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How to Replace Window Panes

A damaged window pane can be a nuisance. It could also be a chance to upgrade your glass to energy-efficient or insulated windows to reap benefits like more comfort, higher potential for resales, and less bills.

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

Glass

Replace your single-paned windows using tempered or insulated glass to increase energy efficiency, reduce noise, and maintain the original character of your home's older. The replacement of windows is easy and can be accomplished by homeowners with basic hand tools. Alongside a replacement pane, the following items are needed for the replacement process: latex glazing putty glazier's points; pliers; and an electric heater to warm the old putty, if needed. Before starting, put on gloves and safety glasses as working with broken glass could cause injuries.

Take out any broken glass pieces that remain. This is best done using the help of pliers however, flathead screwdrivers can be effective in the pinch. Use a wood chisel, or putty knives to remove any remaining old putty around the frame and the window sash. Be careful and slow and be careful not to break the existing window sash. It is recommended to work on a stable ladder rather than the ground and have someone standing below the sash to help hold it steady.

Make sure the window frame is ready to accommodate the new pane when you have removed the old putty. Measure the width and height of the opening for the sash, subtracting 1/8 inch from each measurement (to allow for seasonal expansion and contraction). These measurements can be sent to an hardware or home centers store to have cut a piece of stock glass to the right size. You can also cut the glass yourself if have the appropriate tools.

After putting in the new glass, apply a small amount of caulking on the edges. This will make the glass weatherproof. Then, place a glazier's tip on each side of the frame to hold the pane in place. The points should not be so tight that they cause friction between the sash and frame, but they also shouldn't be loose.

Before applying the putty make sure to knead it until it's soft and free of lumps. Roll it into pencil-sized strips. The first strip should be glued to the frame's corner. Work from one corner to the next to ensure it's even and smooth.

Glazier's Points

The glazier's facets are small triangular pieces that allow glass to be secured into frames for windows without scratching or damaging the fragile surface. Learning how to use these hidden little helpers is easy and could save you money on a professional installation or the cost of buying new glass.

After removing the old putty, glazier points, and any other residue, clean the frame thoroughly using an utility knife. If needed you can lightly sand the wood along grooves of the rabbet to smooth out rough areas. If you do sand the wood, ensure you protect it by using painter's tape to prevent accidental damage.

Measure the empty frame's dimensions and write down accurate measurements. Take these measurements to a hardware store or home center and have the new pane cut smaller than the frame's opening. This will ensure a secure fit and will allow room for expansion and contraction.

Place the new pane in the frame and push it into the frame by using your hands. Make use of the point of the chisel, or the back of the putty blade to tap in the glazier's points as shown in Figure 11. The glazier's point should be aligned with the top edge of your pane and the raised shoulders should be just below the lip.

Apply a thin bead of glazing compound over the edges of the new glass and in the rabbet grooves, to seal and protect them. Allow it to dry completely and cure.

After the glazing compound dries it's time to put in the new window sash. First, saturate the wood with a heavy coat of linseed oil. This will stop the new putty from taking up the moisture and drying out and cracking with time. Apply the coat using a brush or the tip of your putty knife, and then use the chisel, or the back end from the putty knife to gently press the new sash and glazier's point into the grooves of the rabbet. Repeat this procedure every 10 inches along the frame's perimeter.

Putty

A baseball thrown or a rock thrown by error, or a tree falling can cause a broken or cracked window pane. The majority of Windows glass Replacement near me can be repaired easily by putting in a new piece. The glass is held in place with small clips made of metal called a glazier's point and putty, often called glazing compound. Before installing a new pane, first remove the old one and clean up the area using a rag and an abrasive scraper that is a pull type or a wood chisel. Wear protective glasses and gloves while doing this work. You'll need a heat gun when the window is fixed to the frame.

If you're planning to install the original sash in the future, take care to remove the molding pieces that are used to secure the old pane. Then you can sand the sash down to ensure it's level and ready for a new caulk. After the sash has been installed, you can apply a silicone caulk to the glass. This will ensure that it won't be leaking or fade over time.

Remove the glazing points from the rabbets, or the grooves in the sash that the glass sits. If they're difficult to work out, you can try holding a hand tool like a heat gun over them to soften them before you do. When using a heating tool, be sure to not scratch the sash and its railings.

Once the old glaze points and putty have been removed, prepare a bed for the new pane. Roll a rope of glazing compound between your fingers, and then make it about 1/2 inch thick. Then, you can press it into the rabbets where the glass will rest. It is essential that the glass rests against the putty in all places on each side So if you have to, lightly tap the glass into the rabbet using your thumb.

If the new pane has damaged, you can use a silicone caulk or glass glue made from solvents to cover the crack before pressing it in the sash. Otherwise, you'll need to apply putty over the crack to form an airtight seal and keep water out. Once the putty is dry remove the oily film off of the glass and allow it to dry completely before painting. Paint after the putty is completely dry. It won't make a strong seal and could leak or discolor with time.

Paint

You may be concerned about replacing a broken piece of glass. However, replacing a single glass pane doesn't need to cost a fortune if you do it yourself. Even a double-paned window can be replaced for a fraction of the price it will cost a professional.

First, if you're working on a large-sized window, make sure that it is securely fixed to the frame. By using the correct tools and techniques, you can accomplish this task fairly easily and speedy.

When you are ready to start with the removal of the window pane. Remove the metal glazing points that are attached to it. These are small metal triangles which act as "nails" that hold the window in place. They are placed beneath a layer of glazing putty that hardens into a solid, formed wedge that holds the window pane replacement firmly in place and conceals the edges.

Once you have the old pane taken away, clean up the surrounding frame and wood. Scrape off any paint and sand down the rabbet grooves where the glazing points were. These should be sanded down to bare wood so that you can paint them the same color as the rest of the frame. After the sanding process, apply a coat of flax oil to the wood's surface to prolong its life.

The next step is to measure the dimensions of the window's opening. It is necessary to measure 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 during seasonal change. Take these measurements to the hardware or home improvement store and have a piece 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.