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Double Glazed Windows Repairs

There are many reasons why your double-glazed windows may require repair including condensation between panes to draughts and dropped or sagged frames. Fortunately, the majority of these issues can be resolved.

If your door or window is difficult to open try oiling the mechanism, hinges and handles. This is usually a low-cost temporary fix.

Broken Panes

If a window pane is damaged and shattered, it loses its insulation and can cause a draft. If the muntins that separate the glass panes are broken, moisture can leak between them causing condensation, mould or mildew. This will make your home less efficient in energy use. A broken window is best repaired by an expert to ensure that you get a proper seal and the optimum energy efficiency.

The first step is to remove any broken glass. Begin by placing a protective drop cloth under the window repairs that has been broken and cutting around the perimeter of the pane using an inexpensive glass cutter (available at most hardware stores). It's a good idea to grease the cutter with lightweight oil before you begin. This will stop the glass from breaking too easily. The ball-shaped tip of the tool can be used to loosen the fragments. They should fall off relatively quickly.

Scrape any old glazing compound off the recess of the frame after the glass has been removed. This will reveal the glazier's facets and metal clips that hold the pane in the frame. If there's evidence of corrosion, these should be replaced with new ones. If the window is wooden the glazier's gilder's points can be used again if they're in good condition.

The surface of the remaining frame needs to be prepared to allow re-glazing. Apply a continuous strip of compound to the recess using a caulking tool. Make use of a premium putty such as glazier's compounds that comes in a cartridge or a conventional compound that comes in a tin. Let it dry before installing the glass. Reinstall the metal clips, if they are attached to the frame. Reinstall the divider muntins.

Condensation

Condensation is a concern for double-glazed windows, particularly during winter. It's typically caused by too much humidity in the home, with warm air meeting cold glass. This then condenses into water droplets and collects in the corners of your windows or across the frame. You can stop this from happening by opening your windows more frequently and improving ventilation with extractor fans, and utilizing dehumidifiers. If condensation remains a problem, it's important to contact a professional to get to the root of the issue. You can then fix or replace your windows when necessary.

Condensation on a double-glazed glass window is a sign the seal has failed. This is due to the factory-applied vacuum seal will become degraded over time and allow cool air to make its way between the panes. This could lead to fogging of the window and eventually, mold growth if not addressed quickly enough.

As a quick fix for condensation, you could try using hair dryers to dry the excess moisture. This is a temporary solution and should only be used as a last resort. If the condensation is left for a long time you may be experiencing dampness or even mould within your home, which must be dealt with by a professional.

As a long-term solution, you can get your double-glazed windows sealed by experts. They'll remove the affected pane of glass, clear the gap and pipe into hot air to evaporate any remaining moisture. During the process, they'll also inspect for any damages or growth of mildew, mould or mildew and apply a draught proofing treatment to ensure that your windows are functional and energy-efficient once again.

Draughts

The rubber seals get worn out over time and cause drafts between the two panes. It is an easy fix to replace the gaskets, which will result in an airtight seal. This will keep the warm air inside your home and the colder air out, local thereby saving you money on your energy bills.

Misted double glazing is a sign that the seals of the sealed unit (sometimes called a DGU) have been blown. The unit is composed of two panes of glass filled with argon separated by a spacer, creating an airtight window. If the seal has been blown the water vapour will get into your home through the gap. This can result in condensation between the glass panes that can't be sucked out.

This is a simple problem to solve and windows can be swiftly repaired by professionals using the appropriate tools. The professional will employ tools designed to push the new seals into place and this is normally quicker than doing it by hand. These tools have an angled tip that can be used to push the seals into corners.

In certain situations professionals might be able to "reseal' your windows by drilling a small opening into the window and then adding a special desiccant material or putty. This is less expensive than replacing your double-glazed windows and will still provide you with an effective air-tight system for draughtproofing.

Faulty Hinges

Many people have encountered misted double-glazing. It could be caused by a damaged seal or crack in the glass, or an issue with the frame or mechanism. The good news is that this can often be repaired. It is usually a matter of making a seal between the two glass panes. The new seal will prevent leaks, condensation and draughts from happening.

Contact the company through which you bought your windows and inform them of any issues immediately you discover them. Make sure to put this in writing and request them to confirm that they've received your notification. If there are any disputes being resolved, writing everything down will help you prove your claim.

In some cases an expert in window repair will cut the hole in your windows to draw out moisture and make a new seal. This is only temporary and won't stop the return of moisture. In addition, it might be possible to replace the glass unit itself, which will ensure it is watertight.

It is important to keep in mind that you should only experiment with DIY fixes if you have the skills and knowledge necessary to do so. Super glue or other DIY solutions can result in more long-term damage. It is always best to seek help from a professional in case you are unsure of what to do. You can find a local tradesperson who offers double glazing repair by entering your postcode into the search box on Checkatrade. All of our tradespeople have been thoroughly vetted, and screened to ensure you are certain that they will provide top-quality service.

Broken Seals

Double glazed windows are held in place by window seals or insulation gas. A variety of factors can cause them to break, including weather conditions, age and power washing, therefore it's essential to be aware of what signs are and what to do to fix them.

If a window seal is damaged it allows humidity to get into the two glass panes and create fog. It's a common problem, and it can cause the window to look visually distorted. When the seal fails it is when any argon or other inert gas will be removed from the glass, thereby diminishing its insulating properties.

A professional glazier can replace a broken window seal with a new one. This can be costly and may not solve the fog issue. Certain companies offer defogging solutions that involve putting the vacuum pump of a specific type inside the window frame to eliminate the moisture and make the glass clear. This method isn't 100% reliable, and it does not replace the inert gasses, so the fog could be re-created.

A glazier is also able to replace the entire IGU (insulated glass unit) in the event that it is beyond repair. This is the most cost-effective option and can be a great option if you're looking for a long-term solution. But, it's best to choose a firm with a guarantee for replacement windows to ensure that any issues are protected. This way, you can rest sure that you'll get most value from your investment. You can also attempt to avoid this issue by choosing a premium window and following the manufacturer's care instructions. This will extend the life of the window and reduce the number of repairs.