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How to replace Window Pane Window Panes

A damaged window pane could cause a lot of trouble. It could be a chance to upgrade your windows to energy efficient or insulated ones, and reap benefits like increased comfort, increased resale value and lower utility costs.

You can do it yourself for a fraction of what it would cost to employ an expert. It requires the right tools and only an hour or two of your time.

Glass

Replace your old single-paned windows with tempered insulated glass to increase energy efficiency, cut down on noise, and preserve the historical integrity of your home's older. The majority of homeowners with basic hand tools can replace a window pane. You will also need a replacement window pane, glazier's suggestions, pliers, and latex glaze putty. If needed you can use a heating gun to warm the old putty. Before starting, wear gloves and safety goggles as working with broken glass could cause injuries.

Take away any broken glass pieces that remain. It is best to use pliers for this however a flathead could work equally. Make use of a wood chisel or putty knife to get rid of any old putty that remains around the frame and the window sash. Work slowly and carefully making sure not to break the existing window sash. This is best done on a ladder, not the ground. Also, you should have someone lower to hold it steady.

Make sure that the window frame is ready to accommodate the new pane after you have removed the old glue. To allow for seasonal expansion or contraction and contraction, subtract 1/8 inch from the measurements of the width and height. Bring these measurements to a hardware store or home center and get a piece of stock glass cut to size. Alternately, you can cut the glass yourself, if you have the appropriate tools.

After installing the new glass After installing the glass, apply a small amount of caulking on the edges. This will make the glass weatherproof. Install a glazier's point on both sides of the frame. This will help secure the pane. The points shouldn't be too tight that they cause friction between the sash and the frame, but they also shouldn't be too loose.

Before applying the putty knead it thoroughly until it is smooth and free of lumps. 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 and ensure that it is even and smooth.

Glazier's Points

The glazier's facets are small triangular pieces which help to secure glass into the frame of a window without scratching or damaging the delicate surface. Knowing how to use these little helpers is easy and can save you money on professional installation or the cost of buying new glass.

After removing the old putty, glazier points as well as any remaining remnants Clean the frame thoroughly with an utility knife. If needed it is necessary to lightly sand the wood along the grooves of the rabbets to smooth rough areas. If you do sand the wood, be sure to protect it with painter's tape to avoid accidental damage.

Measure the empty frame's dimensions and note down precise measurements. These measurements can be brought to an hardware or home centers store, and the new frame will be cut slightly smaller. This will ensure that the pane fits perfectly and allows for expansion and contraction.

Place the new pane into the frame and push it in with your hands. Utilize the chisel's point or the edge of the putty blade to smudge the glaziers' points as illustrated in Figure 11. The glazier's points should sit in line with the top edge of your pane and the shoulders should be just below the lip.

Apply a thin layer of glazing compound over the edges of the new glass and into the rabbet grooves to seal and protect them. Let it dry and cure completely.

Once the glazing compound has dried it's time to put in the new window sash. First, saturate the wood with a heavy coat of linseed oil. This will prevent the newly-created putty from drying out and cracking when it absorbs moisture. Apply this coat with a brush or the tip of your knife, then use the chisel, or the back end from the putty knife to gently press the new sash and glazier's point into the rabbet grooves. Repeat this procedure every 10 inches around the frame's perimeter.

Putty

A baseball hit or a rock thrown in error, or a fallen tree can cause a broken or cracked window pane. Fortunately, the majority of windows can be replaced by simply putting a brand new piece in the right place. The glass is held into the position with a tiny metal clip, also known as the glazier's point, and putty. This compound is also referred to as glazing compound. Remove the old pane and clean the area with a rag, a pull-type scraper, or a wood chisel. Wear protective glasses and gloves when working. If the window is glued to the frame, you'll need to use a heat gun to soften the adhesive before taking it off.

If you are planning to reinstall the original sash, take off the molding that holds the old pane. Then sand the sash to ensure it's smooth and ready for a new caulk. Once the sash is re-installed and sanded, apply a fresh silicone caulk around the glass to ensure that it doesn't swell or fade as time passes.

Remove the glazing points from the rabbets, the grooves in the sash that the glass sits. If they're difficult to work out, try holding a hand tool like a heat gun over them to soften them up first. If you're using a heat gun, be careful not to cause damage to the railings or sash by holding the tool too close.

Create the bed for your new pane by removing the old glaze points and putty. Roll a rope of glazing compound between your hands, shaping it to be around 1/2-inch thick. Then, push it into the rabbets in which the glass will be. The glass must rest against the putty on both sides. If necessary gently tap your glass into the rabbet using your thumb.

If the new pane has a crack, you can cover it with a solvent-based glass glue or silicone caulk before pressing it into the sash. If the crack isn't sealed, you'll require putty to keep water from getting in. When the putty dries, clean the oily film off the glass using an abrasive and replace window pane allow it to dry completely prior to painting. Paint after the putty is completely dry. It won't make a strong seal and could be leaking or discoloring over time.

Paint

If you've experienced a broken window pane, then you may be worried about the cost of a new one. But the truth is that replacing one glass pane does not have to break the bank if you do it yourself. Even a double-paned window can be replaced at a fraction of the cost it would cost a professional.

If you are working with large glass windows first ensure it is securely attached to the frame. With the right tools and techniques, you can accomplish this task fairly easily and quick.

When you are ready to start, remove the old window pane. Pry out the metal glazing points that are attached to it. These are small metal triangles that function as "nails", holding the window in the frame. They are buried beneath a bead or glazing putty which hardens into an unbreakable wedge which holds the wood frame firmly in position and hides the points.

After you have the old pane taken away, clean up the surrounding frame and wood. Scrape off any old paint and sand down the rabbet grooves that the glazing points were placed. Sand them down to clean wood surfaces, so that you can paint the frames the same shade. After the sanding process, apply a coat of flax oil on the wood's surface to help extend its lifespan.

Then, you need to measure the width of the window's opening. You'll need to determine the horizontal and vertical dimensions of the entire opening, as well as the thickness. To determine the exact dimensions of the new pane, subtract 1/8 inch from both measurements. This will also allow for expansion and contraction of the glass in times of seasonal changes. Take these measurements to a hardware or home improvement store, and they will have the glass cut for you.

Now, it's time to bed the new window seal replacement 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.