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"The Repair Double Glazing Awards: The Most, Worst, And The Most Unlikely Things We've Seen
Why You Should Hire a Glazier to Repair Double Glazing Seals

If window seals fail, they could result in more expensive energy bills and foggy glass. If you don't address the issue, it will only make it worse, so hiring an expert glazier to fix the broken seals is a smart move.

Window seals play a crucial part in the insulation benefits double glazing can provide. It's a good thing that they're simple to fix and could save you money in the long term.

Take off the Old Seal

The seals can break for many reasons. They may be damaged due to improper installation or become broken due to normal wear and wear and tear. Although it is impossible to stop windows from breaking but you can take a few steps to lessen the possibility of this happening. Avoiding cleaning your windows with power for instance, will reduce the risk of damage from high pressure water. Also, make moved here that the window manufacturer does not recommend the use of reflective window films on their windows since these can damage the window seal.

In the case of double glazed windows, the most common indication that a seal has been broken is the appearance of condensation between the two panes of glass. This happens because the insulating inert gas like argon or krypton that was vacuum sealed between the two glass panes of the window has escaped. After this happens, the window is not able to keep moisture and cold air from entering the home.

The good news is that fixing a damaged window seal is a simple. A new wedge gasket seal is available at any hardware store. It should be easy to install on your uPVC window. If you are worried that you won't be able install the new seal correctly you can spray water on the exterior of the window frame to help lubricate the process.

It is essential to examine the grooves of your window frame prior to installing the new seal. This could include melting pieces of uPVC that are left behind from previous repair attempts. You can remove these areas using a chisel before starting to ensure that the new seal will be a good fit in the window frame.

It is possible to repair the broken uPVC seal yourself however, it is best to leave the job to experts. A professional glazier has the tools and skills to complete the task swiftly and with minimal risk to your uPVC window.

Clean the Surface

If double glazing windows are properly installed and maintained, they provide excellent insulation and can cut down on noise pollution. However windows with seals that is broken can let in air and moisture that can lead to various issues, such as condensation. Moisture inside a glass pane can be ugly but it also causes mould to grow and damage the frame. Repairs by a professional are required. Other signs of a failed sealing include a draft that may be uncomfortable and costly to heat or glass distortion which can affect the light transmission and impact on the view.

The good news is that double glazing windows are fairly simple to fix, especially if the issue is caught early. While it is possible to perform this work yourself, a professional will be advised because they are knowledgeable and have access to materials that can give long-lasting results.

To get the job underway it is important to eliminate any existing silicone sealant, which can be done by carefully scraping off the old material using a sharp blade. After removing any old sealant, the surface must be thoroughly cleaned. After the surface has been cleaned the next step is to seal the window.

Before sealing, remove the bottom pane and flip it upside down so that the face of the glass that was on the inside of the sealed unit is facing upwards. Make sure to thoroughly clean the surface using a dry cloth and dry it to ensure that no water marks remain.

Drilling holes into windows that are double-glazed is usually not a good idea but when it comes to saving money and avoiding the need for a professional call out, a small hole in the seal can be used to tuck in an insulating packet that will absorb any moisture that may have accumulated between the two glass panes. The hole can be cleaned by ruby alcohol to stop mould from growing.

Double-glazed windows are designed to last, but they do sometimes break down. Many people need a double glazing repair. The most frequent indications that the window seals have failed are drafts, condensation and a discolored look between the glass panes.

Apply a New Seal

If you've recently moved into your new home or just got your double-glazed windows window seals play an important role in ensuring an airtight and energy efficient glass-to-frame connection. Over time, seals could be damaged by weather conditions and other external factors. It is crucial to replace damaged seals as fast as possible. This will prevent moisture from leaking between the glass panes, which can cause condensation, energy loss and even damage to your home.

It is best to pick the day that has a lower chance of rain when you're working. It's going to be a time when you have the window open, and you don't need lots of rainwater to seep into your home. This could damage the new seals. Additionally, if you need to use power tools to remove the old window seals, be sure to wear eye protection since it's easy to collect dust or other debris in your eyes.

After you've removed the old seal, it's important to clean the surface prior to applying a new seal. With a knife, or a putty knife, clear 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 create an airtight seal and waterproof seal around the glass.


Paint the exterior of the frames of your windows to shield them against the elements. Particularly in hot weather, it's common for the seals to get cracks, or damp spots and this is a great way to help maintain the quality of your window.

You can reseal the windows yourself, however in the event of a major issue, it is best to speak with an expert company that is specialized in window sealing. You can be sure that the new seals are installed correctly, ensuring your windows remain energy efficient and safe.

Allow the seal to set

Double-glazed windows are a fantastic option for homeowners due to their ability to protect against the elements and also keep the heat generated by heating systems within. They also prevent sunlight from getting out. It is only able to do this when the window seal is properly installed. A broken window seal can result in condensation and mist between the glass panes, energy loss as well as draughts, and even security issues. It is therefore important to address a damaged seal as quickly as you can to avoid damage to the window as well as your home.

One of the easiest methods to determine if the window seal has failed is to feel for draughts and cold air coming into the frame's corners. If you can feel this, then the window gasket has become flat and is not creating an airtight seal. Another way to check 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 leak in the double-glazed window seal. This allows moisture to enter the section, compromising its insulation properties.

If you are a keen DIYer, there are a variety of DIY kits that can be used to reseal double glazing seals. They typically involve drilling a tiny hole through the window, cleaning the inside with a magnetic tool, inserting drying pellets that eventually disappear, and then filling the hole with clear cement. 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 essential to let the sealant dry completely prior to using it, whether you fixed your window seals by yourself or hired an expert. It can take between a few days to a few weeks for the sealant to fully cure, so it's recommended to wait until the time is right to open the window once more. A window that has been resealed should be treated with care and attention, so it's worth laying an old towel or duvet down on your work surface to shield it from scratches and stains.

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