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How to Repair Double Glazed Windows

Many homes with double glazing are plagued by problems like condensation, a decrease in insulation quality and windows that are difficult to open. These issues are usually the result of a fault with the hinges, mechanisms or handles.

It is possible to repair these windows by following a few simple steps.

Cracked Panes

If a double-pane windows is damaged, it's an urgent issue that needs to be addressed immediately. Double- and triple-pane windows are insulated using gases that keep warm air in the winter and cold air out. Therefore, when one of the panes cracks, that gas escapes and your home becomes less insulated. Cracks can get worse over time. Repairing them now can prevent a more serious problem in the near future.

If a crack develops the most important thing is to identify what caused it. It's possible that an impact or structural issue caused the crack. In this instance it is crucial to inspect your other windows for damage in order to determine the next steps.

It's also recommended to check the surrounding area of your home for any other issues which could be contributing to the crack. If your windows are situated near other doors or walls the stress caused by temperatures can cause cracking.

There are many ways to repair a crack depending on the cause. For instance, if the crack was caused by an impact, you might be able to work with replacing just the broken glass. You may need to replace the entire window frame. This is a more involved solution, and it requires the help of an expert.

If you have a crack in the glass that didn't cause the frame to move then it is usually easy to apply adhesive between the broken panes. This will repair the crack and protects your window from future problems and is definitely worth trying in this instance.

Another option that's simple is to cover the crack with clear tape. It's not the most attractive solution, but it will stop bugs and drafts from getting into your home. Glass repair film is an upgrade that can be put in place quickly and offers a more solid degree of protection. It's available from a variety of double glazing companies and is well worth the investment to secure your windows.

Condensation Build-Up

Double glazing windows that need to be repaired are usually due to condensation between the panes. It's usually a sign that a seal between two windows failed, allowing water to get in. This moisture can cause condensation and other problems that may require the replacement of the window.

Double glazing is more effective in reducing condensation than single pane windows as it features an air space between the glass that is either filled with air or a non-toxic gas. The space between the glass and the window frame is separated by a spacer, which acts as insulator. This prevents loss of heat. In many cases the spacer bar has silica gel that is effective in preventing moisture from getting between the glass panes.

It is therefore important to clean and regularly clean your windows. upvc repairs will reduce the amount of moisture that accumulates and let it evaporate. Extraction fans and opening windows can help eliminate excess moisture.

Another way to stop condensation is to install a dehumidifier in your home. They are available for between PS60 and PS150. They are a great investment that will not only stop mold growth, but also reduces condensation.

Condensation between the glass panes of your double glazing could occur because the outer air is colder than the inside window pane, which causes the surface to cool and create condensation. It can occur when you alter the temperature of your home, for example by turning on or off the heating.

Condensation is also an indication of poor double glazing as older units were made with rubber strips, not the latest silicone type. They are susceptible to deterioration with time. It may be possible to repair your seals, however this is only a temporary solution, as the window will eventually fail in another location.

Stained Glass

It is possible to repair a double-glazed window handle locking mechanism, rather than replacing the entire glass pane. This is not a simple DIY task, as you will need special tools to ensure that the repair is completed properly.





The most common complaint from owners of double glazing is that their doors or windows have become difficult to open and close. This can be caused by some slight warping of the frame or hinges, however it could also be due to issues with the seal. In certain cases, the issue could be more serious and it is worth speaking to a professional regarding the possibilities available.

Another common complaint is the forming of condensation between glass panes. This could indicate that the seal is failing and not able to hold in the insulating gas between the panes. This is an easy fix. The gas that is insulating can be repaired by using a special glue to seal the gap.

Start by placing the broken window on a flat work surface. Peel off the black sealant with care to reveal the silver spacer bars. Cut into these with a sharp knife, staying just below the bottom of both the glass and the silver spacer bars. Cut until you are able to separate the two pieces and when you've completed this place the top pane of glass on your work surface (it is recommended to wear gloves here). Clean the glazed side that faces the frame as well as the spacer frame. Be sure to clean away any smears or marks, as they could affect the seal of the window when it is reassembled. Finally, place the new spacer bar onto the glass pane and spread some adhesive on its edges to aid in bonding it with the glass and the silver spacer frame. Allow the adhesive to dry before assembling. It is recommended to have two people assist you as it can be difficult to get everything aligned.

Gasket Seals

While double glazing is highly durable and designed to last for years to be, there are problems that may arise at times. From draughts to issues with closing or opening it is crucial to fix any issues quickly to avoid them becoming worse.

One of the most common problems reported by double glazed owners is the formation of condensation between the two glass panes. This is due to the failure of the desiccant which absorbs moisture from the air in the insulated gap. When the desiccant is damaged, condensation can develop in minutes and form a dark line across the windows.

Another issue that may arise is when the gasket seal fails to keep water and other contaminants out of the gap. This can cause leaks around the edges of the frame, and could also cause damage to the surface of the double-glazed unit itself. Contact your installer immediately if you notice any signs that your double-glazed units are leaking.

Many companies offer a warranty for their products. These warranties usually include a period of guarantee of 10 or even 20 years. Some companies even provide lifetime guarantees. It is essential to review the details of your guarantee to find out what it covers and until when it expires.

It may be worth trying to solve any hardware problems yourself prior to contact your double glazing company to request repairs. For example, you can try cooling the mechanism or oiling it to see if this fixes the issue. You can also try cleaning the handle or window handle before reinstalling it.

It is also important to find out if your local council has insulation grants to assist in the replacement or repair of double-glazed windows. There are many ways to apply, and some areas might require the proof of eligibility or a particular form of application. It is worth checking with your local authority to determine what they need to know.