How to Repair Double Glazed Windows
There are a few telltale indicators that indicate that your double-glazed windows require repair. Water ingress or draughts through the frames are a clear indication of damage to your windows and should be fixed as soon as possible.
However, misting could be an indication that your window seals require replacing. Replacing your window seals will solve the issue, and stop draughts, leaks or condensation.
Broken Panes
One of the most frequent problems that a double-glazed window faces is broken glass. Double-pane windows are harder to break than single panes, yet accidents do happen. It is important to repair damaged glass as quickly as possible.
The first step to take is to take out any glass shards that are not completely removed that are still in the frame. Be sure to wear gloves and eye protection while doing this, since glass can be extremely sharp. Once the shards are removed, look around 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 is removed then you can begin the process of removing the old compound and glazing points (small fasteners that secure the glass to the window frame) and replacing them with new ones. This is a time-consuming procedure and requires a few tools to complete the task. This includes latex glazing putty; metallic glazing points, pliers, a heat gun, and a putty knife.
It is recommended to start at the top and work your way downwards as you remove the old points and glazing compound. This will help you avoid getting any of the paint or sash's wood stuck to your tool. Also, if you do end up removing a portion of the sash's wood, ensure that you use a chisel or utility knife instead of a chemical stripper, as this can cause damage.
When you're done, sand the bare wood. Once it's smooth, you can apply Linseed oil or a clear wood sealer to safeguard it from water and further damage.
There are a few easy fixes that you can try for a cracked double-pane window however, these methods are not a solution to the crack and should only be used as a temporary solution. Using a silicone caulk can help seal the gap, but it is important to ensure that you use a top-quality caulk and adhere to the correct application methods.
Condensation
If you've noticed water or mist between the glass panes of your double-glazed windows, it's a sign that one of your windows has a broken seal. This could be a major issue since it prevents gas or air that acts as an insulation from being trapped between two panes.
A double glazing expert can easily repair this problem. To resolve the issue, your window contractor will take out the window sash that is affected and IGU (insulating glass unit) before putting into a new gasket to create a strong and airtight seal to stop condensation from happening again. They will also apply a drying agent to aid in drying the area out and stop the condensation from occurring again.
The other reason why you may notice mist between the glass panes of windows with double glazing is because the frame has moved over time, which can break the seal that is so crucial. This can be a problem since it means that your windows won't function properly and lose their energy efficiency.
While it is possible to replace panes of a double-glazed Windows but this can be quite expensive and is normally only necessary when there are serious issues with a window that is beyond repair. If you're experiencing problems with your double-glazed windows and are still within the warranty period, you may be able to repair it at no cost or for a reduced price.
Review your warranty's terms prior to calling the company to find out if they can resolve 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 might find they are able to repair defective window units instead of replacing them completely. If this is the case, they'll likely send a specialist out to repair your double-glazed windows and will usually be able to do so quickly. This is a less expensive alternative than purchasing and installing brand new double glazed windows and is also better for the environment too!
Broken Locks & Handles
It can be a huge problem if your window handle is damaged, or it is difficult to open. You will not be able to open your windows. This also gives burglars the chance to break into your home. There are a few options to fix it however the most effective method is to contact a uPVC expert. Based on the severity of the problem they will usually be able to come and repair it for you or at the very least, provide you with a replacement handle.
There are several types of window lock, but the most popular is the Maco or Mila locks that are found on most uPVC frames. These locks are secured with bayonet-style rods, which can easily jam. If this happens, the handle's nose will be stuck in the out position and will not go back into the wedged locked position. This can be a gruelling problem, but can be fixed by following a few simple steps.
To fix the problem to fix the issue, you'll need to first take off the handle, which should be done with the help of a screwdriver. After double glazing windows repair is removed, you'll be able to see the screws holding the lock to the frame. Once the screws are removed, you can make use of pliers or a wrench to try and grab the shoot bolts. If this doesn't work then you might need to insert the tool into the gap between the window and frame (the gap could differ on the opposite side of the window) and make an "u" shape with your hand to try and grab the shoot bolts.
You can close your window by moving the handle to the closed position if you are in a position to release the bolts for shooting. But, it will not open again with the handle because the gearbox (espag or espagnolette) is most likely to be defective. It is possible to refit the gearbox without the shoot bolts so the window can be opened using the handle (and it will remain secure) However, you'll have to purchase an entirely new handle and gearbox.

Broken Hinges
It could be necessary to repair or replace your uPVC windows hinges if they are not operating smoothly. It could be due to them having been opened with too much force the hinge dropping and snapping or they were defective to begin with and it causes problems that make it difficult to use your window. It's easy to repair the hinge which means you don't have to buy new windows.
Take off the hinges. To do this, remove the screws that attach the frame to the hinges. Once the hinges have been removed then 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 is able to support the weight of the window when open and closed. You'll also want to use a wood filler to ensure that the hole left by the old hinge is completely filled and will not leak or break in the future.
After you've re-installed hinges and filled the holes, you'll need paint them. Be sure to employ a top-quality paint to ensure it lasts as long as is possible. Once the paint has dried and you are able to reconnect the window. Make sure you tighten any loose screws.
Window hinges also require regular maintenance. You can help them last longer by regularly cleaning the track of friction and lubricating the hinge mechanism. You can also use wood preservatives to shield them from the elements, which will help to prevent rust and keep them looking great for as long as is possible.
Double-glazed windows are more energy efficient than single-glazed windows and will save you money on heating. Like any other part of your house windows, they will eventually require 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 having them looked at by our experts in Preston.