How to Repair Double Glazed Windows
There are a few telltale indications that your double glazed windows require repair. Obviously, water ingress or draughts leaking through the frames are an obvious indication of damage to your windows and must be repaired as soon as possible.
However, misting could be a sign that your window seals require replacement. Replacing the seals will fix the problem and prevent condensation, draughts, or leaks.
Broken Panes
One of the most frequent issues a double-glazed window face is broken glass. Double-pane windows are more difficult to break than single panes, but accidents can happen. It is important to repair damaged glass as quickly as you can.
The first step to take is to get rid of any glass shards that are not completely removed that are still in the frame. Be sure to wear eye protection and gloves when doing this, as glass can be sharp. Once the shards are removed, check the floor of your home for any extra pieces of glass that may be left. Also, it's an excellent idea to look for any hooks made of metal that might be keeping the panes in place and remove them too.

Once the glass is removed, you'll have to take off the old glazing compound (small fasteners that fix the glass in the window frame), and replace them with new ones. This can be a lengthy process and you will need a few tools to accomplish the task. This includes latex glazing putty; metallic glazing points; pliers; 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 the tool. If you need to remove some of the wood from the sash, employ the utility knife or Chisel instead of chemical strippers, which can cause damage.
When you're done then sand the wood. Once the wood is smooth you can seal it using clear wood sealer or linseed. This will shield it from water and further damage.
You can make some quick solutions to repair cracked double pane windows. However, these methods will not repair the damage and should be used as a temporary solution. Using a silicone caulk can help to seal the gap, but it is important to make sure that you choose a high-quality caulk and adhere to the correct application techniques.
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 has a broken seal. This could be a significant issue as it stops the gas or air that acts as an insulation from getting trapped between the two panes.
Fortunately, the issue can be fixed 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 putting into a new gasket to create a strong and airtight seal to stop condensation from happening again. They will also apply drying agents to help the area dry out and prevent the condensation from happening again.
You might also notice a mist between glass panes in double-glazed windows, when the frame has moved over time. This could cause the seal to break. This can be a problem since it means that your windows will not function correctly and lose their energy efficiency.
It is possible to replace double-glazed window's panes however, it can be costly and is typically only needed in the event that the window is beyond repair. However, if you've spotted the signs of a problem with your double-glazed windows and are still within the warranty time and the window is still in good condition, it might be possible to have it fixed for free or at a lesser cost.
Review your warranty's terms prior to making contact with the company to determine whether they can solve the issue without having to replace the entire window. Double-glazed windows typically come with a guarantee of 10 to 20 years. It is possible that the company is able to repair the window instead of replacing it. If this is the case, then they'll likely send a specialist out to repair your double-glazed windows and will typically be in a position to complete the repair quickly. This is a cheaper alternative to buying and installing brand new double-glazed windows, and it's better for the environment too!
Broken Locks & Handles
It can be a huge problem if your window handle is broken, or if it is difficult to open. You won't be able use your windows. It also gives burglars the chance to break into your house. There are a number of ways to fix this, but the best option is to speak with a uPVC professional. Based on the severity of the problem they are able to usually come and repair it for you, or at the very least, provide you with a replacement handle.
There are repairing double glazing windows of different kinds of window locks, however the most popular is the Maco or Mila lock that is found on the majority of uPVC frames. These locks lock with rods that resemble bayonets, which could easily jam. The handle's nose is stuck in the popped-out position, and it won't return to the wedged locked position. This can be a very annoying issue, but it can be solved with a few simple steps.
To fix the problem, you will need to first remove the handle, which should be easy enough with the help of a screwdriver. Once the handle has been removed, you should then be in a position to see the screws that hold the lock to the frame. Once the screws are removed, you can employ pliers or a wrench to try to grab the shoot bolts. If this doesn't work then you can place the tool between the frame and the window (the gap could be different between the two windows) and then make an "u" shape with your hand to grab the bolts.
If you can manage to remove the shoot bolts, then you can shut your window by adjusting the handle into the closed position. The gearbox (espag or espagnolette.) is most likely damaged and won't open with the handle. You can replace the gearbox (espag or espagnolette) without the shoot bolts in order that the window can still be opened by the handle.
Broken Hinges
You may need to replace or repair your uPVC windows hinges if they're not operating smoothly. It could be because the window was opened too forcefully, or that the hinge snapped. It could also be that they have a defect. It's easy to repair the hinge so you don't need to buy new windows.
First, you'll need remove the existing hinges. To do this, loosen the screws that hold the frame to the hinges. Once you've removed the hinges and replaced them with plywood boards cut to the right size. Make sure that the plywood you choose to use is thicker than the original board to ensure it can support the weight of the window both shut and open. Use wood filler to ensure that the hole left behind by the hinges of the past does not leak or loosen.
Once you've replaced hinges and filled the holes, you'll need to paint them. Make sure you employ a top-quality paint to ensure it lasts as long as it can. After the paint has dried and you are able to attach the window again. Tighten any loose screws.
Window hinges also require regular maintenance. You can make them last longer by regularly cleaning the tracks of friction and lubricating the hinge mechanism. You can also use wood preservatives in order to shield them from the elements. This will help prevent rusting and ensure they look great for as long as you can.
Double-glazed windows can help you save money on heating, as it is more energy efficient than windows with only one glass. However, like any other part of your home, your windows are susceptible to wear and tear and may require repair or replacement as time passes. Our Preston experts can help you if you observe any indications that your double-glazed windows are not working correctly.