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The 10 Most Scariest Things About Glazing Repair
Glazing Repair - How to Repair a Cracked Window

Glazing can have a significant effect on the efficiency of your house. This is especially true for older double-glazed Windows.

While it is possible to replace glazing points when the window is still in place, it is much faster and simpler if the glass and frame are removed. It is a good time to replace the rubber seals.

Broken Glass

Glass that is cracked isn't just ugly, it can also let valuable sunlight and heat escape your home. Fortunately, it's often possible to fix a broken window pane without the need for full replacement.

Wear safety glasses and gloves. You can also use duct tape or painter's tap to create an "X" on the glass that you intend to remove. This will stop any broken glass from falling onto your work surface as you work.

Cover a small crack on your window glass with tape to keep insects, water, and wind out. One strip of tape is enough to cover any cracks that are superficial but if you're worried about the weather getting worse before you can replace your window, consider using a more durable plastic cover like a tarp, or a garbage bag, to hold the glass in place until you can obtain a permanent fix.

For cracks that aren't as shallow try using a tough adhesive that is specifically designed for windows, like Loctite Super Glue Glass. This high-tech adhesive is formulated to adhere to glass and it dries crystal clear to give the perfect finish. Apply it to the crack and allow it dry completely before applying a new layer.

Stress cracks are a different issue that can occur to your glass window. Stress cracks are usually caused by drastic temperature changes and can quickly spread across the entire window if they are not repaired. To avoid stress fractures using a glass cutter, you need to cut a small arc close to the crack. This stops the crack from spreading and can slow it down by a few days.

Examine the frame of the damaged window to determine the size of the new pane. It should be slightly larger than the opening in order to allow for expansion and contraction and to account for any imperfections in the frame or on the glass. Once you've cut the glass to the proper size, apply glaziers' compound around the edges of the frame and the glass. Once the compound dries, paint over it to match the frame of the window.

Double Glazed Windows Condensation Inside

Condensation on the interior of double-glazed windows is usually an indication that a seal around the window unit has failed. This is a serious problem and could mean that heat is being lost from your home through the window.

Double glazing is designed to stop heat transfer between two panes, by sandwiching an air or vacuum layer between them. This creates a tight seal that stops warm air from escaping. However, if the glass is colder or colder than the surrounding frame then condensation will accumulate on it and damage the window. If you are unable to remove condensation from a double-glazed window by opening windows or using extractors, dehumidifiers, or trickle venting, then you might require the assistance of an expert.

Condensation on the outside of double-glazed windows is uncommon However, it could happen if the seal has begun to deteriorate between the glass and the frame. This is more common in winter, when the temperature is lower, making it easier for condensation to develop. The main cause of this is a fault in the spacer that is placed between the window and the frame. The spacer is filled with desiccant which is extremely absorbent and will soak up any excess moisture.

The issue is that when the desiccant becomes saturated it begins to break down and moisture can start to leak through the gap between the glass units. This can result in water and condensation in the gap, and can be very difficult to get rid of.

Most reputable window companies provide a guarantee and will replace the unit and glass of a window in the event that it is damaged by condensation. It's essential to report any issues to your window installer immediately you notice them so that condensation can be fixed as soon as possible in order to prevent further damage to the window unit and the frame surrounding it.

Shattering Window Glass

A cracked window pane is more than an aesthetic issue. It could also pose a safety risk, especially when it's spreading. It is recommended to get it repaired as soon as you can. There are many methods to fix it by using glass adhesives designed for vehicle windows and can be bought on the internet or at a variety of auto maintenance stores. double glazing repairs can also make use of a glazing compound for home use that is readily available at many hardware and home improvement stores.

Put on thick gloves and safety goggles prior to begin any task. Clean the area thoroughly to remove any large pieces of shards. You should also vacuum any chips. This will prevent them from cutting you or a glass repair person in the future.


It's a good idea to climb a ladder instead of laying on the floor. This will allow you to reach all the areas of the frame, and will ensure that you are safe from falling glass. It's also recommended to wash the rabbet prior to proceeding to the part of the frame around the window frame where glass will be. Clean it and then apply a coat of linseed oil to the rabbet. This will help the new putty stick in place.

After the frame has been cleaned and the rabbet ready, it's time to get ready for the replacement of the damaged pane. Find the height and width of the opening both ways Then, you can order the double-strength piece of glass that's 1/8 inch shorter in both directions. You'll need to purchase glass points which is a steel triangle that keeps the glass in place.

With the window sash removed from the way, carefully pry it away from the wood molding with a straight pry bar. You may need to scrape old glazing putty off using a utility blade or chisel. Then make use of the heating gun to warm any putty that isn't able to be removed. This will make it easier to peel it off.

Once the frame has been removed from the mold and the frame is pressed gently into the new glass in its place. Then, using the help of a putty knife or glazier's point, fill the gaps around it and smooth them out. After the putty dries, paint it to match the frame. Paint the glass and the compound by overlapping it slightly.

Replacement Window Glass

If you're replacing a broken window, be sure to wear eye protection and gloves to shield yourself from glass shatters. Tape off the area around the damaged window to prevent it from shattering again in a different area after you remove it.

Utilize a utility blade to cut off the old glazing compound from the frame and glazing points (small triangles of metal). Clean the frame opening, and then apply a coat of linseed to make sure the new glue sticks better.

Once the frame has been constructed, take measurements to determine the dimensions of a new windowpane. Then, purchase it from a home improvement store or another retailer. Make sure to order the pane at least 1/6th inch smaller in every direction than the measurement to ensure an ideal fit.

Installing the new window is much easier than it sounds, but ensure you follow the instructions of the manufacturer to ensure the correct fit and a long life for your replacement pane. Make use of a wirebrush to clean any old paint or wood gunk from the frame's opening. Then sand the wood to the wood's surface to strengthen the seal.

Make use of the tip of the putty blade when putting in the new pane to lay it gently against the wood frame. The glazier's tips should be pressed into the frame every six inches. This will hold the new pane firmly in place.

After the frame has dried and the joint is painted, you can paint it multiple times to match the frame. Let the paint dry completely before you begin cleaning and maintaining your window. Maintaining your windows in good condition and operating correctly will prolong their useful lives and boost your home's energy efficiency. If your windows are older or are in poor condition, you may be better off having the complete replacement of your windows. If you choose this option, we recommend choosing a high-quality insulated windows to cut down on your energy bills. The kind of window you pick will also affect the overall cost of your project.