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Replacing French Door Glass

It is relatively simple to replace a damaged glass pane inside a French Door. Cleaning the glass by removing the molding and trim and then installing a new pane is all that's required.

French doors feature multiple glass panes separated by muntin bars for functional purposes also known as Mullions. They are available in a variety configurations and can include triple-pane glass to increase energy efficiency, reduce sound and control the glare.

How do you replace french door a broken glass pane

Before you start you begin, put on rubber gloves and safety glasses to shield yourself from any broken pieces of glass that might fall off during the replacement process. Work in an open area such as a garage and keep your children out. It is best to remove the window frame from the sill to allow greater accessibility and mobility, but you can also replace a pane, without taking the entire window out of the frame.

Start by scraping off any old glazing compound or caulking around the edges of the sash using a putty knife. You don't want to damage the wood molding holding the window in place. You'll need it to hold the new pane.

If you are working with a steel casement window it might be anchored by metal glazing points. These points, along with the old putty, need to be removed before you can remove the window from the frame. A paint scraper or chisel should work however if you discover that the putty is too difficult to remove, gradually soften it using a heat gun. Keep the heat gun about an inch away from the glass and move it forward and replacing french door glass backwards to spread the warmth. Double-up the aluminum foil, then place it on the panes that are next to it. This will stop them from breaking due to heat.

Once the old glass has been removed, clean the inside of the window sash using an damp cloth to scrub off any dirt or dust. You can now install a new piece glass.

To cut a piece of glass to size first, determine the width and the height of the opening. To purchase a new glass pane that will fit into the door frame, you need to take these measurements and subtract an eighth inch from each side. Many hardware stores can cut a piece of glass for you in the event that they have the measurements.

Warm a handful of putty in your hands and roll it into a rope that is 3/4 inch thick. Place the putty on the edge of the exposed rabbet. Then, rest the blade of your putty knife at a 45 degree angle against the frame rabbet. To cut a section from the pane, move the knife in a smooth and straight line across the glass's edge. Repeat the procedure with the other edges of the pane. Then, scrape away the excess putty.

Take off the broken Pane

A broken pane in a french door seal replacement-style door not only an eyesore but can also pose a risk to safety. Replacing a pane of glass in a french doors glass replacement door is done in a few simple steps and is usually much less costly than replacing the entire door panel. The majority of homeowners can do this on their own, however professional assistance is available to those who require specialized tools or skills.

Start by getting rid of any cracked or broken fragments of the frame. Wear safety goggles and gloves to prevent glass shards from entering your eyes or on your face. Clean the glass pane opening to get rid of any remaining caulking or putty used to keep the old pane in place.

Next, you need to remove any molding or trim that was holding the pane of glass in place. This can be a challenge since it could require some prying to break the molding out. This is why it's important to wear a protective suit, and to have someone assist you in the process of prying if you need help. Label the pieces you're removing so that they can be returned to their original location.

After the molding has been removed, you can begin installing the new pane of glass. Go to a glass store and measure the opening of the glass. It's a good idea to get a piece of safety glass since it will not break as easily in the event that your French doors break again.

When you are ready to install your glass piece inside the opening, make sure it is aligned correctly. Apply a thin layer clear silicone caulk to the edge of the glass.

After the caulk has dried, you can replace the molding. If the nails that were originally used didn't penetrate the molding, you can hammer new wire nails into the holes created by the old nails. By drilling the holes prior to drilling, you can ensure that the nails don't split through the molding. A well-stocked hardware store carries tiny bits that can be used to drill the holes.

Cut a New Pane of Glass

Before ordering a new pane of glass, double-check that the frame's spacing and the edges of the window are in a straight line. You may need to adjust spring clips or the metal triangulars to hold it in place if you notice gaps. Also, you must make sure that the new pane is a adequate size for your opening. If it's too large, you may experience leakage or other issues when it is installed.

The first step is to create a work surface. With a putty knife scrape away the old compound on both sides of the frame, leaving the wood. If the rabbets of the frame are too rough to smooth out using a knife, lightly sand the edges and apply an exterior primer. This will stop the new glazing from absorbing moisture from the wood, which will reduce its life span.

Once the frame is clean and ready then warm a small amount of putty by kneading until it's soft and malleable. Apply a thin layer with the putty blade to the inside corners of the rabbets to create a bed on which the glass can rest. Repeat the process for the remaining exposed edges.

Once the putty has dried take any remaining metal glazing points from the grooves within the sash. Before you attempt to remove them, wear goggles with safety features to shield yourself from glass shattering. Heating guns with low settings can be used to gently warm the metal and loosen it so that you can remove it using pliers.

When the frame and glass are set, test the frame by sliding it into place. Make any adjustments needed before securing it in place with spring clips or steel triangles. Check that the distance between the frame and glass is uniform and even on all sides, and check the sash's movement to ensure that the new pane will not interfere with closing or opening the window. If you encounter any issues with the installation, you should consult an expert who specializes in restoration to help you restore and maintain your historic home.

Install the Pane of Glass

Test-fit the new glass pane to ensure it fits snugly before installing it. Take measurements of the width and height of the window opening by measuring it to the outside edge of the L channels. Subtract 1/8 inch from each measurement to find the size of glass you should purchase. It will be easier to install the pane if you slightly undersize it. This will also allow for seasonal expansion and contraction of the frame. Take your measurements to a hardware store or home center and have them cut a piece glass for you. You can cut the glass yourself, in the event that you have a large piece available.

After removing the glass pane, clean the window sash grooves. Remove any metal glazing points that were used to support the old pane. This can be accomplished using an e-type paint scraper or a Chisel. If the grooves are stuffed full of hardened putty, gradually soften it by using a heating gun. Cover the moldings and windows with aluminum foil to shield them from heat.

It is also possible to use an exterior primer to stop the putty from absorbing the natural oils. It is also recommended to clean the sash to get rid of dust and dirt from the grooves.

Knead a tiny amount of putty until it's soft and warm and then press it into the rabbets in which the glass will go. The appearance of the glass isn't crucial at this point. Press the new pane into the rabbets. Then, move it around and apply consistent pressure with your fingers to make sure it's seated properly.

Fill any holes around the glass in the frame with silicone caulk. Then, you can install the new glass. If the frame has any other fixing mechanisms, such as L channels, you can use a hammer and pry them out of the sash grooves. Remove any shards that may have come loose during the removal cost of replacing window with french doors the frame. To keep pests and water from entering your home, apply a clear silicone caulk over the bottom edge of frame at the point where it joins floor.