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How to Replace Window Panes

A damaged or cracked window can be a source of frustration. It can also be a chance to upgrade your glass to energy efficient or insulated windows to enjoy benefits such as improved comfort, increased resale value and reduced utility costs.

You can do it yourself at a fraction of 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 old damaged, cracked or deteriorating replacing them with modern insulated or tempered glass can increase energy efficiency and reduce noise while maintaining the original character of older homes. The replacement windows cost of windows is easy and can be completed by anyone with basic hand tools. In addition to a new pane, the following tools are required for the replacement process: latex glazing putty Glazier's points; pliers and the use of a heat gun to warm the old putty, if needed. Before starting, put on gloves and safety goggles as working with broken glass can cause injuries.

Take out any broken glass pieces remaining. It is recommended 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 remaining old putty around the frame and the window sash. Take your time and work slowly, taking care not to break the existing window sash. It is best to work on a sturdy ladder instead of the ground, and to place someone on 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 putty. Take measurements of the width and height of the opening in the sash by subtracting 1/8 inch from each measurement (to allow for seasonal expansion and contraction). Bring these measurements to a hardware store or home center and have a piece of stock glass cut to size. You can also cut the glass by yourself if you possess the right tools.

After installing the new pane, run a small bead of caulking around the edge to make it weatherproof. Install a glazier's pointing on both sides of the frame. This will ensure the pane. The points shouldn't be too tight as to cause friction between the sash and frame but they shouldn't be too loose.

Before applying the putty to the surface, gently knead it until it is smooth and free from lumps. Make it into pencil-sized strips. Place the first strip in the corner of the frame, moving from one corner to the other to ensure it is even and smooth.

Glazier's Points

The glazier's points are tiny triangular pieces of metal that allow glass to be secured into the window frame without causing any damage to the fragile surface. Learning how to use these hidden tiny pieces of help is simple and could save you money on professional installation or the cost of new glass.

After taking off the old putty, glazier points as well as any remaining leftovers clean the frame thoroughly using a utility knife. If needed, lightly sand the wood in the grooves of the rabbets to smooth rough areas. If you sand wood, cover it with painter's tape to prevent accidental damage.

Take the dimensions of the frame and note down precise measurements. These measurements 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 tight fit and will allow room for expansion and contraction.

Place the new window in the frame and push it into place firmly with your hand. Then, use the tip of your chisel or the back of the putty knife to tap in the glazier's facets, as illustrated in Figure 11. The glazier's point should be flush against the top edge of your pane and the shoulders should be just beneath that lip.

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

Install the new window sash after the glazing compound has dried. The first step is to coat the wood with an even layer of linseed. This will stop the new putty from taking in the moisture and drying out and cracking with time. Apply the coating using a brush this coat, or even the tip of the putty blade. Then, use the chisel on the back of the putty tool or the back of the putty handle to gently hammer the new sash or glazier's point into grooves of the rabbet. Repeat this procedure every 10 inches around the frame's perimeter.

Putty

A baseball thrown, a rock thrown in error, or a tree falling could result in a broken or cracked window pane. The majority of windows can be repaired easily by putting in a new piece. The glass is held in place using a small metal clip called a glazier's point, and putty, also called glazing compound. Remove the old pane and clean the area with an abrasive, pull-type scraper, or a wood chisel. Wear protective glasses and gloves while working. If the Window Replacement Glass Near Me is attached to the frame, you'll need use a heat gun to soften the adhesive before cutting it loose.

If you're planning to install the original sash, remove any pieces of molding that secure the old pane. Sand the sash until it's flat and ready for new caulk. After the sash has been re-installed and sanded, apply a fresh caulk made of silicone around the glass to ensure that it doesn't swell or fade as time passes.

Take the glazing points out of the rabbets, the grooves in the sash where the glass is. If they're difficult to cut, place the hand tool, like a heat gun over them for a few minutes to soften them. When using a heating tool, be careful to avoid damaging the sash's railings and sash.

Make the bed for your new pane by removing the old glaze points and putty. Roll a rope made of glazing compound between your fingers, and make it about 1/2 inch thick. Then, press it into the rabbets where the glass will rest. The glass must be positioned against the putty on both sides. If needed 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 prior pressing it into the sash. If not, you'll have to putty over the crack to create a tight seal and keep water out. Once the putty is dry clean the oily film off the glass and let it dry completely before painting. Paint after the putty is completely dry. It will not make a strong seal and may be leaking or discoloring over time.

Paint

If you've had a broken window pane, you might be worried about the expense of replacing it. However, replacing a single glass pane doesn't have to break the bank when you do it yourself. In fact windows with double panes can be replaced at a fraction of the cost of a professional.

If you are working with a large glass window first ensure it is securely attached to the frame. By using the correct tools and techniques you can accomplish this task fairly easily and speedy.

When you're ready to start with the removal of the old window by removing the metal glazing points that are attached to it. These are tiny metal triangles that function as "nails" to hold the window in the frame. They are buried under a bead of glazing putty that hardens into a solid, molded wedge that secures the window in place and hides the points.

After you have removed the old pane removed, clean up the surrounding frame and wood. Scrape off any paint that has been used and sand the rabbet grooves where the glazing points were placed. These should be sanded down to the point of being bare, so that you can paint them the same color as the rest the frame. After sanding the wood then apply a layer of flax oil. This will help extend its life.

Next, measure the width of the window opening. You will need to take horizontal and vertical measurements of the entire opening and also the thickness of the old pane. Subtract 1/8 inch from each measurement to ensure that you have the exact size for the new pane. This will also allow for expansion and contraction of the glass during seasonal change. Bring these measurements to the hardware or home improvement store and have cut the glass 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.