Do-It-Yourself Double Glazing Repairs
Double glazing can help keep buildings warm, but it could also cause problems over time. Issues like leaks glass, broken glass or foggy windows may cause a loss of energy efficiency, expensive repairs, and potential health issues.
FENSA certified installers can help you repair and maintain your double glazing to meet the energy efficiency standards for legal compliance and resale value.
Broken Panes
A broken window can be a major problem, blocking light, air and even insects from entering your home. You can employ an expert to repair the damaged window, but you can also fix it yourself at a fraction of the cost a professional would charge.
You'll need to take out the old window. Begin by putting on protective glasses, work gloves and dust masks to shield yourself from glass shards as well as lead dust. Set up a level surface in an area that is well ventilated. It is recommended to put a drop cloth under the work area to catch any loose glass as it is removed. Keep an HEPA vacuum close by to remove dust, debris, and hazardous waste when you work.
Once the old window is removed and the old window is removed, use a knife to scrape off the old glazing putty. Be careful not to damage the wooden frame of the window. If the old putty has an especially difficult time getting off it is possible to use a heat gun to soften it. Make sure you wear safety goggles when using a heat gun, and use caution to avoid putting hot wood or glass fragments in your eyes.
Next, prepare the frame to receive the new pane. Take measurements of the opening and subtract 1/16 inch both ways to allow for expansion and contraction of the wood. Then, have your local hardware store cut a piece of double-strength glass that will fit the opening precisely. Dry-fit the new glass to ensure it is snugly fitted before putting it in.
After you have installed the new glass then apply a small amount of latex caulk around the perimeter of the opening for the weather seal. Then, install the glazing points to hold the new pane in the proper position. For standard sizes of window glass, you will only need to install two points per edge.
After the new glazing compound dries you can then paint it to match the rest. If you're worried about the possibility of cracks then you can use a sturdy strip of masking tape to prevent superficial cracks from worsening.
Frames that are damaged
You should examine the frame first. You will need to have it professionally repaired in the event of cracks, rust or corrosion, or if the frame is broken into two pieces. Metal frames are not able to be glued and any attempt to solder them or weld will cause permanent damage.
If the frame is not damaged, you may make use of a small brush and a bit of conservation detergent or water to wash the frame thoroughly. This will remove any dirt, grease, or dust that may have accumulated over time. Cleaning old frames with intricate carvings or gesso may reveal the original finish underneath the dust.
If the frame is damaged, you will require a pair needle-nosed pliers, wood putty and sandpaper as well as a small clamp. Remove the back of the frame, the photo, and the glass of the frame. Take care to break the frame at the corners, where you'll see the nails or brads. If possible, you can open the joints and scrape away any glue that is old and apply new glue.
Loose Compound
The glazing compound that keeps glass window panes within their wooden frames is a vital part of any historic building's energy efficiency. It seals the wood, binds the glass to the frame, and sheds moisture to stop water damage as time passes. The compound may break or have gaps that allow air to get in, lowering insulation values and causing higher utility bills. Making sure you are keeping up with repairs on your double-glazed windows helps keep them running smoothly and efficiently.
If you see drafts at the edges of your window frames, the weatherstripping seal may be worn out or loose. Replacing this seal will reduce the cost of energy and increases comfort. If you hear loud noises from outside, like machinery or traffic It could also mean that the glazing tape is damaged or is missing.
Remove the old tape from around the edge of the frame and scrub the area thoroughly. Apply a piece of fresh tape to the frame edge and press firmly. You can purchase this at any hardware store and it's an inexpensive way to improve the performance of your double-glazed windows.
Standard super glues are great for metal, wood, and other common materials. However they're not the best choice for glass surfaces. Find a glass-based adhesive like Loctite Extreme Glue Gel. This type of glue is formulated to resist moisture and ultraviolet light, which makes it an ideal choice for fixing double-glazed windows.
It is necessary to apply a degreaser on the exterior of your window frame and sash before you begin repairing it. This will ensure that the new glue adheres correctly. Prepare the area that will be coated using an oil-based primer. Make sure to prime the entire surface, including the back of the sash where it rests in the frame.
While you can fix many issues with your double-glazed windows, if they are severely damaged or no longer provide effective insulation, replacement may be the best choice. Consult with an experienced glazier or handyman to make the best decision. Regular inspection and repair of your windows will help them look their best and function smoothly for many years to come.
Emergency Glazier happen when the window seal fails and allows air to get between glass panes and gradually build in moisture. Foggy windows can lead to many issues, ranging from condensation and calcium deposits to black stains and fungus. It's not just unsightly but also causes a reduction in energy efficiency and increased heating or cooling costs. It is, however, possible to fix the problem. Foggy windows are usually caused by a simple water buildup, so the initial step is to get rid of as much of the moisture as possible. This can be accomplished by using a defogging agent or shaving cream. If none of these methods work, it's time to contact an expert.
The reason double pane windows function is because they have a space between them. This space is usually filled with argon or krypton, which are safe gasses that are more dense than air, and can reduce heat transfer even more. If the gas has leaked out the windows, they aren't being insulated properly. Replacing your windows with new IGUs will not only fix the fogging issue, but will also boost your home's energy efficiency as well.

Many homeowners are under the impression that they must replace their entire window if it starts to get foggy, however this isn't always the situation. Some glass shops will replace the insulation unit (IGU) only, without replacing the entire frame or sash. This is a cheaper option that is just as effective at fixing your windows.
Although there are DIY remedies for window condensation, like shaving cream or defogging spray, it is best to seek out a professional to ensure the job is done correctly and safely. A window repair expert will cut holes into the glass and then inject cleaning solutions into the space between the panes. The window repair expert will scrub the surface and dry the inside giving back the appearance and function of the window. To learn more about this process, or to schedule a no-pressure consultation at home, call a local expert in window replacement and repair.