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How to Replace Window Pane Window Panes

A damaged or cracked window can be a source of frustration. This could be an opportunity to upgrade your windows to energy efficient or insulated ones, and reap benefits like increased comfort, increased resale value and reduced utility bills.

You can do it yourself at a fraction of what it would cost to employ an expert. You only need the proper tools and a few minutes of your time.

Glass

If your single-pane windows are old, deteriorating or broken replacing them with more modern glass that is tempered or insulated can increase energy efficiency and decrease noise while preserving the historic integrity of older homes. Most homeowners with basic hand tools can replace window handles the window pane. You will also require an additional window pane, glazier's suggestions, pliers, and Replace Window Pane latex glaze putty. If necessary, you can use a heating gun to warm the old putty. Wear safety glasses and gloves prior to beginning. Working with broken glass could result in serious injuries.

Begin by removing any broken pieces of glass. This can be done with a pair of pliers, though using a flathead screwdriver may be used in a pinch. Then, use a wooden chisel or putty knife to remove the rest of the old putty around the frame and sash. Be careful to not damage the window sash. Be careful and slow. This should be done on an elevated ladder, not on the ground. Also, ensure that someone on the ground to hold it steady.

Prepare the window frame to accept the new pane when you have removed the old glue. Find the width and the height of the sash opening, 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 a piece cut of stock glass to the right size. Alternately, you can cut the glass yourself, if you have the tools you need.

After putting the new pane in place after installing the new pane, put a tiny amount of caulking along the edge to seal it against weather. Install a glazier's point on both sides of the frame. This will help secure the pane. The points should not be so tight that they cause friction between the frame and sash but they should not be too loose.

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

Glazier's Points

The glazier's points are small triangular metal pieces which help to secure the glass into the window frame without causing damage to the delicate surface. It's easy to understand how to use this secret tool, and you'll be able to save money on the cost of an installation by a professional.

Once the old putty and the glazier's point are gone Clean the frame thoroughly with a knife to remove any remaining residue. Lightly sand the frame in the rabbet grooves, if necessary, to smooth out rough areas. If you do sand the wood, be sure to protect it with painter's tack to avoid accidental damage.

Note down the dimensions of the frame. These dimensions can be taken to a home center or hardware store and the new pane will be cut slightly smaller. This will ensure a tight fit, and allow for expansion and contraction.

Insert the new pane into the frame and press it down using your hands. Then, you can use the point of your chisel or back end of the putty knife to make a tap on the glazier's points, as shown in Figure 11. When you're done taping, they should be flush with the top edge of the pane, and the shoulders that are raised of the points should be below the lip of the rabbet groove.

Apply a small amount of glazing compound on the edges of the new glass and in the rabbet grooves to seal and protect them. Allow this to dry and cure fully.

Once the glazing compound has dried, you're ready to install the new window sash. First, saturate the wood with a heavy coat of linseed oil. This will keep the new putty from sucking up the moisture and drying out and cracking over time. Apply the coat using a brush or the edge of your putty knife, and then use the chisel or the back end of the putty knife to gently hammer the new sash and glazier's point into the rabbet grooves. Repeat this process at intervals of 10 inches around the frame.

Putty

A baseball hit or a rock thrown in error or a branch falling can result in a cracked or cracked window. Fortunately, the majority of windows can be easily replaced by simply putting a brand new piece of glass in its place. The glass is held in place using a small metal clip called the glazier's pointed and putty, which is often called glazing compound. Before installing a new pane, first get rid of the old one and clean up the area with an abrasive and an abrasive scraper that is a pull type or the wood chisel. Wear safety glasses and gloves while working. You'll need a heating gun in the event that the window is glued to the frame.

If you plan to reinstall the original sash in the future, take care to remove any pieces of molding that secure the old pane. Sand the sash until it's flat and ready to receive new caulk. After the sash has been put back in place it is possible to apply a silicone caulk over the glass. This will ensure that it doesn't leak over time or discolor.

Take out the glazing points in the rabbets. These are the grooves on the sash, which is where the glass is located. If they're hard to chisel out, you can try holding the hand tool, such as a heat gun over them to soften them up first. If you're using a heating gun, be cautious not to damage the sash or its railings by using the tool too close.

Prepare a bed for your new pane by removing the old glaze and putty. Roll a rope of glazing compound between your hands, and form it into a 1/2-inch thick. Then, press it into the rabbets where the glass will sit. The glass should rest against the putty on both sides. If necessary gently 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 pressing it into the sash. If not, you'll have to apply putty on the crack to form a tight seal and keep water out. Once the putty is dry remove the oily film off the glass and let it dry completely before you paint. Paint after the putty has completely dried. It won't form a good seal and may discolor or leak 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. The truth is, replacing a single pane glass doesn't have to be expensive even if you do it your own. Even double-paned windows can be replaced at a fraction of the cost it would cost a professional.

If you are working with a large glass window, first make sure it is securely attached to the frame. This job can be made relatively simple and fast with the appropriate tools and techniques.

When you are ready to start taking down the old window pane. Take out the metal glazing points that are attached to it. They are basically tiny metal triangles that act as "nails" that keep the window in within the frame of wood. They are buried under a bead of glazing putty that transforms into a solid molded wedge which holds the window in place and conceals the window's points.

After you have removed the old pane removed, clean up the surrounding frame and wood. Scrape away any paint and sand down the rabbet grooves where the glazing points used to be. Sand them to bare wood surfaces, so that you can paint the frames with the same shade. After sanding, apply a coat of flax oil to the wood's surface to extend the life of the frame.

Then, take measurements of the dimensions of the window replacements opening. You'll need to determine the horizontal and vertical dimensions of the entire opening, as well as the thickness. To get the exact size of the new pane subtract 1/8 inch from both measurements. This will also allow for expansion and contraction of the glass during seasons of changes. Bring these measurements to the hardware or home improvement store, and they will 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.