Notes

Why We Why We Repair Double Glazing (And You Should Too!)
Why You Should Hire a Glazier to Repair Double Glazing Seals

When window seals break they can result in increased energy bills and windows that are foggy. Hiring a professional to repair the broken seals will prevent the problem from becoming worse.

The window seals are vital to the insulation provided by double glazing. They're also easy to fix and could save you money in the long run.

Remove the Old Seal

The seals could break for numerous reasons. They may be damaged due to improper installation, or they could become broken as time passes due to normal wear and tear. While it's impossible to prevent a window seal from breaking, taking a few steps can ensure that the issue is less likely to occur. For example, avoiding using power washing on your windows can help to reduce the risk of damage resulting from high levels of pressure in the water. Verify that the manufacturer of the windows does not advise using reflective window films since they can cause damage to the seal.

In the case of double glazed windows, the most frequent sign that the seal has broken is the appearance of condensation between the two glass panes. This is caused when the insulating inert gas like argon or krypton that was vacuum sealed between the two glass panes of the window has escaped. Once this occurs the window will no longer be able to keep the cold and moist air out of your home.

Fortunately, repairing a faulty window seal is a simple. A new wedge gasket seal can be bought at any hardware store. My Source is likely to be simple to install in your uPVC window. If you're worried that you might not be able to install the new seal correctly you can spray water on the outside of the window frame to help to lubricate the process.

Before you install the new seal, it's important to check that there aren't any obstructions in the grooves of your window frame. This could include melted pieces of uPVC that are often left behind from previous repair attempts. You can remove these areas with the chisel prior to beginning to ensure that the new rubber seal will fit perfectly within your window frame.

It is possible to fix a broken uPVC seal yourself however it's better to leave the job to professionals. A professional glazier is equipped with the tools and experience to complete the task swiftly and with minimum risk to your uPVC window.

Clean the Surface

Double glazing windows can help reduce noise pollution when they are installed and maintained correctly. However window seals that is damaged can let in air and moisture which can cause numerous issues like condensation. The condensation inside a glass pane can be ugly however it can also cause mold to grow and can damage the frame. Repairs by a professional are required. Other indicators of a faulty sealing include a draft that can be uncomfortable and expensive to heat or glass distortion that can affect the light transmission and impact on the view.

The good thing is that double glazed windows are fairly simple to fix, especially if the issue is caught early. While it is possible to complete the job yourself, a professional is generally recommended since they are knowledgeable and have access to top-quality materials that can give long-lasting results.

To begin, you will have to take off any silicone sealant that is already present. This can be done using a sharp knife. After that, the window should be thoroughly cleaned to get rid of any dirt and debris that might have accumulated. After the surface has been cleaned, the next step is to re-seal the window.

Before sealing again, remove the bottom pane and flip it upside down so that the face of the glass that was originally on the inside of the sealed unit is facing upwards. The surface must be thoroughly cleaned using dry, clean cloth.

drilling holes in a double-glazed glass window is not an ideal option. However, to save money and avoid the need for an emergency call-out to the emergency services, you can drill a small hole to insert an desiccate bag that will absorb any moisture between the two glass panes. The hole can be cleaned with rubbing alcohol (isopropyl) to stop the build-up of mould.

Double-glazed windows are built to last, however they can break down. Many people require repairs to double glazing. The most common indications that the window seals are failing is condensation, drafts and a distorted look between the glass panes.

Apply a New Seal

Window seals are crucial to ensure a secure and energy-efficient glass-to frame connection, no matter if you've just moved into your home or recently installed double-glazed windows. As time passes the seals may break down due to age and external factors like weather. If the seals have been damaged, you must make sure that you replace them as soon as you can. This will stop water from getting in between the panes of glass, which can lead to condensation, a reduction in energy efficiency, or even water damage to your property.

It is best to pick a day when there is little rain to accomplish this task. You'll be working with the window open, and you don't require lots of rainwater to seep into your home. This could harm the new seals. Additionally, if you need to use power tools to remove the old window seals be sure to wear protective eyewear as it's easy to collect dust or other debris into your eyes.

After you've removed your old seal, it's important to clean the surface before applying a new seal. With a knife, or a putty knife, remove all residuals from the area and then apply a fresh layer of silicone caulking to seal the gap. Apply a globule of caulking to the outside of the frame as well. This will help to create an airtight seal as well as a waterproof seal around the glass.

Paint the exterior of the frames of your windows to shield them against the elements. This is a good way to ensure the integrity of your window, especially in hot weather.

While you can reseal your own windows, if the problem is serious, it's recommended you contact an expert window company to complete the work on your behalf. You can be certain that the new seals are properly installed, ensuring that your windows are energy efficient and secure.

Allow the Seal to Cure

A double glazed window is a great option for homeowners since it protects against the weather, keeps the heat produced by your heating system inside and blocks sunlight from entering. However, it can only accomplish this if the window has been sealed correctly. A failed seal can cause condensation and mist to form between glass panes. It could cause energy loss, draughts and even security concerns. It is therefore important to address a damaged seal as soon as you can to prevent damage to the window and your home.

You can test the seal of your window by squeezing for draughts, or cold around the frame's corners. If you can feel this the gasket of your window has become flat and is not creating an airtight seal. Another method to determine this is to look for signs of misting and condensation between the glass panes of your double-glazed windows. Both of these issues are caused by a breach in the seal of the double glazed window which allows moisture into the window and weakens its insulation properties.

There are kits to reseal the double glazing seals available if you are a DIY enthusiast. These kits usually require drilling a small hole into the window and cleaning it with a magnet. They then put in drying pellets that eventually disappear, and fill the hole with clear concrete. However, while these kits do have a good track record of providing quick results, they do tend to need doing more often than professionally-installed windows and they don't always provide a lasting solution.


It is important to allow the sealant to completely dry before you use it, whether you repaired your window seals by yourself or hired an expert. It could take between a few days to a few weeks for the sealant to fully cure, so it's best to wait until it is to open the window once again. It is essential to clean a window that has just been sealed with attention. To protect it from staining or scratches you can put an old towel on the surface to work on.

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