How to Repair Double Glazed Windows
There are some telltale signs your double-glazed windows need to be fixed. Draughts and water ingress are clear indications of damage to the frames of your windows. They must be fixed in the shortest time possible.
The misting could also mean that your window seals are damaged and in need of replacement. Replacing the seals will fix the issue and stop condensation, draughts or leaks.
Broken Panes
One of the most frequent problems that a double-glazed window faces is broken glass. Double pane windows are more difficult to break than single pane windows, accidents do happen and you will want to repair a broken window as quickly as possible.
The first step to take is to get rid of any glass fragments that are loose that are still in the frame. Make sure to wear gloves and eye protection while doing this, since glass can be extremely sharp. Once the shards are removed, check the floor of your home for other pieces that are loose. It's also a good idea for you to pull out any metal hooks holding the panes together.
Once the glass has been removed, you will have to remove the old glazing compound (small fasteners which pin the glass into the window frame), and replace them with new ones. This can be a lengthy procedure and requires some tools to get the job done. You'll need latex glazing putty, metal glazing points, pliers, a heatgun and a putty blade.
It is recommended to begin at the top and work your way down when removing the old points and glazing compound. This will keep any paint or wood that is left in the sash from sticking to the tool. If you need to take off some of the wood from the sash, make use of the utility knife or chisel instead of chemical strippers, which can cause damage.
After you're done then sand the wood. Once the wood is smooth then you can seal it using clear or linseed wood sealer. This will help protect it from water and further damage.
There are a few simple fixes to repair cracked double pane windows. However, these methods are not a solution to repair the damage and should only serve as an interim solution. Utilizing silicone caulk will aid in sealing the gap. However it is crucial to use caulk of high-quality and with the correct application techniques.
Condensation
If you notice any moisture or mist between the glass panes of your double glazing it is a sign that the window seal isn't working. This could be a cause for concern because it stops the gas or air that is used to insulate from getting trapped between the two panes of glass, so it won't do its job effectively and can cause temperature fluctuations which can cause condensation to form.
Fortunately, this can be fixed by an expert in double glazing. To resolve the issue your window company will remove the affected window sash and IGU (insulating glass unit) before putting in a new gasket to create a strong and airtight seal that will prevent condensation from happening again. They'll also apply a specific drying agent to aid in drying the area and help stop the condensation from occurring again.
There may be a the glass panes are a little cloudy in double-glazed windows, if the frame has changed over time. This can break the seal. This could be a problem since it means that your windows will not function correctly and lose their energy efficiency.
It is possible to change a double-glazed window's panes, however, this can be costly and is usually only required in the event that the window is beyond repair. However, if you've discovered the signs of a problem with your double-glazed windows and you're still within the warranty period, then it may be possible to get the issue fixed for free or at least at a reduced cost.
Check your warranty terms before making contact with the company to determine whether they can fix the issue without replacing the whole window. Double glazed windows are typically covered by warranties of between 10 to 20 years, which means you might find that they are able to repair damaged window units rather than replacing them completely. If this is the case, they will likely send a professional to repair your double-glazed windows. They can usually complete the task quickly. This is a much less expensive alternative to buying and installing new double-glazed windows. It's also better for the environment!
Broken Locks & Handles
If the handle on your window is broken or hard to open, it could be a huge issue as it makes it impossible to use your windows. This can also give burglars the chance to break into your home. There are many solutions to this problem, but the best option is to speak with an uPVC professional. They can fix the issue for you, or at least provide you with a replacement handle.
There are many different types of window locks. However, the most popular is the Maco or Mila lock that can be found on the majority of uPVC frames. These locks utilize bayonet-style rods for locking and are very easy to seize up. The handle's nose is stuck in the popped-out state, and it won't return to the wedged locked position. This can be a gruelling problem, but can be resolved with a few easy steps.
To fix the issue you must first take off the handle, which should be done with the aid of a screwdriver. After you have removed the handle, you'll be able to see the screws that secure the lock to the frame. After the screws have been removed, you may try to grab the bolts with the help of a wrench or a pair pliers. If this doesn't work, you may need to insert the tool into the gap between the window and frame (the gap may be different on each end of the window) and create an "u" shape using your hands to attempt to grab the shoot bolts.
If you manage to remove the bolts for shooting, you can close the window by adjusting the handle into the closed position. But it won't be able to open again by the handle, since the gearbox (espag or espagnolette) is most likely to be defective. It is possible to repair the gearbox without the shoot bolts so the window can be opened by the handle (and will still be secure) however, you'll need to order an entirely new handle and gearbox.
Broken Hinges
It is possible to replace or repair your uPVC windows hinges if they aren't operating properly. If this is because of them being opened by too much force, the hinge snapping or dropping or if they were defective in the first place and it causes problems that make it difficult to use your window. It's easy to replace the hinge, so you don't have to buy new windows.
First, you'll need to remove the existing hinges. To do this, unscrew the screws that hold the frame to the hinges. After the hinges are removed you can replace the boards using plywood that has been cut to the right size. The plywood should be thicker than the original to support the weight of the window when it is closed and opened. You'll also need to use wood filler to ensure that the hole that was left by the hinge is completely filled and will not leak or loosen in the future.

After you've filled in the holes and put on the hinges, you will have to paint the doors. Use a quality paint to ensure that it lasts as long as is possible. After the paint has dried and you are able to reattach the window. Secure any loose screws.
Window hinges also require regular maintenance. local double glazing repairs can help them last longer by cleaning them regularly on the tracks of friction and lubricating the hinge mechanism. You can also apply a wood preservative to shield them from the elements, which will help to keep them from corrosion and maintain their appearance for as long as you can.
Double-glazed windows are more energy efficient than single-glazed windows, and will save you money on heating. Like any other part of your home windows will eventually require to be repaired or replaced. Our Preston experts are able to assist you if you notice any signs that your double-glazed windows aren't working correctly.