Glazing Repair - How to Repair a Cracked Window
Glazing can make a big difference in the energy efficiency of your home. This is particularly true for older double-glazed Windows.
While it is possible to change the glazing points when the window is in position, it is simpler and quicker when the frame and glass are removed. This is also an excellent occasion to change the gaskets made of rubber.
Broken Glass
Cracked windows are not only unattractive, but also allow valuable heat and sunshine to escape your home. It's possible to fix damaged glass without having to replace the entire window.
Start by putting on protective gloves and safety glasses. You can also apply duct tape or painter's tape to make an "X" on the glass that you intend to remove. This prevents any shattered pieces from falling when you work, which could protect you from serious injury.
If you've got a tiny scratch in your window glass, cover it with tape to keep out rain, wind, and insects. If the crack is only superficial just a single strip of tape is enough. However should the weather be likely to get worse before you can replace the window, you may prefer a sturdy plastic cover such as a trash bag or tarp.
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 glue was designed to adhere to glass and dry clear to give a perfect finish. Apply it to the crack in the glass and let it dry completely before applying a second layer.
Glass windows may also develop stress cracks. They are usually caused by large changes in temperature and they can quickly spread across the entire glass window if not treated. To stop stress cracks from occurring, score an arc using glass cutters close to the crack. This will prevent the crack from spreading and can slow it down for some days.
If you're replacing a broken window take measurements of the frame to determine the size of the new pane. It should be slightly smaller than the opening to allow for expansion and contraction and to make up for any imperfections in the glass or frame. After you've cut your new glass to size apply glaziers' compound around the edges of the frame and the glass. Once the compound has dried paint it in a manner that matches the frame.
Condensation inside of Double Glazed Windows
Condensation on the inside of double-glazed windows is usually an indication that the seal along the window unit has failed. This is an important issue as it means that heat from your home is being lost through the window and could be costly for you and your energy bills.
Double glazing has been designed to block heat transfer between the two panes of glass by sandwiching a layer air or vacuum between them. This creates a airtight seal and keeps warm air from exiting the home. If the glass is colder than the frame, condensation could form on the glass and cause damage to the window. If you have condensation on your double glazed window that you are unable to eliminate it by opening the windows, using extractor fans, using dehumidifiers, or by trickle venting, then you may need to call in an expert.
Condensation on the exterior of double-glazed windows is not common however it can happen when the seal has begun to deteriorate between the glass and the window frame. This is more prevalent in winter, when the temperature is lower, making it easier for condensation to form. The main cause of this is a flaw in the spacer that is placed between the window and the frame. The spacer is made up of desiccant which is very absorbent and will absorb any excess moisture.
This could lead to moisture leaking into the gap once the desiccant has been saturated. This could cause condensation and water to build up in the gap, which is difficult to remove.
Most reputable window companies offer a warranty and will replace the unit and glass of a window if it's damaged due to condensation. It is essential to report any issues to your window installer as soon as you notice them so that condensation can be addressed as quickly as possible to prevent further damage to the window unit and the surrounding frame.
Shattering Window Glass
A window that is cracked isn't just an aesthetic issue, it could also pose a security risk, especially if the crack has been expanding. It is recommended to get it repaired as quickly as you can. Glass adhesives are available for windows in vehicles which you can purchase on the internet or at many auto repair shops. You can also make use of a glazing compound for home use, which is readily available at many hardware and home improvement stores.
Put on thick gloves and safety goggles before you start any task. The area should be swept to remove any large pieces of shards. You should also vacuum up any chips. This will prevent them from cutting you or a glazing repair technician later on.
It's a good idea work on a ladder instead of standing on the ground. This will allow you to reach all the parts of the frame more easily and will protect your glass from falling. Before double glazing repairs start it's best to clean the rabbet. This is the area where glass will be placed. Clean it and then apply a coat of linseed oil to the rabbet, which will help the new putty stick securely.
After the frame has been cleaned and the rabbet is ready, it's time to prepare for the replacement of the damaged pane. Purchase a piece of double strength glass that is 1/8 inch smaller in both directions. Also, you'll need to purchase glass points, which are steel triangles that keep the glass in the right place.
After removing the window sash and the pry-bar flat, use it to gently pry the sash off of the moulding of wood. You may have to scrape old glazing putty off with a utility blade or chisel. Use the heat gun to warm any putty which isn't able to be removed easily. This will make it much easier to remove it.
When the frame is out of the mold, carefully press the glass in its place. Fill in the gaps using either a glazier's tipped or a knife. Once the putty has dried paint it in a manner that matches the rest of the frame. Lap the paint slightly over the edge of the compound and onto the glass to completely seal it.
Replacement Window Glass
Wear eye protection and gloves when replacing a broken pane of glass. Tape the window's edges to prevent it from breaking when you take it off.
Begin by removing the old glaze compound and glazing points (small metal triangles) from the sash frame using a utility knife. Then, clean the entire frame opening and apply a coat of linseed oil to help the new stick stick stick to it better.
Once the frame is in place, take measurements for the new window pane. Then buy it from a home improvement store or another retailer. The panes should be 1/6th inch smaller in each direction than your measurement. This will ensure a snug fit.
Installing the new window is simpler than you think, however make sure you follow the directions of the manufacturer to ensure correct fit and a long-lasting life for your replacement pane. Use a wirebrush for removing any old paint or wood gunk from the frame's opening. Then sand the wood to the wood's surface to increase the seal.
Use the tip of the putty blade when installing the new window to lightly place it against the wood frame. The glazier's tips should be pressed into the frame every six inches. This will help hold the new pane firmly in place.
After the frame has cured and the joint is painted, you can paint it several times until it matches the frame. Let the paint dry completely before you begin cleaning and maintaining your window. Maintaining windows in good condition and ensuring they work correctly will extend their lifespan and increase the energy efficiency of your home. If your windows are outdated or not in great shape it is possible that you would be better off having a full window replacement. If you decide to go this option, we suggest you choose the highest-quality, well-insulated window that can reduce the cost of your utility bills. The type of window that you choose will also affect the total cost of your project.