How to Repair Double Glazed Windows
There are a few distinct signs that your double glazed windows need repair. Draughts and water ingress are obvious signs of damage to the frames of your windows. They should be repaired as soon as is possible.
The misting could also mean that the window seals are in need of replacement. Replacing the window seals will solve the problem, and prevent leaks, draughts or condensation.
Broken Panes
Broken glass is among the most common problems that double-glazed windows face. Double pane windows are more difficult to break than single-pane windows however, accidents can occur and you'll need to repair a broken window as soon as you can.
The first step is to get rid of any loose shards of glass that remain in the frame. Wear gloves and eye protection while removing the glass as it can be very sharp. Check the floor for any fragments that have fallen off after the shards have been removed. It's also a good idea for you to pull out any hooks made of metal that hold 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 into the frame of the window) and replacing them with new ones. It's a lengthy procedure that requires some tools. These include latex glazing putty, metal glazing points, pliers, a heat gun; and a putty knife.
It is best to begin at the top and work your way down when removing the old points and glazing compound. This will help you avoid getting any of the sash's wood or paint stuck to your tool. If you have to remove a portion of the wood from the sash, make use of an utility knife or chisel instead of chemical strippers which could cause damage.
When you're done ensure that you remove any wood that is not sanded to smooth it. When the wood is smooth, you can seal it using clear wood sealer or linseed. This will help protect it from water and further damage.
There are a few quick fixes that you can try for a cracked double-pane window, but these methods will not repair the crack and should be used only as a temporary solution. Using a silicone caulk can aid in sealing the gap, but it is important to ensure that you use a top-quality caulk that is applied using the proper methods.
Condensation

If you've noticed water or mist between the glass panes of your double glazing, it's a sign that one of your windows is suffering from a failing seal. This could be a cause for concern because it blocks the gas or air that is used to insulate from being trapped between the two panes of glass which means it cannot do its job properly and this will lead to temperature changes that result in condensation forming.
Fortunately, this can be easily repaired by a double glazing expert. To fix the problem, your window contractor will remove the affected window sash and IGU (insulating glass unit) before blowing in a new gasket to create a strong and airtight seal that will prevent condensation from happening again. They will also employ drying agents to help the area dry out and prevent the condensation from recurring.
The other reason why you might notice a misty appearance between the glass panes of windows that are double-glazed is that the frame has moved over time, which can break the all-important seal. This can be a serious problem, as your windows won't function properly and lose their energy efficiency.
It is possible to replace a double-glazed window's glass, however, this can be costly and is typically only needed when the window is beyond repair. If you have a problem with your double-glazed windows and are still within the warranty period, you may be able to get it repaired at no cost or for a reduced price.
Check your warranty terms before making contact with the company to determine whether they can solve the problem without replacing the whole window. Double-glazed windows usually have an assurance of 10 to 20 years. You may find that the company is able to fix the window unit instead of replacing it. If this is the case, then they'll likely send a specialist out to fix your double glazed windows and are usually capable of doing it quickly. This is a much less expensive alternative to purchasing and installing new double-glazed windows. It's also better for the environment!
repairing double glazing windows & Handles
It could be a major issue if the handle of your window is damaged or broken, or if it is difficult to open. You won't be able use your windows. It also gives burglars an opportunity to gain entry into your home. There are several solutions to address the issue however the most effective method is to speak with an uPVC expert. Based on the severity of the problem they will usually be able to fix it for you or at a minimum, give you a replacement handle.
There are a number of different kinds of window locks. However, the most well-known is the Maco or Mila lock that can be found on the majority of uPVC frames. These locks employ bayonet rods to lock, and they are able to easily seize up. The handle's nose is stuck in the popped-out state, and it is unable to return to the wedged locked position. This can be a very frustrating problem, but it can be resolved by following a few easy steps.
To fix the issue, you'll need to take off the handle. This should be simple enough with the help of a screwdriver. After removing the handle, you will be able see the screws that hold the lock to frame. Once the screws have been removed you can then use a wrench or pliers to try to grab the bolts for the shoot. If this doesn't work then you can put the tool between the frame and the window (the gap may be different between the two windows) and create an "u" shape using your hand to grab the bolts.
If you are able to unblock the bolts that shoot, then you can shut your window by adjusting the handle to a closed position. The gearbox (espag or espagnolette.) is probably faulty, so it will not open when you pull the handle. It is possible to repair the gearbox without the shoot bolts, so the window can be opened by the handle (and it will remain secure) however, you'll have to purchase the new handle and gearbox.
Broken Hinges
You may need to repair or replace your uPVC windows hinges if they aren't functioning smoothly. It could be due to them having been opened with too much force, the hinge dropping and snapping or they had a fault to begin with and it causes problems that make using your window difficult. Fortunately, replacing the hinge is easy and quick, so there's no need to buy a new window and you can have your old ones fixed instead.
Take off the hinges. This is done by unscrewing the screws that secure the hinges to the frame. After the hinges have been removed you can replace the boards using plywood that has been cut to the correct size. Make sure that the plywood you choose to use is larger than the original one to ensure it is able to support the weight of the window both it is closed and open. Use wood filler to ensure the hole left by the hinge of the past does not leak or break.
Once you've replaced the hinges and filled the holes, you'll have to paint them. Make sure you use a high-quality paint to make sure it lasts as long as possible. Once the paint is dry it is possible to reattach the window. Secure any loose screws.
Regular maintenance is essential for hinges on windows. Cleaning the friction stay track and lubricating the hinge mechanisms will ensure they last longer. You can also apply wood preservatives in order 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 can help you reduce your heating bills, as it's more energy efficient than windows with a single glazing. Like any other part of your house windows will eventually require to be replaced or repaired. Our Preston experts are able to assist you if there are indications that your double-glazed windows aren't working properly.