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How to Repair Double Glazed Windows
There are certain indicators that tell you your double-glazed windows need to be repaired. Draughts and water ingress are obvious indications of damage to the frames of your windows. They should be repaired as quickly as possible.
However, misting can also be a sign that your window seals are in need of replacement. Replacing the window seals will solve the problem, and stop draughts, leaks, or condensation.
Broken Panes
One of the most common problems with double-glazed windows is broken glass. Although double-pane windows are less likely to break than single-pane ones however, accidents can occur and you'll want to repair a damaged window as soon as is possible.
repairing double glazing windows to take is to get rid of any glass shards that are not completely removed that are still in the frame. Wear eye protection and gloves when you remove the glass because it is extremely sharp. Check the floor for any loose pieces once the shards have been removed. It is also recommended to look for any metal hooks that might be holding the panes together and take them out as well.
After the glass has been removed, you will need to remove the old glazing compound (small fasteners that hold the glass into the frame of the window) and replace them with new ones. This can be a lengthy procedure and requires some tools to accomplish the task. You'll need latex glazing putty, pliers, glazing points, pliers heat gun and a putty blade.
It is best to start at the top and work your way downwards as you remove the old points and glazing compound. This will prevent getting any of the sash's wood or paint stuck to your tool. If you need to remove a portion of the wood from the sash make use of a utility knife or a Chisel instead of chemical strippers, which can cause damage.
When you're done, sand the bare wood. Once the wood is smooth you can seal it with clear wood sealer or linseed. This will help protect it from water and further damage.
There are a few simple fixes to repair a cracked double pane window. But these fixes will not repair the damage and should only serve as an interim solution. The use of a silicone caulk may help to seal the gap, but it's important to ensure that you use a high-quality caulk and adhere to the correct application methods.
Condensation
If you notice a haze of moisture or mist between the glass panes of your double glazing, this means that your window seal has failed. This could be a problem because it prevents gas or the insulating air from being trapped between the two panes of glass, so it won't do its job correctly and this can cause temperature fluctuations that cause condensation to form.
Fortunately, this can be easily repaired by an expert in double glazing. To fix the problem, your window contractor will remove the affected window sash as well as the IGU (insulating glass unit) before blowing in a new gasket to create a sturdy and airtight seal that will prevent condensation from occurring again. They'll also employ a drying agent to help dry the area and prevent the condensation from occurring again.
You might also notice a mist between glass panes in double-glazed windows, if the frame has changed position over time. This can break the seal. This can be a serious issue as windows that are not functioning effectively and lose energy efficiency.
Although it is possible to replace the panes of a double-glazed Window however, it can be extremely expensive and is normally only necessary if there are severe issues with a window that is beyond repair. If you have a problem with your double-glazed windows and are still within the warranty period then you might be able to get it repaired at no cost or for a reduced price.
It's worth checking the terms of your warranty before you contact the company to determine whether they can solve the problem without having to replace the entire window. Double-glazed windows are usually covered by warranties ranging from 10 and 20 years, so you may find that they can repair the defective window units instead of replacing them completely. If this is the case, then they'll likely send a specialist to repair your double glazed windows and will usually be in a position to complete the repair quickly. This is a cheaper alternative to buying and installing new double-glazed windows. It's also better on the environment!
Broken Locks & Handles

If your window handle is damaged or difficult to open, it could be a huge issue as it makes it impossible to use your windows. It also gives burglars an opportunity to break into your home. There are a number of options to address this issue, but the best option is to get in touch with a uPVC professional. They will be able to fix the issue for you, or at least give you a replacement handle.
There are many types of window lock, but the most popular is the Maco or Mila locks that are found on most uPVC frames. These locks lock with rods that resemble bayonets, which could easily jam. If this happens, the handle's nose will remain in the popped out position and won't be able to return to the locked position wedged. This can be a very annoying issue, but it is able to be fixed with a few simple steps.
To resolve the issue to fix the issue, you'll need to first remove the handle. This should be easy enough with the aid of a screwdriver. After removing the handle you will be able see the screws that secure the lock to frame. After the screws have been removed, you can attempt to grab the bolts using a wrench or pair of pliers. If this fails then you might need to insert the tool through the gap between the window and frame (the gap could be different at each end of the window) and create a "u" shape with your hands to attempt to grab the shoot bolts.
You can shut your window by moving the handle back to its closed position if you're in a position to release the shoot bolts. The gearbox (espag or espagnolette.) is likely to be damaged, so it will not open with the handle. You can refit the gearbox (espag or espagnolette) without the shoot bolts, so that the window can be opened by the handle.
Broken Hinges
If your uPVC window hinges aren't functioning properly and smoothly, you might need to repair or replace them. It could be because the window was opened too vigorously, or that the hinge snapped. They could also have a problem. It's simple to fix the hinge, which means you don't have to purchase new windows.
Take off the hinges. To do this, unscrew the screws that attach the frame to the hinges. Once the hinges have been removed you can replace the boards using plywood that has been cut to the correct size. Make sure the plywood is more robust than the original board to ensure it can support the weight of the window both it is closed and open. You'll also want to fill the hole with wood to ensure that the hole created by the hinge is filled to the brim and won't leak or become loose in the future.
After you've filled in the holes and put on hinges, you'll have to paint the doors. Use a good paint to make sure it lasts as long as possible. Once the paint is dry and you are ready to re-attach the window and tighten any loose screws.
Regular maintenance is also important for hinges on windows. Cleaning the track of friction and lubricating the hinge mechanisms will ensure they last longer. You can also apply wood preservatives in order to shield them against the elements. This will stop rusting and keep them looking good for the longest time you can.
Double-glazed windows are more energy efficient than single-glazed ones, and can help you save money on heating. Like any other part of your house, your windows will eventually need to be repaired or replaced. If you're experiencing any of the signs that your double-glazed windows aren't functioning properly, it's worth getting them looked at by our experts in Preston.