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The Double Glazing Windows Repairs Case Study You'll Never Forget
Double Glazed Windows Repairs

As time passes, your double glazed windows will begin to exhibit signs that they require repair. These might include a draught entering the window, misting and condensation between the windows and broken glass.

These issues can be solved without having to replace your entire window unit. You can also save money on energy bills.

Broken Panes

A lawnmower's pebble or a baseball that your children throw at you or even an accident at work can lead to a crack in the glass of your double-glazed window. As opposed to single-pane windows glazing features an airtight seal that keeps insulated gas between two glass panes. So, if a damaged pane of glass leaves your home with an empty space in the frame, it is imperative to replace it.

In just a few steps, you can install an entirely new window pane. First the old glass as well as the wood around it should be removed from the frame. The new pane is positioned in the opening of the frame and pressed into place with silicone caulk.

The gap in the frame is then filled with window putty, which is spread using a putty blade and smoothed with a second putty knife. Window putty can also serve as an adhesive, helping to hold the new pane in place. If your double-glazed window frames have wood moldings, you might require a chisel to take any excess paint and varnish from the grooves where the moldings fit.

Before installing a new window, ensure that you have a pair or gloves that are heavy to avoid cutting yourself when working with glass. Then, using a utility blade, scrape off any remaining window glazing and take measurements of the opening of the new windowpane. For wooden frames you should subtract 1/16 inch from each measurement to allow for the expansion and contraction of wood. Metal frames should be treated in the same way, to ensure that the replacement glass fits snugly.

In the course of repairing a double-glazed window it is also possible that seals between the glass panes could be damaged. This could cause condensation or mist in the gap. A technician can solve this issue by drilling small holes in the frame to remove any moisture. The technician can then pipe hot air into the gap to dry it out and reseal.

It is best to leave the job of repairing double-glazed windows to professionals. Special tools are needed to remove and replace the new glass, therefore the job should only be handled by a certified expert to avoid potential injuries.

Foggy Windows

The window seal (also called the gasket on the window) is responsible to seal air between the two panes of glass in your double glazing and prevents drafts, noise and moisture. Over time the window seal will shrink or even disappear. This happens because of natural expansion and contraction as the window goes through different temperatures and weather conditions throughout the year.

Foggy windows indicate that the air-tight seal between the two panes of your window are failing. This will allow moisture from the outside to enter and condense within the glass panes, creating a frosted, wet appearance that is hard to clean.

There are a few options to fix this issue without having to remove the double-glazing. One option is to 'defog the window by drilling tiny holes and injecting a cleansing solution between the glass panes. But, this is an immediate fix since the solution will only eliminate the fog, it does not replace the inert gas between the glass and does not restore the energy efficiency that could be lost due to the deterioration of seals.

You can also replace your insulated glare unit (IGU). This will provide you with clean, fresh windows, free of fog, and will restore any energy efficiency. This option is more expensive than fixing the IGU, but it's a more permanent one.

It is possible that the frame of your window or door may be rotting. This will need replacement. This is a major repair job and can be very costly and replacing the damaged frames will give you a fresh start and stop further moisture from entering your home. It is recommended to hire an expert to evaluate the damage to your window prior to you begin any repairs. They will be able to offer you a price and give you advice about your options. They can help you choose the right double-glazing option that will fit perfectly. They will install your windows correctly and use high-quality materials.

Condensation Between the Panes

Condensation occurs when warm air comes in contact with an icy surface. This causes the water vapour in the air to condense and form droplets of liquid. Condensation that forms on a double-glazed glass window can be easily wiped away. However, moisture that collects between the panes may cause mould to grow or even damage the glass.

Moisture that develops between the windows in your home can be caused by a number of issues, such as temperature fluctuations, high humidity levels and broken seals. Older windows are more vulnerable to this issue than newer ones with better sealing technology.

It is important to remember that although the development of condensation on the glass of your window shouldn't be overlooked, it is easily fixed without having to replace the entire unit. This issue is often caused by a leak in the outer or inner frames of the window.

A professional can look over your window and determine if seals require repair or replaced. If the seals are replaced, this will help to restore your windows' capacity to insulate cold and heat, resulting in lower energy costs.

To fix this issue, a professional can drill holes into the windows' outer and inner to eliminate the moisture that has built up inside. It can take from just a few minutes to several days to remove all moisture. After this is completed the window can then be sealed and fitted with vents that let the windows naturally release air and moisture.

It is important to ensure that your windows are maintained and sealed to prevent this issue. This can be achieved by hiring a professional to conduct regular maintenance on your double glazing. This will ensure that any problems are caught early and rectified before they become more serious, assisting to extend the lifespan of your double-glazed windows as well as reducing the necessity for replacements.

Damaged Frames

Sometimes, the frames of double glazing may develop issues that require fixing. This will require the expertise of a professional. Most of these types are much cheaper than having to replace windows. They are also more energy efficient.

Condensation is caused when water gets into the frame of double-glazed units. This is caused when the seal made of rubber that keeps the insulating gap free of water deteriorates and minute holes appear. This could be because of a variety of reasons, most commonly the seals wearing down or a small amount of moisture accumulating between the panes.

The first thing to do if you notice this problem is to contact the company you bought your double glazing from. They will then examine the issue and, if the problem is covered under warranty, they will arrange to replace the unit for you.


The process could take a long time, based on the amount of activity at the firm. Therefore, it is recommended to research and find out as as much information about the business and the installers you can before you sign a contract with them. This will help you avoid problems later and ensure that your repairs are completed correctly.

A specialist can replace gasket seals that have shrunk and broken to stop moisture and condensation developing between the panes of glass. This is a cheaper alternative to installing double glazing windows, which could cost thousands of pounds. It's also more sustainable and can help you reduce your energy bills.

In some instances, the frame of the window may require replacement completely. This could be due to damage, or because the windows have become outdated and are no longer energy efficient. If the window is not able to be repaired, it's recommended to replace it with a unit of a similar design. This will increase the energy efficiency of your home and avoid future issues with condensation and leaks.

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