Glazing Repair - How to Repair a Cracked Window
Glazing can make a huge difference to the energy efficiency of your home. This is especially true for older double-glazed Windows.
While it is possible to replace glazing points while the window is in place, it is much simpler and quicker if the glass and frame are removed. It is a good idea to replace the seals made of rubber.
Broken Glass
Cracked windows aren't just unattractive, but also allow valuable heat and sunshine to escape your home. Fortunately, it's often possible to repair a broken window pane without the need for full replacement.
Start by putting on protective gloves and safety goggles. You can also use duct tape or painter's tap to create an "X" on the glass you plan to remove. This prevents any shattered pieces from falling while you work, which can keep you from serious injuries.
If you have a small scratch in your window glass you can cover it with tape to keep out rain, wind and insects. One strip of tape is sufficient for cracks with a superficial appearance, but if you're worried about the weather getting worse before you can replace your window, use an extra-strong plastic cover such as a tarp or a trash bag, to hold the glass in place until you can find a permanent solution.
For cracks that aren't as shallow, try using a strong adhesive that is specifically designed for windows, like Loctite Super Glue Glass. This high-tech glue was designed to bond to glass and dries clear for a flawless finish. Apply it to the cracks in the glass and allow it to dry completely before applying a second layer.
Stress cracks are another common issue that can affect your glass window. They are usually caused by large changes in temperature and they can quickly spread across the entire glass window if not treated. To prevent stress fractures, use a glass cutter to cut a small circle near the crack. This will prevent the crack from spreading and slow it down for several days.
Take a look at the frame of the damaged window 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 cutting the glass, apply glaziers' compound around the edges of the frame and glass. Once the compound dries then paint it over it to match the frame of the window.
Condensation on the Inside of Double Glazed Windows
Condensation on the interior of double-glazed windows is typically an indication that a seal around the window unit has failed. This is a significant issue as it means that the heat that is coming from your home is being lost through the window, and could be costly for you and your energy bills.
double glazing window repairs glazing is designed to block heat transfer between the two panes of glass by sandwiching a layer air or vacuum between them. This creates an airtight seal that keeps warm air from exiting the home. If the glass is cold or colder than the frame then condensation will form on it and damage the window. If you have condensation on your double-glazed window that you are unable to eliminate it by opening the windows, by using extractor fans, dehumidifiers, or by trickle venting, then you may need to call in an expert.
Condensation of the outside of double-glazed windows is uncommon however it can happen when the seal has started to weaken between the glass and the frame. This is more common in winter, when the temperatures are lower and it's more easy for condensation to form. This is caused by an issue with the spacer used between the frame and the window. The spacer usually contains desiccant that is extremely absorbent and can absorb excess moisture.
This could lead to water leaking through the gap once the desiccant has been saturated. This could cause condensation and water to build up in the gap, which is difficult to clean out.
The majority of reputable window manufacturers offer a warranty and replace the glass and unit of a window if it's damaged by condensation. Make sure to report any issues as soon as you can to your window installer so that the condensation can be repaired as quickly as possible to prevent further damage.
Shattering Window Glass
A cracked window pane isn't just an aesthetic issue, it could also be a security risk, especially if the crack has been growing. It is recommended to get it fixed as soon as possible. There are several ways to go about it with glass adhesives, for instance, using ones designed for vehicle windows, which can be purchased online or at many auto repair shops. You can also apply a glazing compound for home use, which is readily available at many hardware and home improvement stores.
Put on a thick pair of gloves and safety goggles before you start any work. Clean the area thoroughly to remove any large pieces of shards. You should also vacuum up any chips that have fallen. This will stop them from cutting yourself or a glass repair professional in the future.
It is a good idea to climb a ladder instead of standing on the floor. This will enable you to reach all the parts of the frame with ease and also protect you from glass falling. Before you begin it's best to clean the rabbet. This is the area that glass will be placed. Apply a coat of linseed to the rabbet, then wipe it down. This will help the putty to stick.
After the frame has been cleaned and the rabbet is prepared, it is time to make the replacement pane. Take measurements of the width and height of the opening both ways, then order an item of double-strength glass that's 1/8 inch shorter in both directions. You'll need to purchase glass points which is a metallic 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 flat pry bar. You may need to scrape off old glazing with a knife or chisel. Use the heat gun to warm any putty which won't come off easily. This will make it much easier to remove it.
When the frame is out from the molding then carefully press the new glass into its new location. Fill in the gaps with either a glazier's tipped or a knife. Once the putty is dry paint the frame to match. Paint a little bit over the edge of the compound, then onto the glass to completely seal it.
Replacement Window Glass
Wear protective eyewear and gloves when replacing a damaged piece of glass. Tape the window's edges to stop it from breaking when you remove it.
Make use of a utility knife to remove the old glazing compound from the wood frame and glazing points (small triangles of metal). Clean the frame opening and apply a layer of linseed oil in order to help the new putty stick to it better.
After the frame is made, measure it to determine the size of the new windowpane. Then, purchase it from a home improvement store or another retailer. The panes should be 1/6th inch smaller in each direction than you measurement. This will ensure a snug fit.
It's not as difficult as you think to install the new window. But, it's important to follow the instructions provided by the manufacturer to ensure a perfect fit and long-lasting replacement pane. Make use of a wirebrush to clean any old paint or gunk from the frame opening. Then sand the wood until it is the bare wood in order to strengthen the seal.
When putting the new pane in place, use the tip of your putty knife and gently bed the new window against the wood frame. Put glazier's tips in the frame every six inches. This will help hold the new window securely in position.
After the frame has cured and the joint is painted, you can paint it several times until it matches the frame. Allow the paint to dry completely before cleaning and maintaining your windows. Maintaining windows in good condition and ensuring that they function correctly will extend their lifespan and increase the energy efficiency of your home. If your windows are old or are in poor condition it is possible that you would prefer a full window replacement. If you opt for this option, we recommend selecting a high-quality insulated window to lower your energy costs. The type of window you select will also impact the overall cost of your project.