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How to Replace Window Panes

A damaged window pane could be a nuisance. It could be a chance to upgrade your windows to energy efficient or insulated ones and enjoy benefits like increased comfort, increased resale values and reduced utility bills.

This is a project you could do yourself for only a fraction of the cost of hiring a professional. It requires the right tools 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If your single-pane windows are outdated damaged, cracked or deteriorating replacing them with modern glass that is tempered or insulated can increase energy efficiency and reduce noise while preserving the original character of older homes. The replacement of the window pane is simple and can be done by homeowners with basic hand tools. You will also need a replacement window pane, glazier's tips, pliers, and latex glazing putty. If you need to you may use a heatgun to warm the old putty. Wear safety goggles and gloves before you begin. Working with broken glass could result in serious injuries.

Begin by removing any remaining broken pieces of glass. This is best done using the help of pliers though using a flathead screwdriver may be effective in the pinch. Then, use a wooden chisel or putty knife to remove the remaining old putty around the frame and Glass replacement Windows the sash. Take your time and work slowly making sure not to break the existing window sash. This should be done on a ladder, glass Replacement Windows not on the ground. Also, have someone lower to keep it in place.

Prepare the window frame to accept the new pane after you have removed the old glue. To allow for seasonal expansion or contraction by subtracting 1/8 inch from the measurements of the width and height. Take these measurements to the nearest hardware store or home center and have a piece of stock glass cut to size. You can also cut the glass yourself if you have the right tools.

After putting in the new glass Apply a small amount of caulking around the edge. 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 create friction between the frame and the sash, but they should also not be loose.

Before applying the putty on the surface, knead thoroughly until it is smooth and free from lumps. Make it into pencil-sized strips. Apply the first strip to the frame's corner. Work from one corner to the next, making sure it is even and smooth.

Glazier's Points

The glazier's points are small triangular pieces of steel that allow glass to be secured to the frame without causing damage to the delicate surface. Knowing how to use these hidden little helpers is easy and can save you money on professional installation or the cost of buying new glass.

Once the old putty and the glazier's points have been removed Clean the frame thoroughly using a utility knife to remove any remaining traces. If needed it is necessary to lightly sand the wood along grooves of the rabbet to smooth out rough spots. If you decide to sand wood, cover it with painter's tape to avoid accidental damage.

Note down the exact dimensions of the frame. These measurements can be brought to the hardware or home center store and the new pane will be cut slightly smaller. This will ensure that the pane fits comfortably and allows for expansion and contraction.

Insert the new pane into the frame and press it down with your hands. Utilize the point of the chisel, or the back of the putty blade to tap the glazier's points, as illustrated in Figure 11. When you're done, they should be flush with the top edge of the pane. the raised shoulders of the points should be below the rabbet's lip. groove.

Apply a thin bead of glazing compound on the edges of the glass that has been made and into the rabbet grooves to seal and protect them. Allow it to dry and cure completely.

Install the new window replacement panes sash once the glazing compound has dried. First, coat the wood with a heavy coat of Linseed oil. This will stop the new putty from drying out or cracking when it absorbs moisture. Apply this coat using a brush or the tip of your knife, and then use the chisel, or the back end of the knife to gently hammer in the new sash and glazier's tips into the rabbet grooves. Repeat this process in intervals of 10 inches all around the frame.

Putty

A baseball hit or a rock thrown by error, or a fallen tree can result in a cracked or cracked window pane. Fortunately, the majority of windows can be easily replaced by simply putting a new piece of glass in its the proper place. The glass is held in place by a small metal clip called a glazier's point and putty, also called glazing compound. Remove the old pane and clean the area with a rag, a pull-type scraper, or a wood chisel. Wear gloves and safety glasses while working. You'll require a heat gun in the event that the window is glued into the frame.

If you are planning to replace the original sash, gently remove the molding pieces that secure the old pane. Then you can sand the sash down to ensure it's level and ready for new caulk. Once the sash is installed, apply a new caulk made of silicone around the glass to ensure it doesn't swell or fade over time.

Take out the glazing points in the rabbets. These are the grooves on the sash, where the glass is located. If they are hard to chisel, use an instrument such as a heatgun over them for a few minutes to soften them. If you're using a heat gun, be careful not to cause damage to the railings of the sash or the sash itself by placing the tool too closely.

Once the old glaze points and putty are 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, you can press it into the rabbets in which the glass will rest. It is crucial that the glass rests against the putty in all places on both sides If you have to tap it, gently press the glass into the rabbet using your thumb.

If the new pane has a crack then you can seal it with a solvent-based glass glue or silicone caulk prior pressing it into the sash. If the crack isn't sealed, you'll need to use putty to keep the water out. After the putty has dried, wipe the oily film off of the glass and let it dry completely before painting. Paint after the putty has dried completely. It won't create a solid seal and could leak or discolor with time.

Paint

You may be concerned about replacing a broken pane of glass. The truth is, replacing a single piece of glass doesn't need to be costly when you do it on your own. Even double-paned windows can be replaced for a fraction of the price it will cost an expert.

If you are working on a large-sized window, make sure that it is securely attached to the frame. This job can be done relatively easy and fast with the right tools and techniques.

When you are ready to begin taking down the old window pane. Pry out the glazing points made of metal that are attached to it. These are tiny triangles of metal that act as "nails" to hold the window in place. They are submerged beneath a bead or glazing glue that sets to form a solid wedge that holds the frame in place and hides the points.

After removal of the old pane clean the frame and wood. Scrape off any old paint, and sand the rabbet grooves where the glazing points were placed. These should be sanded to bare wood so that you can paint them the same shade as the rest of the frame. After sanding the wood, apply a layer of flax oil. This will help extend its life.

The next step is to measure the dimensions 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 allow for seasonal changes in the glass. You can bring these measurements to a hardware or home improvement store and have the Glass replacement Windows 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.