How to Repair a Double Glazing Window

Double glazing repairs are often best left to experts as very specific tools are required. Professional repairs come with a warranty which you cannot get if you try it yourself.

Common problems include discoloured UPVC frames misting between glass panes and broken locks or handles. If you’re experiencing any of these, it is probably time to get in touch with a double glazing repair.

Broken Glass

If a window cracks it is crucial to fix it quickly. This will prevent the crack from spreading into a spider’s web and will keep water, cold and other debris out of the home. Many times, homeowners can repair the cracks, without having to replace an entire window pane.

The cracked glass must be first removed from the frame. This can be done by hand using a putty knife or other deglazing tools. When dealing with broken glass, it is advised to wear gloves and eye protection. Once the glass has been removed and disposed of, it should be put in a secure storage space and then disposed of in a proper manner.

Once the old sealant and glazing points have been removed, the frame should be thoroughly cleaned with a wire brush as well as a damp cloth. It is recommended to use the hair dryer or heat gun to soften the remaining sealant and glazing, making it easier to remove. After cleaning the frame, it’s a good idea apply a small amount linseed to the rabbets in which the glass will be placed to ensure that the glass adheres to the frame.

Then, cut the glass to the right size to ensure it fits in the frame. If the gap is too large, you can use a piece glass repair film to fill in the gap and hold in the new glass. If the gap is smaller, you can apply a piece of clear tape or concealing film on both sides of it to stop it from spreading.

Once the glass is cut to the correct size, it is able to be placed in the frame and secured using glazing or putty. Then, it’s a good idea to touch up the paint on the frame if it is necessary. If the glass has wood molding around it, you should remove these pieces before installing the new pane. They can be damaged in the process of removing the old window and replacing it.


Condensation is a typical issue when using double glazing. If condensation is present it is important to ventilate the room as often as possible, especially during times of high humidity. This will reduce condensation. A dehumidifier can also be helpful. If you are unable to manage to keep the condensation at bay, you must seek out a professional to fix your windows as soon as possible. This is because a build up of condensation will lead to black mould which could pose a serious health hazard.

Failing to get your double glazed window repaired can result in damaged or degrading frames, and the gaps that insulate the glass panes will be affected. This could allow colder air to enter your home, which can affect the efficiency of heating.

It is a good idea to contact the company that fitted your double glazing to find out whether they offer warranty support as they might be in a position to repair or replace your windows for free particularly if you bought the units recently. Contact them to find out for advice or suggestions on how you can prevent condensation from happening in the future.

Use a non-abrasive product like cerium dioxide or iron oxide that you can apply with an abrasive cloth. Then clean the window with a cloth until it’s completely dry.

Another option is to make small holes in double-glazed windows, and inserting a desiccant pack inside. This will help to absorb any moisture which has accumulated between the glass panes. This is a good short-term fix. It is important to remember that the condensation will go away when you have sealed the hole.

Professionals can usually resolve the issue of condensation through draught sealing or replacing the seal on the inside of the window. This can be accomplished by simply replacing the broken seal. However, in some instances they may recommend replacing the entire window. If there is a lot of condensation visible on the outside of your window, you may be advised to replace the entire frame.


Double glazing is a great investment for any home, keeping your property warm and blocking out outside noise. It also improves your energy efficiency, thereby saving you money on heating expenses. However, if double glazed windows start to get cloudy it’s crucial to act fast to prevent further damage.

Misting can be a sign that the seal between the two panes of glass has broken down, leaving moisture trapped between the windows. This is a problem that could be difficult to fix. The best option is to contact a professional window installer who will replace the double-glazed sealed unit.

Cleaning your double-glazed windows regularly is a good idea to prevent condensation. This will ensure they are in good condition and increase their lifespan. Use a vacuum with a brush, and focus on the areas where dirt tends to accumulate.

Having your windows professionally cleaned can be a great way to keep their appearance. It will also prevent build-up of grime that may cause the seals to weaken and let moisture in. You can also try to eliminate the fog yourself with a spray bottle containing an anti-fog liquid. This method is time-consuming and requires drilling holes in the double-glazed window. This method is not recommended unless the DIYer is highly experienced.

If your double-glazed windows are covered under warranty, then contact the installers and ask for an exchange if they are unable to repair them. In many instances the company will be able repair or replace the sealed units, and offer a warranty for new windows.

Double-glazed windows that have been blown occur when the seal cracks between the two panes which allows cold air to pass through the window, and warm air to escape. The spacer bar within the glass is surrounded by moisture, which eventually builds up and gives the appearance of mist. While it’s possible to repair double-glazed windows that have been blown by replacing the glass, this won’t solve the condensation already within the window.

Broken Frame

If the frame of your double glazed window is damaged and you need to replace it. Find a local glass manufacturer. They will offer new frames at a fair price and then install them swiftly. They will also assist you with any queries you might have. They will also be able to guide you on what kind of window is the best one for your home.

The first step is to take the window pane that is currently in the frame. This is a job that can be accomplished by hand if you wear gloves and take the time to carefully pull out each piece of glass. This will stop cracks from spreading even more. The glass should be put in a box, or another suitable container, for secure disposal.

Then, you’ll need to remove any old putty holding the glass in position. You can either chisel it away or use a heat gun to soften it. After the putty has been removed, take out the nails or clips from the frame. Then, clean the wood with a wirebrush until it is free of dirt and painted.

Reassembling your double-glazed window frame can be done once the wood is cleaned and double Glazing repair sanded. It’s also coated with a protective sealer. Utilize a caulk gun to apply a thin silicone sealant to the frame’s edges, both inside and outside. This will keep the weather out and help prevent the build-up of moisture up, which can lead to the frame to rot and cause damage.

After the caulk has been applied, you are now able to fit the glass into the frame. The glass points are metal triangular triangles that hold the glass in place. They should be pushed firmly into the frame and then pressed against the glazing or putty to ensure they don’t move. You can then apply more glaziers compound to the frame and glass. It should dry before you paint. This is to be done in a manner that matches the rest of your windows. You’ll also need to add any trim or molding that was taken off when the frame was taken apart.