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How to Replace Window Panes

A damaged or cracked window is an inconvenience. This can be an opportunity to upgrade your windows replacement to energy efficient or insulated ones and enjoy advantages like improved comfort, increased resale values and reduced utility costs.

You can do it yourself for a less than what it would cost to hire an expert. It requires the right equipment and an hour or two of your time.

Glass

If your single-pane windows are outdated damaged, cracked or deteriorating replacing them with modern glass that is tempered or insulated will increase energy efficiency and reduce noise while preserving the historic integrity of older homes. The replacement of windows is simple and can be done by homeowners with basic hand tools. You will also need a replacement window pane, glazier's suggestions, pliers, and latex glazing putty. If you need to, you can make use of a heat gun to warm the old putty. Before starting, wear protective gloves and goggles since working with broken glass could cause injuries.

Remove any broken glass pieces that remain. It is recommended to use pliers for this however a flathead could work equally. Then, use a wood chisel or putty knife remove the rest of the old putty around the frame and the sash. Work slowly and carefully, taking care not to break the current window sash. It is best to work on a sturdy ladder rather than the ground and have someone standing below the sash to help hold it in place.

Make sure the window frame is ready to accommodate the new pane after you have removed the old glue. Measure the width and height of the opening for the sash by subtracting 1/8 inch from each measurement (to allow for seasonal expansion and contraction). Bring these measurements to the nearest hardware store or home center, and have a piece of stock glass cut to size. You can cut the glass yourself if you have the appropriate tools.

After putting in the new glass Apply caulking on the edges. This will make the glass weatherproof. Install a glazier’s point on both sides of the frame. This will ensure the pane. The points shouldn't be too tight that they create friction between the frame and sash, but they also should not be too loose.

Before applying the putty, knead it thoroughly until it is soft and free of lumps. Then you can roll it into pencil-sized strips. The first strip should be placed to the corner of the frame, moving from one corner to another to ensure it is even and smooth.

Glazier's Points

The glazier's points are small triangular pieces of metal that allow glass to be secured into the window frame without causing damage to the delicate surface. It's easy to understand how to use this nefarious tool, and you'll save money on the expense of an installation by a professional.

After getting rid of the old putty glazier points, and any other residue, clean the frame thoroughly using a utility knife. If necessary it is necessary to lightly sand the wood in the grooves of the rabbet to smooth out rough spots. If you decide to sand wood, cover it with painter's tape to protect it from damage caused by accidental sanding.

Note down the dimensions of the frame. These dimensions can be taken to a home center or hardware store and the new pane will be cut to a smaller size. This will ensure a secure fit, and allow for expansion and contraction.

Place the new pane into the frame and push it in with your hands. Then, you can use the point of your chisel, or the back of the putty knife to make a tap on the glazier's points as illustrated in Figure 11. When you're done, they should be level with the top edge of the pane, and the shoulders of the points should be just below the rabbet's lip. groove.

Apply a thin layer of glazing compound on the rabbet grooves as well as the edges of the new glass. This will seal and protect the edges. Let it dry and cure completely.

When the glazing compound is dry, you're ready to install the new window sash. The first step is to coat the wood with a thick layer of linseed. This will stop the new putty from drying out or cracking due to the moisture it absorbs. Apply this coat using a brush or the tip of your putty knife, then use the chisel or the back end of the putty knife to gently press the new sash and glazier's tips into the grooves of the rabbet. Repeat this process at intervals of 10 inches all around the frame.

Putty

A baseball that is thrown or an unintentional rock, or falling branch could cause a window to crack or break. Fortunately, windows can be repaired by simply putting a new piece in the proper place. The glass is held in place using a small metal clip called the glazier's pointed and putty, also called glazing compound. Before installing a replacement double glazed window pane, first get rid of the old one and clean up the area with a rag and an abrasive scraper that is a pull type or an abrasive wood chisel. Wear protective glasses and gloves while you do this work. You'll require a heat gun if the window is glued into the frame.

If you're planning to replace window pane the original sash, take off the molding that supports the old pane. Then sand the sash to ensure it's level and ready for a new caulk. After the sash has been re-installed then, apply a new silicone caulk to the glass to ensure that it won't leak or discolor in time.

Remove the glazing points from the rabbets, the grooves in the sash where the glass is. If they're hard to chisel, use a hand tool like a heat gun over them to soften first. When using a heat tool, be sure to avoid damaging the sash and its railings.

After the old glaze points and putty have been removed, make a bed for the new pane. Roll a piece of glazing compound between your hands, shaping it to be about 1/2-inch thick. Then, push it into the rabbets, where the glass will sit. It is crucial that the glass rests against the putty in all places on both sides If you have to do so, gently tap the glass into the rabbet using your thumb.

If the new pane is cracked, you can apply the silicone caulk or glass glue made from solvents to seal the crack prior Replace window pane to pressing it into the sash. In other cases, you'll need to putty over the crack to form an impervious seal to keep water out. After the putty has dried remove the oily film off of the glass and let it dry completely before painting. Paint before the putty is completely dry. It won't create a solid seal and may leak or discolor with time.

Paint

You might be worried about replacing a broken piece of glass. However, replacing one glass pane does not require a huge amount of money If you can do it yourself. Even a double-paned window can be replaced at a fraction of the cost it would cost for a professional.

If you are working on a large-sized window, make sure that it is securely attached to the frame. By using the correct tools and techniques to accomplish this task fairly easily and fast.

Once you're ready to begin with the removal of the old window by prying out the glazing points made of metal that are attached to it. They are basically tiny metal triangles which function as "nails" which hold the window in place within the frame of wood. They are submerged beneath a bead or glazing glue which hardens into a solid wedge which holds the wood frame firmly in position and hides the sharp edges.

After you have the old pane taken away Clean up the frame and wood. Scrape away any old paint and sand down the rabbet grooves where the glazing points were. Sand them down to bare wooden surfaces, allowing you to paint the frames with the same color. After sanding the wood then apply a layer of flax oil. This will help to extend its life.

The next step is to determine the size of the window's opening. It is necessary to take vertical and horizontal measurements of the entire opening and also the thickness of the old pane. To determine the exact size of the new pane subtract 1/8 inch from both measurements. This will also allow for expansion and contraction of the glass during seasons of changes. Take these measurements to your local hardware or home improvement store and have the glass cut for you.

Now, it's time to bed the new window pane. To do this, place the pane inside the frame and move it around until a 1/16 inch of putty remains between the edge of the glass and the sash on all four sides. Use a putty knife to smear the putty evenly, making sure that there isn't an excessive amount of excess putty in the corners and along the edges. When the putty dries, it can be painted with the same color as the frame to prevent water and air from leaking into the frame and causing fogging.