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How to Replace window Pane Window Panes

A cracked window pane can cause a lot of trouble. It could be a chance to upgrade your windows to energy efficient or insulated ones and enjoy benefits such as improved comfort, increased resale values and reduced utility bills.

You can do it yourself for only a fraction of the cost it would cost to hire an expert. You'll only require the proper tools and a few hours of your time.

Glass

Replace your single-paned windows with tempered or insulate glass to improve the efficiency of your energy, reduce noise, and preserve the historical integrity of your old home. The majority of homeowners with basic hand tools can replace a window pane. You'll also require a replacement window glass window pane, glazier's suggestions, pliers, and latex glaze putty. If needed you can use a heatgun to warm the old putty. Before starting, replace window pane wear protective gloves and goggles since working with broken glass could cause injuries.

Take out any broken glass pieces that remain. It is best to use pliers for this however, a flathead may be useful as well. Then, use a wooden chisel, or putty knife, to remove the rest of the old putty from around the frame and sash. Be careful to not damage the window sash. Be careful and slow. This can be done best on a ladder, not the ground. Also, you should have someone below the sash ensure it is held steady.

Once you've removed all the old putty, prepare the window frame to accommodate the new pane. Measure the width and height of the opening in the sash and subtract 1/8 inch from each measurement (to allow for seasonal expansion and contraction). Take these measurements to an hardware store or home center and find a piece glass cut to size. You can also cut the glass yourself, if you have the appropriate tools.

After installing the glass After installing the glass, apply some caulking to the edge. This will make the glass weatherproof. Install a glazier's point on both sides of the frame. This will secure the pane. The points shouldn't be so tight that they create friction between the sash and frame but they shouldn't be too loose.

Before applying the putty on the surface, knead thoroughly until it is smooth and free from lumps. Then you can roll it into pencil-sized strips. The first strip should be glued to the corner of the frame. Work from one corner to the next to ensure it's even and smooth.

Glazier's Points

The glazier's points are small triangular metal pieces that help secure the glass into the window handle replacement frame without causing any damage to the fragile surface. It's simple to learn how to use this hidden tool, and you'll save money on the expense of an expert installation.

After removing the old putty, glazier points as well as any remaining leftovers, clean the frame thoroughly using a utility knife. Lightly sand the wood into the rabbet grooves, if necessary, to smooth out rough areas. If you do sand your wood, be sure to protect it by using painter's tape to prevent accidental damage.

Take the dimensions of the frame and note down precise measurements. These measurements can be taken to an hardware or home centers store and the new pane will be cut slightly smaller. This will ensure a secure fit and will allow room for expansion and contraction.

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

Apply a thin layer of glazing compound to the rabbet grooves and edges of the new glass. This will seal and protect the edges. Allow it to dry and cure completely.

After the glazing compound dries it's time to put in the new window sash. The first step is to coat the wood with a heavy coat of Linseed oil. This will prevent the newly-created putty from drying out or cracking when it absorbs moisture. Use a brush to apply this coat, or the point of the putty blade. Then, use the chisel on the back of the putty tool or the back of the putty handle to gently hit the new sash, or glazier's tip into the grooves of the rabbet. Repeat this procedure every 10 inches along the perimeter of the frame.

Putty

A hurled baseball or a rock that is errant or falling branch could cause a window to crack or break. Most windows can be repaired easily by installing a new piece. The glass is held in place with a small metal clip called the glazier's pointed and putty, often called glazing compound. Remove the old pane and clean the area using a rag, a pull-type scraper or wood chisel. Wear safety glasses and gloves while you do this work. You'll need a heat gun if the window is glued into the frame.

If you are planning to replace the original sash, remove the molding pieces that are used to secure the old pane. Sand the sash until it's flat and ready for new caulk. Once the sash is installed, you can apply a silicone caulk to the glass. This will ensure that it won't leak over time or discolor.

Take out the glazing points in the rabbets. These are the grooves in the sash where the glass is. If they're hard to cut, place a hand tool such as a heating gun over them to soften first. If you're using a heating gun, make sure not to damage the sash or its railings by holding the tool too closely.

Make the bed for your new pane after removing the old glaze points and putty. Roll a rope with glazing compound between your fingers and make it around 1/2 inch thick. Place it into the rabbets, where the glass will be placed. The glass should rest against the putty on both sides. If necessary, lightly tap your glass into the rabbet with your thumb.

If the new pane is cracked you can fill it with a solvent-based glass glue or silicone caulk prior to pressing it into the sash. In other cases, you'll need to putty over the crack to create a tight seal and keep water out. Once the putty is dry clean the oily film off of the glass and let it dry completely before you paint. If you paint before the putty has completely dry, it won't create a solid seal and could be leaking or discoloring over time.

Paint

If you've suffered a break in a window pane, then you may be worried about the expense of a new one. It's true that replacing a single pane of glass doesn't need to be costly even if you do it your own. Even a double-paned window can be replaced at a fraction of the cost it costs a professional.

If you are working with large glass windows first ensure it is securely fixed to the frame. This task can be made relatively simple and fast using the appropriate tools and techniques.

Once you're ready to begin with the removal of the old window by removing the metal glazing points that are attached to it. They are basically tiny metal triangles that function as "nails" that keep the window in place in the wood frame. They are buried under a bead of glazing putty, which hardens into a solid, molded wedge which holds the window in place and conceals the edges.

After removing the old pane, clean the frame and the wood. Scrape off any paint and sand down the rabbet grooves, where the glazing points were. These should be sanded down to the point of being bare, to allow you to paint them the same color as the rest of the frame. After sanding the wood then apply a layer of flax oil. This will help to extend its life.

Then, take measurements of the dimensions of the window's opening. You will need to measure the horizontal and vertical dimensions of the entire opening as well as the thickness. To determine the exact size of the new pane, subtract 1/8 inch from both measurements. This will allow for seasonal changes in the glass. Bring 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.