Repair Double Glazing: A Simple Definition

· 6 min read
Repair Double Glazing: A Simple Definition

Why You Should Hire a Glazier to Repair Double Glazing Seals

If window seals fail they can result in more energy bills and windows that are foggy. Hiring a professional to repair the damaged seals will stop the problem from becoming worse.

The window seals are crucial for the insulation that is provided by double glazing. They're easy-to-repair and can save you money in the end.

Take off the Old Seal

The seals may break due to various reasons. They can be damaged by improper installation, or they may be damaged in the course of time because of wear and tear. Although it is impossible to prevent a window from breaking however, you can take precautions to reduce the likelihood of this occurring. Avoiding the power washing of your windows for instance, can lower the chance of damage caused by high water pressure. Make sure that the manufacturer of windows doesn't recommend using reflective window films since they can damage the seal.

In the case of double glazed windows, the most frequent indication that the seal has broken is the appearance of condensation between the two panes of glass. This happens when the gas that acts as an insulator like argon or krypton that was vacuum sealed between the two panes of glass has escaped. When this happens the window will no longer be capable of keeping cold and moisture from your home.

It is good to know that repairing a broken window seal is quite simple. You can buy a new wedge gasket seal at any hardware store, and it can be easily installed inside your uPVC windows. If you're worried that you'll be unable to install the new seal properly spray water onto the window's frame to aid in lubricating it.

Before you begin installing the new seal, it is important to ensure that there aren't any obstructions within the grooves of your window frame. These can include melting 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 be a good fit in your window frame.

While it is possible to repair damaged uPVC window seal on your own, it's often best to leave this task to the professionals. A professional glazier is equipped with the tools and experience to finish the job quickly and with the least amount of risk to your uPVC window.

Clean the Surface

If double glazing windows are properly fitted and maintained, they offer excellent insulation and reduce noise pollution.  double glazing repair  damaged window seal could allow moisture and air to enter, which can cause many problems such as condensation. Moisture in a glass frame can be unsightly however it can also cause mold to grow and can damage the frame. Repairs by a professional are required. Other signs of a failed sealing include a draft that can be uncomfortable and costly to heat or a distortion in glass which can alter light transmission and impact on the view.

Double-glazed windows can be easily repaired, especially if you catch the issue early. Although it is possible to do this yourself however, a professional is recommended because they have the knowledge and access to the materials that will give long-lasting results.


To begin the process it is important to eliminate any silicone sealant in use, which can be done by carefully scraping away the old material using a sharp blade. After removing any sealant that was previously used the surface needs to be thoroughly cleaned. Once the surface is clean, the next step is to re-seal the window.

Before sealing, remove the bottom pane and turn 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 should be thoroughly cleaned with a clean, dry 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, you can use a small hole to insert a desiccate pack which will absorb any moisture between the two glass panes. The hole can be cleaned using rubbing alcohol (isopropyl) to stop the growth of mould.

Double-glazed windows are built to last, but they can fail at times. A lot of people require repairs to double glazing. The most common signs that the window seals have failed is condensation, drafts and a distorted look between the glass panes.

Apply for a New Seal

Whether you've recently moved into a new home or have just got your double-glazed windows window seals play an crucial role in keeping an airtight and energy efficient glass-to frame connection. As time passes, the seals can break down due to age and external factors such as weather. If the seals are damaged, you must make sure that you replace them as quickly as you can. This will stop moisture from getting into the space between the panes of glass which could cause condensation, a reduction in energy efficiency and even water damage to your property.

You should pick a time that has a low chance of rain to complete this task. You'll be working with a window open so you don't want large amounts of rainwater flowing into your home and possibly damaging the new seals. Wear protective eyewear if you're using power tools to take off old window seals. It's easy to get debris or dust into your eyes.

It's important to thoroughly clean the surface after taking off the old seal prior to applying the new one. Using a utility knife or putty knife, remove any remaining residues from the area and then apply a new coating of silicone caulking in order to seal the gap. Add a globule on the frame's exterior as well. This will 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. Especially in hot weather, it's not uncommon for seals to form cracks, or damp spots, so this is a great way to help maintain the integrity of your window.

Although you can reseal your windows yourself, if the problem is serious it's recommended that you get an expert window company to do the work on your behalf. This means you can be certain that the new seals are installed correctly to ensure your windows are safe and energy efficient.

Allow the seal to cure

Double-glazed windows are a fantastic option for homeowners since they shield against the elements and also keep heat generated by your heating systems within. They also block sunlight from escaping. It can only do this when the window seal is properly installed. A damaged window seal could result in condensation and mist between the glass panes, loss of energy as well as draughts, and even security issues. It is therefore crucial to address a broken seal as quickly as you can to prevent damage to the window and your home.

One of the simplest ways to test if your window seal is broken is to feel for draughts and cold coming in around the frame's corners. If you feel it, then the gasket has sunk and is no longer creating an airtight seal. Another way to check is to look for signs of misting and condensation between the glass panes of double-glazed windows. Both of these issues result from a leak in the double-glazed window seal. This allows moisture to get into that section, which can compromise its insulation properties.

If you are a keen DIYer, there are several DIY kits for resealing double glazing seals. These kits usually require drilling a tiny hole into the window and then cleaning it with a magnet. They then place drying pellets in the hole, which disappear and then 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.

Whether you have tried to repair your window seals on your own or hired a professional service to do the work, it is imperative to allow the new seal to dry prior to use. It can take a few days or even a few weeks to cure the sealant so you must wait until that time to open the window. It is important to clean windows that have just been sealed with care. To guard against marks or stains, you can lay down an old towel on the surface to work on.