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10 Double Glazed Windows Repairs Tricks Experts Recommend
Double Glazed Windows Repairs

There are many reasons why your double-glazed windows could need repairs, from condensation between panes, to drop or sagged frames. The majority of these issues can be solved.

If your door or window is difficult to open try oiling the hinges, the mechanism and handles. This is a simple, cheap fix.

Broken Panes

When a window pane is broken, it loses its insulation and may cause drafts. If the muntins that separate the glass panes are damaged, moisture could get in between them and cause condensation, mould or mildew. This will make your home less energy efficient. It is best to have a professional repair the damaged window in order to get the best seal and energy efficiency.

Firstly, you'll need to take the broken glass off. Start by placing an inexpensive glass cutter in an hardware store underneath the broken pane. Before you begin, grease the cutter with a light oil. This will stop the glass from breaking too easily. Then, you can make use of the tool's ball-shaped tip to break up the glass fragments and they should fall off fairly quickly.

Scrape any old glazing compound out of the recess of the frame once the glass has been removed. This will reveal the glazier's points and metal clips that hold the pane in place. Replace them if there's any corrosion. If the window is made of wood the glazier's gilder's points can be re-used if they're still intact.

The remaining frame needs to be prepared to allow re-glazing. Using a caulking gun, apply a continuous ribbon of compound around the inner edge of the recess. Make use of a premium putty, such as glazier’s compound in cartridge. It should dry before reinstalling the glass. Reinstall the metal clips, if they are attached to the frame. Reinstall the divider muntins.

Condensation

Condensation is a common problem that double-glazed windows may experience, especially in the winter months. It's usually caused by too much moisture in the house, with warm air meeting cold glass, which then turns into water droplets, and then collects in the corners of your windows or across the frame. It can be prevented by opening your windows more often and enhancing ventilation with extractor fans and running dehumidifiers to lower the moisture levels. If condensation remains an issue, it's best to call in a professional to get to the bottom of the issue. You can then fix or replace your windows when needed.

Condensation on a double-glazed window is a sign that the seal has failed. This is due to the vacuum seal that was applied by the manufacturer can be damaged in time, allowing cool air to make its way between the panes. This could lead to fogging of the window, and eventually mold growth if not addressed promptly enough.

For a quick fix to condensation, you could try using hair dryers to dry the excess moisture. However, this is only a short-term solution and should only be used only as a last option. If the condensation has left for too long you may be experiencing mould or dampness in your home, which should be dealt with by a professional.

As a longer-term solution, you can have your double-glazed windows repaired by experts. They'll take off the affected pane of glass, clear the gaps and pipe in hot air to evaporate any moisture that remains. During the process, they will also check for any damages or growth of mildew, mould or mildew and apply an draught-proofing procedure to ensure that your windows are fully functional and energy-efficient once again.

Draughts

The rubber seals wear down over time and create drafts between your two panes. This is often a simple problem that can be solved by replacing the gaskets, and this will create a strong and airtight seal once again. This will allow warm air inside your home and the colder air outside, saving you cash on your energy bills.

Double glazing that has mist could be a sign of blow-blown seals. The unit is comprised of two panes of glass separated by a spacer bar to create an insulating gap and then filled with gas, such as argon for example, to make the window airtight. If the seal has been blown water vapour can enter your home through the gap. This can result in condensation between the glass panes which is not able to be removed.

This is a straightforward issue to repair and windows can be swiftly replaced by specialists with the right tools. The professional will employ tools designed to push the new seals into place and this is normally quicker than doing it by hand. The tools also come with a pointed end which can be useful for pushing seals into the corners.

In certain cases professionals may be able to 'reseal your windows' by drilling a small hole in the window and adding the desiccant material, or putty. This is a less expensive option than replacing your double-glazed windows and will still provide you with a draught proofing system.

Faulty Hinges

Many people have had misted double glazing. It could be caused by a cracked or broken glass or frame or even a broken seal. The good news is that this can be easily fixed. It is usually a matter of creating a seal between two glass panes. The new seal will stop condensation, draughts and leaks.

If you discover any issues, you must contact the company that sold you the windows. You should inform the company in writing and demand confirmation that they have received your notice. Making sure that everything is in writing will help later on should any disputes arise, as it is easier to prove that you did complain.

In certain situations, a window repair specialist will cut the hole in your windows to draw out moisture and make the new seal. This is a temporary fix that won't stop the return of moisture. Alternatively, it may be possible to replace the glass unit itself, which will ensure it is watertight.

Be aware that you should only attempt DIY fixes with the knowledge and skills you have are sufficient. Super glue or other DIY solutions can result in more permanent damage. If you aren't sure what to do, it's always better to seek professional advice. You can find an expert local to you who can offer double glazing repairs by typing your postcode into the search box on Checkatrade. All of our traders are fully checked and vetted which means you can rely on that they will provide you with a top quality service.

Broken Seals

Double-glazed windows are secured by seals on windows or gas. They can be damaged by various elements, including weather conditions, age, and power washing. It is important to recognize the signs and how to fix them.


When a window seal breaks, it allows humid air to get into the two glass panes, creating fog. This is a common problem that can cause the window appear disfigured. Once the seal fails, the inert gases argon and others are lost from the window, decreasing the glass's insulation properties.

A damaged window seal can be repaired by replacing it with a an entirely new one by a professional glazier. However, this could be expensive and may not solve the fog issue completely. Certain companies offer defogging, which involves putting an air-pump inside the window frame in order to remove moisture and clear the glass. However this method isn't 100% reliable and cannot replace any inert gas, and the fog can come back.

If the IGU (insulated unit) is beyond repair, a glazier could replace it. This is the most cost-effective option and is a good choice if you are looking for a long-term solution. However, it's best to select a company with a guarantee for replacement windows to ensure that any problems are protected. This means you can be sure that you'll get maximum value for your investment. Alternately, you can try to avoid this issue by choosing a high-quality window and following the manufacturer's maintenance instructions. This will extend the life of your window and decrease the need for repairs.

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