Double Glazed Windows Repairs
There are many reasons why your double glazed windows might require repairs such as condensation between panes to drop or sagged frames. The majority of these issues can be solved.
If your window or door is difficult to open, try oiling the hinges, mechanism and handles. This is a quick and inexpensive fix.
Broken Panes
When a window pane breaks it loses its insulation properties and can create draft. If the muntins that separate the glass panes are broken, water can leak between them causing condensation and mildew, as well as mould. This makes your home less efficient in energy use. A broken window is best repaired by a professional to ensure you get a proper seal and the optimum energy efficiency.
First, you'll need to take the broken glass off. Begin by putting a drop cloth underneath the broken window, and then cutting around the edges of the pane using an inexpensive glass cutter (available in most hardware stores). Before you begin, make sure to lubricate the cutter of this tool using an oil that is light. This will prevent the glass from shattering too easily. The ball-shaped end of the tool can be used to loosen the fragments. They should fall off relatively quickly.
Scrape any old glazing compound out of the recess of the frame after the glass has been removed. This will expose the glazier's point and metal clips that keep the pane in the frame. If there's any indication of corrosion, the clips must be replaced with new ones. If the window is made of wood the glazier points may be reused if they're still in good shape.
The next step is to prepare the surface of the frame for reglazing. Apply a continuous strip compound to the recess with a caulking tool. Make use of a high-quality glue such as glazier's compounds that is contained in a cartridge or conventional compound that comes in a tin. Allow it to dry before re-inserting the glass. Install the metal clips if they are on the frame. Finally, reinstall the divider muntins.
Condensation
Condensation can cause problems for double-glazed windows, particularly in winter. It's usually caused by high moisture levels within your home. Warm air is absorbed by cold glass and condenses to water droplets. These then collect in the corners or frame of the window. You can prevent this from happening by opening your windows more often and improving ventilation with extractor fans, and utilizing dehumidifiers. If condensation is still present you should contact an expert who can identify the problem and repair or replace the windows if necessary.
It's also important to know that condensation on windows with double glazing can actually be an indication of a failing seal. This is because the factory-applied vacuum seal can be damaged in time and allow cool air to move between the panes. This could lead to fogging of the window, and eventually mold growth if not addressed quickly enough.
For a quick fix to condensation, you could try using hair dryers to dry the excess moisture. However, window repairs is just temporary solution and should only be only used as a last resort. If the condensation has been left for a long time you might be facing dampness or even mould within your home, which should be addressed by a specialist.
As a long-term solution, you can get your double-glazed windows sealed by professionals. They will remove the affected glass pane and clean the gap. They'll then pipe hot air into the space to eliminate any moisture. During this process, they'll look for signs of damage, mildew or mould growth and apply an draught-proofing procedure to ensure your windows are operational and energy efficient again.
Draughts
As time goes by the rubber seals around the edges of your glass are likely to break down and this can cause a draught to form in the space between the two panes. It's an easy fix to replace the gaskets, which will create an airtight seal. This will keep warm air inside your home, and colder air outside. You can save money on your energy bill.
Double glazing that has mist could be an indication of blow-blown seals. The unit is made up of two panes of glass separated by the spacer bar to create an insulating space. It is then filled with gas, such as argon to make the window airtight. If the seal is blown the water vapour will get into your space through the gap. This can cause condensation between the glass panes that is not able to be removed.
Fortunately it is a simple issue to fix and windows can be replaced quickly by specialists who have the appropriate tools and know how to do it properly. The expert will employ tools designed to push the new seals into position and is generally faster than trying to do it manually. The tools have an edge that can be used to push seals into corners.
A professional could be able to seal your windows' by drilling a small hole into the window and then adding a desiccant, or putty. This is an economical alternative to replacements, and will offer a reliable draught-proofing solution for double glazing.
Faulty Hinges
Misted double glazing is a common issue that many people face. It can be caused by a broken or cracked glass frame or even a broken seal. It is possible to fix this problem. Usually, this means making an entirely new seal between the two glass panes. The new seal will help prevent condensation, draughts and leaks.
As soon as you notice any issues, you should contact the company that sold you the windows. Make sure you do this in writing and ask them to confirm that they've received your message. If there are any disagreements being resolved, writing everything down will help you prove your complaint.
A window repair professional may drill the gap between your windows in order to eliminate moisture and make a seal. This is a temporary fix and won't stop the return of moisture. Alternatively, it may be possible to replace the glass unit itself which will ensure that it is watertight.
It is important to keep in mind that you should only experiment with DIY fixes when you have the skills and knowledge necessary to be able to do it. Using super glue or another type of DIY solution can cause more harm in the long term. If you are unsure of what to do, it is always recommended to seek professional advice. You can locate an expert local to you who can offer double glazing repair by entering your postcode in the search box on Checkatrade. All of our tradespeople have been thoroughly vetted and checked to ensure you are sure they will provide a quality service.
Broken Seals
Window seals, or insulation gas fills, are what keep double-glazed windows in place. There are a variety of reasons that can cause them to break, such as age, weather conditions and power washing, so it's important to know what the signs are and how to repair them.
If a window seal fails humid air can leak between the two panes glass, causing fog. This is a common issue, and can cause the window to appear visually disoriented. Once the seal fails, gas like argon as well as other inert gases are lost from the window, diminishing the glass's insulation capabilities.
A professional glazier can replace a broken window seal with a new one. This can be costly and may not solve the fog issue. Some companies offer defogging which involves putting a vacuum pump inside the frame of the window to remove moisture and make the glass clear. This method isn't foolproof, and it doesn't replace inert gasses, so the fog could return.
A glazier can also replace the entire IGU (insulated glass unit) when it's beyond repair. This is the most cost-effective method and is a great choice if you are looking for a long-term solution. It's best to select an organization that offers warranties on replacement windows. This will ensure that any issues you might face are covered. This means you can be assured that you'll get the maximum value for your investment. Alternately, you can 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 decrease the number of repairs.