locking mechanism from operating smoothly. If this is the case, it can often be easily solved by tightening the strike plate screws with a screw driver. Just ensure that they are tighten enough without being too tight.

 

Solution 3: Get the Door Adjusted

You can fix a door that is out of alignment by adjusting the hinges on the door so that it sits in the right position and is correctly aligned with all locking points through the uPVC door locking mechanism.

We would recommend calling out your local Locksmith to help ensure that your door is in the correct alignment and that your uPVC door lock mechanism sticking stops.

 

The Door Lock Mechanism is Stiff

If your upvc door lock mechanism is still stiff or sticking when the door is open, you’ve most likely got an issue with your upvc door lock mechanism or lock itself. There are 3 common reasons why your upvc door lock mechanism might be stiff:

  • There’s debris in the lock
  • Extreme temperature changes
  • The gearbox has broken

In some cases, with proper maintenance and care you can solve and prevent these issues but in other cases you might have to call out a Locksmith to assist and provide a solution.

 

Solution 1: Check the uPVC Door Lock Mechanism for Debris

The hinges, locking points and locks should all be free of debris and anything that might restrict the movement of the uPVC door lock mechanism. Be careful not to do anything that will gunge up the lock, instead if there is debris within the uPVC door lock mechanism try using a can of compressed air to dislodge it.

 

Solution 2: Lubricate uPVC Door Lock Mechanism

Giving your uPVC door lock mechanism a biannual service can help to keep it in order, and one thing we suggest is to lubricate the lock to ensure it maintains working correctly. We suggest either using graphite powder or a light machine oil.

You should never use WD 40 or a 3 in 1 oil on a uPVC door lock as it can damage the lock and the uPVC door lock mechanism.

 

Using Graphite Powder

You can make the movement of the key in the cylinder smoother by blowing graphite powder into the lock itself.

Top Tip: you can purchase graphite powder online but you can also use a graphite pencil as a quick hack. Try covering the key in the graphite pencil, insert it into the locks and then turn it over a few times. This should have the same effect as actual graphite powder.

 

Using a Light Machine Oil

Using a light oil, like a sewing machine oil you can lubricate the uPVC lock. Be careful to choose one that is light as oil that is too thick will gunge up the lock. Whilst you could do this yourself to properly service the lock in this way requires taking the lock itself apart and lubricating the entire uPVC door lock mechanism so we would always suggest that you call out your local Locksmith to help service your lock!

 

How to Prevent the Mechanism from Sticking or Becoming Stiff

  1. Ensure that you maintain your uPVC door lock mechanism with regular services and cleaning.
  2. Keep the door, hinges, and uPVC door lock mechanism free from debris.
  3. Call out a uPVC expert Locksmith as soon as something feels wrong so they can ensure the door remains in working order.

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