Double Glazed Windows Repairs

Double-glazed windows require repair for a variety of reasons, like condensation between the panes, draughts, or frames that are sagging. Fortunately, a majority of these issues can be resolved.

Try lubricating the hinges, handles, and mechanisms of your window or door in case it is hard to open. This is usually a low-cost solution that is quick and easy to fix.

Broken Panes

When a window pane is broken, it loses its insulation properties and could cause a draft. If the muntins which divide the glass panes are also broken, moisture can leak between them causing condensation or mildew, or mould. This can make your home less efficient in energy use. It is best to have a professional repair a broken window to ensure the most effective seal and energy efficiency.

Firstly, you'll need to remove the broken glass. Begin by putting a drop cloth beneath the broken window and then scoring around the perimeter of the pane with an inexpensive glass cutter (available in most hardware stores). It's recommended to lubricate the cutter with a light oil before you begin. This will stop the glass from shattering too easily. The ball-shaped end of the tool can be used to break the pieces. They should be removed quite quickly.

Once the glass is removed, scrape away any old glazing compound from the recess area of the frame. This will expose the glazier's clips and pins that keep the glass in place. If there's evidence of corrosion, these clips should be replaced with new ones. If the window is made of wood, the glazier points can be reused if they are still in good condition.

The surface of the remaining frame needs to be prepared for the re-glazing. Apply a continuous strip of compound to the recess with a caulking tool. Use a high-quality putty such as a Glazier's compound in a cartridge. Let it dry before installing the glass. Install the metal clips if they are attached to the frame. Reinstall the divider muntins.

Condensation

Condensation is one of the most common issues that double-glazed windows may experience, especially in the wintertime. It's usually caused by excessive humidity in the home where warm air collides with cold glass, which forms into water droplets and then collects in the corners of your windows or across the frame. This can be prevented by opening windows more regularly and improving ventilation by installing extractor fans, and using dehumidifiers in order to reduce the amount of moisture. If condensation persists it is recommended to contact an expert who can identify the issue and repair or replace the windows if necessary.

Condensation on a double-glazed window is a sign the seal has failed. This is due to the factory-applied vacuum seal will become degraded in time, allowing cool air to move between the panes. This could cause the window to become cloudy and eventually develop mold if it is not addressed quickly.

A hairdryer can be used as a quick solution to get rid of excess moisture. However, this is only a short-term solution and should only be only used as a last resort. If the condensation has been allowed to sit for too long, you may be experiencing mould or dampness within your home, which should be addressed by a specialist.

As a long-term solution, you can get your double-glazed windows sealed by experts. They'll remove the damaged glass pane and clean the gap. They'll then pipe hot air into the space to dry out any moisture. During the process, they'll examine for any the presence of mildew, mold or damage growth, and then apply a draught-proofing treatment to ensure your windows are functional and energy efficient once again.

Draughts

Rubber seals may wear out over time and cause a draft between your two panes. This is usually a minor problem that can be fixed by re-installing the gaskets and this will create a strong and airtight seal. This will keep the warm air inside your home, and the colder air out, saving you money on your energy bills.

Misted double glazing is a sign the seals inside your sealed unit (sometimes called a DGU) have blown. The unit is made up of two glass panes filled with argon separated by a spacer to form an airtight window. If the seal has blown, water vapour will enter your room via the gap. This can result in condensation between the glass panes, which can't be sucked out.

Fortunately, this is an easy issue to fix and windows can be replaced quickly by experts who have all the right tools and know how to do it right. The professional will employ an instrument designed to push into the new seals. This is typically faster than doing it by hand. The tools also have a pointed tip which can be useful for pushing seals into the corners.

A professional might be able to reseal your windows by drilling a small gap into the window, and then adding a desiccant or putty. This is a more cost-effective solution than replacements and will give you an effective draught-proofing solution for your double glazing.

Faulty Hinges

Many people have had misted double glazing. This can be caused by broken or cracked glass frame or even a broken seal. The good news is that it is often solved. Typically, this is done by creating a new seal between the two glass panes. The new seal will stop condensation, draughts and leaks from occurring.

Contact the company from which you purchased your windows and tell them of any issues immediately you discover them. Make sure you do this in writing, and ask them to confirm that they've received your notification. Making sure that everything is in writing will make it easier to resolve any disputes arise, as it is easier to prove that you actually complained.

In certain situations the window repair expert may be able to drill a hole in your windows to draw moisture out and create a new seal. However, this is typically only a temporary fix and will not stop moisture from returning. Alternatively, it may be possible to replace the glass unit itself to ensure that it is watertight.

Remember that you should only try DIY fixes with the knowledge and skills you have are adequate. Super glue or other DIY solutions can result in more damage over the long term. It is recommended to seek help from a professional when you aren't sure what to do. You can locate an expert local to you who can offer double glazing repairs by entering your postcode in the search box on Checkatrade. Our tradespeople have been thoroughly vetted and checked and you can be sure that they will offer a quality service.

Broken Seals

Double-glazed windows are held in place by seals on windows or gas. They are susceptible to damage due to many elements, including weather conditions, age, and power washing. It is crucial to be aware of the signs and how to fix them.

If a window seal is damaged humid air can leak between the two panes of glass, creating fog. This is a common issue that can cause the window appear to be distorted. Once the seal fails, argon and other inert gases are lost from the window, thereby reducing the glass's insulating qualities.

A damaged window seal can be fixed by replacing it with an entirely new one by a professional glazier. However, this could be costly and might not resolve the fog problem entirely. Certain companies offer defogging solutions that involve putting a special vacuum pump in the window frame to eliminate the moisture, leaving the glass free of fog. This method is not foolproof and does not replace the inert gasses, which means that the fog may come back.

If the IGU (insulated unit) is damaged beyond repair, a glazier may replace it. This is typically the most cost-effective solution and is a great option in the event you're seeking a long-term solution. It's best to select an organization that offers a warranty on replacement windows. This guarantees that any issues you may have are covered. This way, you can rest sure that you'll get maximum value for your investment. You can also avoid the problem by selecting an item of high-quality and following the maintenance instructions given by the manufacturer. This will prolong the lifespan of the window and decrease the number of repairs.