A How-To Guide For Blown Double Glazing Repair From Beginning To End

· 6 min read
A How-To Guide For Blown Double Glazing Repair From Beginning To End

Is It Time For A Blown Double Glazing Repair?

Condensation is a sign of blown double glazing. This occurs when the seal between two panes has broken which allows gases that are inert to escape.

Repairing your double-glazed windows is essential. It will not only save you money and reduce noise from outside, but it will also improve the insulation qualities of the window.

Damaged Seals

The window seals on double-glazed units are responsible for creating an airtight and watertight barrier that keeps cold and heat out. The seals can become damaged and cause misty windows, drafts, and energy loss. If you find that your seals are beginning begin to show signs of wear it's time to replace or repair them.

One of the first symptoms you'll notice is condensation forming between the glass panes. This happens when the inert gasses within the sealed unit break down and allow warm air to enter your home. The inert gas is not replaced after this happens.

A black mouldy appearance on your window frames or windows is a different sign. This is typically an indication that the seals have broken and water is getting into the frame. This can lead to softening of the timber, warping and peeling paint. When the window is replaced any moisture within the frame will be eliminated. Then you can regain your original energy efficiency.

If you do decide to have your windows repaired or replaced you should also think about upgrading your double-glazing to an A-rated energy efficient glass as this will increase the efficiency of your heating system and lower your energy bills. You can find out the energy efficiency of your existing windows by contacting the company you purchased them from or searching on the internet.

A window that is drafty could be a sign that the seals on your windows are damaged or have blown. If the window is still keeping the cold out, it's worthwhile to replace the seals as soon as you can. This will improve the performance of your windows.

You can test your window seals by rubbing the edge of your glass with ice. If your window gets smudgey and you can't remove it, then the seals are most likely to be broken. This is a problem that has to be dealt with immediately since it can lead to a reduction in the insulation of double glazing as well as higher energy bills.

Water Leaks

Double glazing is an excellent investment, adding warmth to your home while reducing noise and enhancing energy efficiency, which will save you money over the long haul. However, it's not a surprise that many homeowners face problems with their windows from time to time. One of the most common issues that could cause a double glazing replacement is condensation in between the panes. This can cause a dirty appearance or worse it can allow water to enter your home.

Condensation that occurs between the panes of your window is caused by water vapour colliding with cold glass and forming moisture that can't be wiped off. This is an occurrence that happens when the temperature drops at night or the windows are exposed to rainy weather. The best approach to combat this issue is to make sure that your home is equipped with adequate ventilation and a dehumidifier in any rooms that are prone to moisture build-up.

If you are unable to remove the water from your double-glazed windows, it is most likely that the unit has blown. This is the only way water can be able to enter a sealed unit after the gas has evaporated. There are companies who claim to be able to repair existing misted double glazed units by drilling holes into the glass and injecting chemicals into them that absorb moisture from the inside of the unit. This could help clear the fog and condensation in a short amount of time, but it's a temporary solution and will require repeated.

When a sealed unit has been blown, it will be irreparable and your double glazing will require replacement as it will no longer possess the thermally insulating properties that it had when it was brand new. It is worth checking if your double glazing is still within warranty with the company that installed it. In this case they should re-instate the warranty or offer a reduction in cost to replace the unit.

There is another option for those who have misted double-glazed windows, and that is a simple repair kit that can be purchased from a variety of online stores. This will involve drilling small holes into the glass, and then spraying a special resin which fills in the gaps and prevents the water from getting through the panes of your window. This is a longer-lasting and cost-effective option, however it must be done by a professional with the necessary experience.

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If your double glazing seals aren't working properly, moisture can enter between the panes of the windows and cause them to mist. This can cause the windows to lose their effectiveness, as they will no longer keep the heat inside and the cold out.

In certain circumstances misting could cause the formation of water inside your double-glazing. This could cause damage to the frame, and if not addressed, it could result in water leaks and even the growth of mould in your home.

If your windows are covered by warranty, you should consider asking your installer for help with the cost of repair or replacement. If they aren't the case, you'll need to contact a specialist to complete the repair work.

A professional can repair your damaged double glazed windows and restore their thermal efficiency as well as removing the condensation buildup. It's important to get the windows fixed when you notice the misting, since it will lower your energy bills and prevent moisture entering your walls or into your plaster, which could cause serious damage.


A blown double-glazed window repair will not only restore the performance of the double glazing but also ensure the safety of your family. Windows that have been blown often have large gaps between the glass, which aren't ideal for children and animals to play with. Professionals can equalize pressure by drilling two tiny hole and then use silicone sealant to reseal your windows.

It's a good idea check your double glazed windows if they are under warranty, and if you are unable to find contact details, then it's worth asking your supplier to provide the information as you may be in a position to claim back a part of the costs for installation. Some companies also offer a lifetime guarantee on their products so it's worth checking to determine if your windows are covered by this. It is recommended to contact your provider whenever you discover any issues with your double glazed windows, either in person or over the phone and follow this up in writing, if you are able to.

Poor Insulation

Double glazing is an investment that can add warmth to your home and block out outside noise. They also provide insulation and energy efficiency upgrade for any home. As with any home improvement there are always problems. One of these is when your double glazed windows start to mist. Windows that have mist are ugly and can ruin your clean aesthetics. They can also be an health hazard due to the buildup of moisture. Thankfully, this is easily fixed with the help of professional blow-blown double glazing repair.

If your double glazing has begun to show signs of condensation buildup it is likely that the gas space between the glass panes has opened up to the leak. This means that the inert gases have evaporated, allowing warm air to get into your home. This is a serious issue that requires fixing, since the double glazing can not be able to perform its purpose and your home will be colder as a consequence.

Misting on the outside of your window is an natural phenomenon that occurs mainly at night and in the early hours of the morning when the temperature drops and dew forms. This is not a reason to be concerned about and is simply a result of the windows functioning as they ought to.

The moisture on the inside of double-glazed windows is an additional matter. This is often due to inadequate ventilation and the humidity levels in your home. Make use of extractor fans to lower humidity in the kitchen and bathroom. Also open your windows often to allow fresh air circulation.

The majority of the time, a blown double glazing repair is simply replacing the damaged pane. A qualified tradesman will first examine the condition of your frame, and ensure that the correct measurements are taken to ensure that when a new window arrives it can be cut to fit properly. They will then take away your old window and replace it with the new one and ensure that any seals are fitted correctly to prevent any moisture from entering your home.