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Double Glazed Windows Repairs

There are a variety of reasons your double-glazed windows may require repairs including condensation between panes to drop or sagged frames. Fortunately, the majority of problems can be addressed.

If your window or door is difficult to open, consider oiling the hinges, the mechanism and handles. This is a quick, affordable fix.

Broken Panes

When a window is broken, it loses its insulation and could cause draft. If the dividing muntins are broken it can cause water to leak through the glass panes resulting in condensation, mould and mildew and making your home less energy efficient. It is recommended to have a professional repair the damaged window in order to get the best seal and energy efficiency.

First, you'll need to remove the broken glass. Start by placing an inexpensive glass cutter from an appliance store beneath the broken pane. It's worth lubricating this tool's cutter with a light oil before you begin. This will prevent the glass from breaking too easily. The ball-shaped tip of the tool can be used to loosen the pieces. They should come off quite quickly.

Once the glass is removed, scrape away any old glazing compound from the recess area of the frame. This will expose the glazier's point and the metal clips that hold the pane in the frame. Replace them if you notice any corrosion. If the window is constructed of wood, the glazier points can be reused if they are still intact.

The surface of the remaining frame needs to be prepared to allow the re-glazing. Apply a continuous strip of compound to the recess with the caulking tool. Make use of a premium putty, such as glazier’s compound in cartridge. Let it dry before installing the glass. Reinstall the metal clips if they are attached to the frame. Reinstall the divider muntins.

Condensation

Condensation can cause problems for double-glazed windows, particularly during winter. It's usually caused by too much moisture in the house where warm air collides with cold glass, which then forms into water droplets and settles in the corners of your windows or across the frame. You can stop this from happening by opening your windows more often, improving ventilation with extractor fans, and running dehumidifiers. If condensation remains a problem, it's important to get an expert to determine the root of the issue. You can then fix or replace your windows when needed.

It's also important to remember that condensation on a double-glazed window could be a sign of a leaky seal. The seals that are applied at the factory can wear out over time and allow cool air to pass between the panes. This can lead to fogging of the window, and eventually mold growth if not addressed quickly enough.

A hairdryer can be used as a quick solution to eliminate excess moisture. However, this is only an interim solution and should only be only used as a last option. If you allow the condensation to sit for too long, it could cause dampness or mould within your home. This issue should be handled by a professional.

Professionals can reseal double-glazed windows to provide a longer-lasting solution. They'll remove the affected pane of glass, then clean the gaps and pipe in hot air to evaporate any moisture that remains. During the process, they will also check for any damage, mildew or mould growth, and perform an draught-proofing procedure to ensure that your windows are fully functional and energy efficient.

Draughts

Rubber seals may wear down in time and create a draft between your two panes. This is typically a simple issue that can be resolved by re-installing the gaskets and this will result in a solid and airtight seal. This will keep warm air inside your home, and colder air outside. You will reduce your energy bill.

Misted double glazing indicates that the seals inside your sealed unit (sometimes called a DGU) have been blown. The unit consists of 2 panes of glass separated by an insulating bar that creates an insulating gap and then filled with gas, like argon for example, to make the window airtight. If the seal has blown water vapour can enter your home through the gap. This can cause condensation between the glass panes, which cannot be removed.

This is a simple problem to fix, and windows can be swiftly repaired by professionals using the right tools. The expert will employ an instrument designed to push in the new seals. This is typically faster than doing it manually. The tools have a pointed tip that can be used to push the seals into corners.

In some cases professionals could be able to "reseal' your windows by drilling a small hole into the window and then adding a special desiccant material or putty. This is less expensive than replacing your double-glazed windows and still provides you with a reliable air-tight system for draughtproofing.

Faulty Hinges

Misted double glazing is a typical problem that many people experience. It could be caused by a broken seal, or a crack in the glass or an issue with the frame or mechanism. It is usually possible to correct this issue. This typically involves creating a seal between the two glass panes. The new seal will prevent condensation, draughts and leaks.

As soon as you notice any issues, you should contact the company that sold you the windows. It is important to notify the company in writing and request confirmation that they received your notification. If there is a dispute, having everything in writing will aid in proving your complaint.

A window repair specialist may drill the gap between your windows to remove moisture and make an airtight seal. However, this is typically only a temporary fix and will not prevent the return of moisture. It might also be possible to replace only the glass, which would make it watertight.

Be aware that you should only attempt DIY fixes with the knowledge and skills you have are sufficient. Using super glue or another kind of DIY solution can cause more damage in the long run. If you are unsure of what to do, it is always better to seek professional advice. You can locate an expert in your area who can provide double glazing repairs by typing your postcode in the search box on Checkatrade. All of our tradespeople are thoroughly vetted and checked and you can trust them to provide a high-quality service.

Broken Seals

Window seals, or insulation gas fills, keep double glazed windows in place. They are susceptible to damage due to a variety of factors, including weather conditions, age, and power washing. It is important to know the symptoms and how to fix them.

If a window seal is damaged it allows moisture to enter between the two glass panes, causing fog. This is a common problem that can make the window appear distorted. If the seal fails, the inert gases argon and others are removed from the window, reducing the glass's insulating qualities.

A damaged window seal can be fixed by replacing it with the new one by an experienced glazier. This is costly and might not be able to resolve the fog issue. Certain companies offer defogging solutions that involve putting an air pump inside the window frame to remove the moisture and leave the glass clear. This method isn't 100% reliable and does not replace the inert gasses, which means that the fog can come back.