How to Repair Double Glazed Windows
There are several tell-tale indications that your double glazed windows require repairs. Obviously, water ingress or draughts through the frames are an obvious indication of damage to your windows and must be fixed in the shortest time possible.
Misting may also indicate 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 common problems with double-glazed windows is broken glass. Double pane windows are more difficult to break than single-pane ones However, accidents do happen and you will want to repair a damaged window as soon as you can.
Remove any loose glass fragments that may still be in the frame. Don't forget to wear gloves and eye protection while doing this, since glass can be sharp. Once the shards have been removed, check the floor of your home for extra pieces of glass that may be left. It's also an excellent idea to remove any hooks that hold the panes together.
Once the glass is removed, you can begin the process of removing the old compound and glazing points (small fasteners that fix the glass into the window frame) and replacing them with new ones. It's a lengthy process that requires a few tools. You will need latex glazing putty, pliers, glazing points, pliers, a heatgun and a putty blade.
When removing the old glaze compound and points, it's recommended to begin at the top of the sash and move down. This will ensure that you don't end up getting any of the sash's paint or wood stuck to your tool. Also, if you do end up removing some of the sash's wooden pieces, make sure you use a chisel or utility knife instead of a chemical stripper, as this can cause damage.
After that, sand the bare wood. When it's smooth you can apply linseed oil or a clear wood sealer to shield it from water and further damage.
There are a few quick fixes to fix a cracked double pane window. However, these solutions won't fix the problem and should only serve as an interim solution. Use of silicone caulk will help seal the gap. However it is essential to use a high-quality caulk and proper application techniques.
Condensation
If you notice any moisture or mist between the glass panes of your double glazing it means that your window seal has failed. This can be a serious problem as it prevents the insulating gas or air from being trapped between two panes.
A double glazing expert can fix this issue easily. Your window repair professional will take off both the window sash as well as the IGU (insulating unit) to correct the issue. Then the gasket will be blown into to form an airtight seal and prevent condensation from happening again. They'll also employ a drying agent to help dry out the area and help stop the condensation from occurring again.
There may be a mist between glass panes in double-glazed windows if the frame has changed over time. This could crack the seal. This could be a major problem, as your windows won't function properly and lose their energy efficiency.
It is possible to change a double-glazed window's panes, but this can be expensive and is usually only required if the window is beyond repair. If you have a problem with your double-glazed window but are still within the warranty period then you may be able to get it repaired at no cost or for an affordable cost.
Check your warranty terms before making contact with the company to determine if they can resolve the problem without having to replace the entire window. Double glazed windows are typically covered by guarantees of between 10 and 20 years, so you might find they're able to repair the defective window units instead of replacing them completely. If this is the case you're in, they'll send a specialist out to fix your double-glazed windows. They can usually accomplish this in a short time. This is a less expensive option than buying and installing brand new double-glazed windows and is also better for the environment too!
Broken Locks & Handles
If your window handle is damaged or difficult to open, it can be a huge issue as it prevents you from using your windows. This could also give burglars the opportunity to break into your home. There are many options to address this issue, but the best option is to speak with a uPVC professional. They will be able to fix the issue for you, or at the very least give you a replacement handle.

There are a few different types of window lock, however, the most well-known is the Maco or Mila locks which are typically found on uPVC frames. These locks utilize bayonet-style rods to lock and these are able to easily seize up. If this happens, the handle's nose will be stuck in the popped out position and will not go back into the locked wedge. This could be a annoying problem, but it can be solved by following a few steps.
To fix the problem you must first remove the handle, which should be easy enough with the help of a screwdriver. Once the handle has been removed, you will be aware of the screws that secure the lock to the frame. After the screws have been removed, you can use a wrench or pliers to try and grasp the bolts that hold the shoot. If this is unsuccessful, you may need to insert the tool through the gap between the window and frame (the gap can be different at each end of the window) and make an "u" shape with your hands to try and grab the shoot bolts.
You can close your window by adjusting the handle to a closed position if in a position to release the bolts for shooting. The gearbox (espag or espagnolette.) is likely to be damaged, so it will not open with the handle. It is possible to refit the gearbox without the shoot bolts, which means that the window can be opened using the handle (and will still be secure) however, you'll have to purchase an entirely new handle and gearbox.
Broken Hinges
It could be necessary to replace or repair your uPVC windows hinges if they are not operating smoothly. Whether this is due to them having been opened with too much force, the hinge snapping or dropping or if they were defective to begin with the issue could cause issues that make it difficult to use your window. Fortunately it is simple and quick and doesn't require you to buy a new window and you can have your old windows repaired instead.
Take off the hinges. This is accomplished by removing the screws that attach the hinges to the frame. After you've removed your hinges and replaced them with plywood boards that are cut to the proper dimensions. Make double glazing repair that the plywood you choose to use is larger than the original one to ensure it can support the weight of the window both open and closed. It is also recommended to use wood filler to ensure that the hole created by the hinge is filled completely and will not leak or break in the near future.
After you've filled in the holes and put on the hinges, then you'll require painting the doors. Make sure you use a high-quality paint to make sure it lasts as long as it can. When the paint is dry, you can re-attach the window and tighten any loose screws.
Regular maintenance is essential for window hinges. You can make them last longer by cleaning them regularly on the track of friction and lubricating the hinge mechanism. You can also use wood preservatives to shield them from the elements. This will prevent rusting and ensure they look great for as long as you possibly can.
Double-glazed windows are more energy efficient than single-glazed ones, and can help you save money on heating. However, like any other aspect of your home, your windows will show wear and tear and might need repairing or replacing over time. Our Preston experts are able to assist you if you notice any signs that the double-glazed windows you have aren't working properly.