3 Reasons Your Double Glazed Window Repair Is Broken (And How To Fix It)

7 min read

Double Glazed Window Repair

Double glazing is a fantastic investment in energy efficiency. It prevents heat loss during the winter months and helps keep your home cool in the summer. Having your double glazed windows fixed when they need to is a great way to ensure that they function properly.

Over time condensation and misting could be detrimental to your double-glazed windows. Double glazed windows may be difficult to open and close.

Broken Panes

A unruly ball or a flying stone from your lawnmowers, or a storm that is strong enough can break your double pane windows which can expose your home to the elements. While a damaged window may be difficult to repair however, you don’t have to replace it entirely. The insulated glass between two panes of glass is still in good shape, so you can repair your double-paned windows yourself.

To begin, you’ll need to take the broken glass out of the frame. This is a messy job, and you’ll want to take care to prevent glass shards from falling on the floor or slipping out of the frame. Use a pair of gloves to protect your hands and a cloth to protect the area around the broken glass to avoid further cuts or breakage. After you have removed the broken glass clean the frame of the window thoroughly to get rid of any sealant or debris. It is essential to sand rough areas of your frame to create an even surface for your new glazing.

After cleaning the frame and removing the dust, you can apply another layer of glass on the seam where you removed the broken pane. This is the best way to keep your Window Doctor sealed and protected, and it will save you money by preventing drafts and water from entering the house. The next step is to choose the material for your glazing. There are a variety of options, including clear tape that is more durable than regular tape and prevents further cracking of your window, or glazing film that is similar to clear plastic wrapping. This choice has the benefit that it can be painted to match your frame, and can also shield your windows from snow and ice.

No matter what material you choose it is important to press the glaziers points into that seam where the putty meets your frame. They will help hold the glass in place, and help it adhere to the frame. Hardware stores sell glazier’s point ropes, which you can use onto the frame rabbets.


If you’re experiencing problems with condensation, it is recommended to contact the window manufacturer. Many companies offer warranties and guarantees that will cover these problems. Fogging and condensation between panes of glass is a clear sign that the seals between your windows are damaged and can only be repaired by an expert who will fix both panes.

It’s a complicated process that requires special tools to remove and replace the old window. A professional can handle this task and supply the equipment. Utilizing these tools could be dangerous, Window Doctor so it is always best to leave this kind of work to professionals.

Wear safety gloves and glasses if you choose to do it yourself. You may be exposed to flying glass fragments. It is essential to take out all putty or metal glazing points from the grooves that will receive the new window. Wire-brushing the frame or vacuuming it with a damp cloth is also recommended. Once the frame has dried, you’ll need to order another piece of glass that is 1/8″ shorter in both directions than the existing window doctor near me. Check the glass’s fit into the grooves.

You will require a layer of silicone caulk in the grooves of your frames to ensure that your new glass is securely installed. Once the caulk has dried and is dry, you must smooth it out and make any necessary adjustments. The wood molding will then be put back in place.

Double-glazed windows may be difficult to open or close when the weather is extremely changing. Extreme temperatures can cause the frames of double-glazed windows to expand or shrink, causing them to sag and stick. Try wiping the frames with water and lubricating them if this is the case however it is better to seek help from the company who installed your windows.


Misted Double Glazing is a window problem that occurs when moisture gets trapped between the glass panes of double glazed windows. Double glazing is comprised of two panes which are separated by a space that is filled with argon to improve thermal efficiency. This creates a airtight seal that keeps warm indoor air inside, and cold air outside.

The seal could become damaged over time and moisture may build up between the glass panes, causing them to become cloudy. This happens because the sun’s heat causes the gap between the panes of windows, causing the water to evaporate.

This is a natural process however if it occurs between the panes of the window it can be a problem because it won’t be able to regulate the temperature in the room. Instead the temperature outside the window will influence the temperature indoors. If you notice your double glazed windows are becoming cloudy, contact the experts at Northfield Glass to investigate.

We can replace a single blow sealed unit, without having to replace the entire window. This is much less disruptive than a full replacement. Our misty window repair involves taking off the glass unit, washing it, then replacing it with a new one to create an airtight seal.

There are companies within the field which claim to drill holes into your existing misted windows and inject chemicals into them that they say removes the fog & condensation however, we don’t recommend this method. This is not only unsightly but could also damage your toughened glass and leave you with a window which does not function properly.

If you don’t fix the issue immediately it could result in mould, which can not only cause damage to the window, but cause health risks for your loved ones. Moisture can also cause other issues within your home, such as dampness or rot. In some cases the window might need to be completely replaced.

Blown or failed

Modern double-glazed windows come with two glass panes that have an inert gas or air in between them. This improves their thermal efficiency by keeping heat in and cold out. Over time the gas will become depressurized, causing various issues.

One of the most frequent is condensation occurring between the panes. It is not a sign of a window failure, but it could indicate that you should reseal them. Condensation could also be an indication of broken double glazing, which could need to be replaced.

Double-glazed windows may also cause drafts. This could be because of the seal being damaged or handle that is broken, or a broken lock. It is crucial to address this issue as soon as possible. A draught will cause you to spend more on heating. Check the seals around the window frame by feeling the cold air.

There will also be water beads on the inside of windows when your window seals aren’t performing as they should. This is a good indicator that you should seal your double-glazed windows.

Your window frames are designed to move slightly in order to keep the glass sheets in place. Over time, this special packaging material may be compressed. This could cause the seal to be broken. This allows air to flow between the panes and reduce the energy efficiency of your window.

Double glazing that has blown seals is a sign of failure and should be repaired immediately. A blown seal will stop your double glazing from fulfilling its primary purpose, which is to keep the cold out and warm air in. Furthermore, a blow-off seal can let moisture in, which could cause mold and other unpleasant conditions. Call a double glazing specialist as soon you notice a blowing window seal. They can replace the entire unit.

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