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How to Replace Window Panes

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

You can do it yourself for a less than what it would cost to employ an expert. You'll need only the proper tools and a few hours of your time.

Glass

If your single-pane windows are old, deteriorating or broken, replacing them with newer glass that is tempered or insulated will increase energy efficiency and reduce noise while maintaining the original character of older homes. The replacement of the window pane is easy and can be accomplished by anyone with basic hand tools. You'll also require an extra window pane, glazier's tips pliers, and latex glaze putty. If necessary, you can make use of a heat gun to warm the old putty. Before starting, put on protective gloves and goggles since working with broken glass may cause injuries.

Begin by removing any broken pieces of glass. This is best done using pliers, however, a flathead screwdriver can also be used in the pinch. Utilize a wood chisel or putty knives to remove any old putty that remains around the frame and the window sash. Take your time and work slowly making sure not to break the current window sash. It is a good idea to do this on a stable ladder rather than on the ground and place someone on the sash to help hold it in place.

Prepare the window handles replacement frame to accommodate the new pane once you have removed the old putty. To allow for seasonal expansion or contraction and contraction, subtract 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. Alternately, you can cut the glass yourself if you have the appropriate tools.

After putting the new pane in place After installing the new pane, Replacement Sash Windows apply a small amount of caulking around the edges to make it weatherproof. Then, you can install a glazier's pointing on the frame's opposite side to secure the pane into its place. The points should not be so tight that they create friction between the frame and sash but they shouldn't be too loose.

Before putting the putty on, knead it thoroughly until it is smooth and free of lumps. Then make it into pencil-sized strips. Place the first strip in the corner of the frame, working from one corner to another so that it is smooth and even.

Glazier's Points

The glazier's points are small triangular metal pieces that help secure the glass into the window frame without causing damage to the delicate surface. It's simple to learn how to use this hidden tool, and you'll save money on the expense of an installation by a professional.

Once the old putty and the glazier's point are gone, thoroughly clean the frame using a utility knife to get rid of any remaining residue. Lightly sand the frame in the rabbet grooves to smooth rough areas. If you do sand Replacement Sash Windows the wood, ensure you protect it with painter's tack to avoid accidental damage.

Write down the exact dimensions of the frame. Take these dimensions to a hardware store or a home center and request that the new pane made slightly smaller than the frame's opening. This will ensure that the pane fits comfortably and allows for expansion and contraction.

Place the new pane in the frame and press it in place using your hand. Use the point of the chisel, or the edge of the putty blade to tap in the glazier's points as illustrated in Figure 11. After you're done, the points should be level with the top edge of the pane and the raised shoulders of the points should be below the rabbet's lip. 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 it to dry and cure completely.

Install the new window sash after the glazing compound has dried. The first step is to coat the wood with a thick layer of linseed. This will stop the new putty from soaking up moisture and drying out and cracking with time. Use a brush to apply this coat, or the point of the blade. Then, use the chisel on the back of the putty tool or the back of the putty handle to gently smash the new sash or glazier's point 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 tree falling could result in a broken or cracked window. Most windows can be replaced easily by installing a new piece. The glass is held in position by a small metal clip, also known as a glazier's point and putty. This compound is also known as glazing compound. Before installing a Replacement Sash Windows pane, first take out the old one and clean the area using an abrasive and an abrasive scraper that is a pull type or a wood chisel. Wear gloves and safety glasses while doing this work. You'll need a heating gun in the event that the window is glued into the frame.

If you plan to reinstall the original sash, gently remove the molding pieces that secure the old pane. Then you can sand the sash down to make sure it's flat and ready for a new caulk. Once the sash is reinstalled then, you can apply a silicone caulk on the glass. This will ensure that it doesn't get soiled or discolor over time.

Remove the glazing points from the rabbets, the grooves in the sash, where the glass sits. If they're difficult to work out, try holding a hand tool like a heat gun to soften them first. When using a heated tool, be careful to not scratch the sash and its railings.

Once the old glaze points and putty have been removed, make a bed for the new pane. Roll a rope made of glazing compound between your fingers, and make it about 1/2 inch thick. Then, press it into the rabbets in which the glass will rest. 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 has a crack then you can seal it with a solvent-based glass glue or silicone caulk before pressing it into the sash. Otherwise, you'll need to putty over the crack to create an impervious seal to keep water out. After the putty has dried then clean the oily film off the glass with an abrasive and allow it to dry completely before painting. If you paint before the putty has completely dry, it won't form an effective seal and could 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 replacing it. However, replacing one glass pane does not need to cost a fortune if you do it yourself. In fact even windows with double glazed windows replacement panes can be replaced at a fraction of the cost of an expert.

First, if you're working on a large-sized window, make sure it is securely fastened to the frame. By using the correct tools and techniques to complete this task easily and quick.

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 basically small metal triangles that function as "nails" that hold the window in in the wood frame. They are buried beneath a layer of glazing putty, which is then cured to form a solid, molded wedge that holds the window firmly in place and conceals the edges.

After you have the old pane taken away, clean up the surrounding frame and wood. Scrape away any old paint and sand down the rabbet grooves, where the glazing points were. Sand them to bare wooden surfaces, allowing you to paint the frames with the same color. After sanding, apply a layer of flax oil to the bare wood to help extend its lifespan.

Next, measure the width of the window opening. It is necessary to take vertical and horizontal measurements of the entire opening as well as the thickness of the old pane. To determine 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 in times of seasonal changes. Bring these measurements to your local hardware or home improvement store, and they will 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.