7 Things You'd Never Know About Repairing Double Glazed Windows

· 6 min read
7 Things You'd Never Know About Repairing Double Glazed Windows

Repairing Double Glazed Windows

When double glazed windows "blow" in the wind, argon that is insulating escapes, causing the window to lose its energy efficiency. The good part is that blown double glazing is often repaired without having to replace your windows completely.

The most typical sign of a damaged window seal is moisture or condensation between double-glazed windows. This can be repaired by a professional which will save you the cost of a new window.

Remove the Sash

Double-glazed windows can add value and style to your home. They increase the energy efficiency of your home by keeping heat and cold out. In Minnesota's winters that are harsh, having double-glazed windows will help reduce your heating bills.

The primary distinction between double and single glazed windows is the gas that is injected into the space between the panes of air or argon. This is a significant improvement in the insulation properties of your windows because they stop the transfer of heat through the glass. Selecting an inert gas that has a low thermal conductivity, such as argon or Krypton which can help increase your window's insulating properties even more.

Double-glazed windows are also more secure than windows with a single pane. They are less difficult to break and can be fitted with modern security locking systems. They can also be equipped with laminated or toughened glass, making them more secure. Double glazed windows are more sturdy and less prone to sway in the wind or because of vibrations from heavy traffic which makes them a great choice for older homes.

Double-glazed windows are also made of low-energy glass which reduces the UV rays that penetrate your home. This will ensure that your carpets, paintings, and furnishings from fading. This is especially useful if you have windows that are directly in the sun for most of the time of the day.

Retrofitting old sash window with double-glazed windows is cheaper than buying new windows. The linings and cladding of your existing windows are in good condition which makes the task less demanding.

Installing double-glazed windows is faster than removing a window and replacing it. This means you can benefit from energy efficiency, increased security and reduced glare and UV damage to your furnishings at a lower cost.

Remove the Glass

Double-glazed windows differ from single pane windows because they feature two glass panes, separated by an air layer and the spacer. This provides insulation. The IGU, also known as an insulated glass unit (IGU) can be filled with gases like Krypton or argon for better insulation. As time passes, these units can be damaged and cease to function correctly. It is essential to remove any broken glass as safely and efficiently as is possible.

Replacing double-glazed windows can be a difficult DIY project that requires specialized tools and expertise. It is recommended to leave this task to a professional, who will employ the correct safety equipment and follow the correct procedure to avoid injuries.

It is important to do this since double-glazed windows are very fragile and are prone to crack or break. To ensure your safety while fixing your window, wear gloves that are protective and wear a respirator or mask. It is also important to ensure that the area around the frame is free of debris. It is also recommended to put a large piece of plastic over the area where the deglazing tool will score to catch any broken pieces of glass and make them easier to remove.


It is crucial to identify indications that double-glazed windows aren't working correctly. A window that is draughty is one of the main signs that your IGU is blown and doesn't provide adequate insulation. You can also notice if the windows are cloudy or there is condensation between them.

Double glazing isn't just an opportunity to save money on energy bills but also protect your furniture from heat and light. Furniture can deteriorate and break if exposed to sunlight for long periods of time, however double-glazed windows keep your furniture out of direct sunlight and will reduce the amount of heat that enters into your home.

In addition to being a great way to save on electric bills, effective double glazing can also boost the value of your property. If you're looking to sell your home in the near future, having double glazing installed is a great investment that could help attract potential buyers.

Remove the Gaskets

Double glazing is a great method to boost the energy efficiency of your home, however it can wear out over time. The visible signs of damage, draughts and condensation are all signs that it's time to fix or replace your double glazed windows.

A key part of the window assembly is the gasket, a butyl or neoprene seal that cushions the glazing and provides weather protection. Gasket degrading is the primary cause of leaks and moisture getting into buildings. These seals can be easily replaced without needing to replace the entire window.

The gaskets are often able to be repaired by pulling them away. It is much easier to repair uPVC frames than aluminum or timber. If you are unable remove seals manually then you can use a builder’s knife to pry the seals apart until it is possible to grasp it with your fingers. Once the seal has been removed and replaced, you can replace it with a brand new seal to ensure a tight fit and maximum efficiency.

After the seals have been replaced the window beading has to be removed. You can use a putty or lead knife to remove the window beading. Insert the blade of the knife between the frame and bead, in the middle of the longest bead. This will give you the most leverage to separate the bead from the frame.

After all the beading has been removed and the window glass is removed, you can remove the glass. The gap between the two panes must be between 12 and 12 millimeters, and it is important to fill the gap with Argon gas to ensure optimal thermal performance. A larger gap can be used to lower noise levels however it can reduce the insulation capacity of your windows.

Once the frame has been cleaned, it's an ideal idea to spray it with window cleaner prior to fitting the DGP. This prevents the tape from securing to the glass, allowing you the chance to place it in the right way.  window repair 's also worth wiping down the seals with an absorbent cloth and warm soapy water to prevent any damage.

Re-seal the window

If you notice that your double glazed windows are becoming cloudy or there is condensation between the panes, it might be time to replace them. This type of problem is a clear sign that the inner seal has failed to keep the insulating gases in. This is not uncommon and the rubber that holds in the insulating gas may break down due to wear and tear or improper installation.

A window specialist who is experienced will reseal the glass unit by putting the new seal over each of the gaps of insulation. The technician will fill the gaps with silicone caulk. This will keep the cold out and the warm air in during winter. This caulk will stop insects from getting into your home and also prevent moisture from getting in.

It is important to know that resealing an existing double-glazed window is not a DIY project, although it is possible to do it yourself. It is a tedious and time-consuming job that requires special tools to take off the old caulk, wash the area, and apply a new one. It is recommended to hire a professional glazier for the work to avoid injury and to ensure it is done properly.

There are instances in which double-glazed windows will not be repairable and must be replaced. This could include broken or cracked glass, significant damage to the frame, or serious decay. It is a good idea to consult a double glazing expert to find out what the best solution is in these situations.

Oftentimes, the misting of windows is a sign that the treatment of the glass in the factory has failed. The factory will treat the window with a low emissivity coating to reflect heat away. Additionally, it may pump in the gas argon to provide insulation. If these treatments fail, moisture can enter the gap between the glass panes and cause condensation. A professional can fix this issue by drilling tiny holes in the glass panes, and then injecting a dehydrating agent to remove the moisture. The expert will then fill the gap with a brand new insulating gas and seal it, without let any gas escape.