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How to Replace Window Panes

A damaged or cracked window can be a source of frustration. It can also be an opportunity to upgrade your glass to energy-efficient or insulated windows, and enjoy benefits such as more comfort, higher the value of resales and lower utility bills.

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

Glass

Replace your old single-paned windows using tempered or insulation glass to improve energy efficiency, cut down on noise, and maintain the historical integrity of your older home. Most homeowners with basic hand tools can Replace Window Pane windows with ease. In addition to a replacement pane, the following tools are required for the replacement process: latex glazing putty Glazier's points; pliers and a heat gun for warming the old putty, if necessary. Wear safety glasses and gloves prior to beginning. Working with broken glass can cause serious injuries.

Begin by removing any remaining broken pieces of glass. This is best done using pliers, though using flathead screwdrivers can be effective in the pinch. After that, use a wood chisel or putty knife to take the remainder of the old putty from around the frame and the sash. Be careful to not damage the window sash. Be careful and slow. This can be done best on a ladder, not on the ground. Also, have someone on the ground to hold it steady.

Once you've removed all the old putty, you can prepare the window frame for the new pane. 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 a hardware store or home center, and get a piece of stock glass cut to size. Alternately, you can cut the glass yourself if have the tools you need.

After putting in the new glass After installing the glass, apply a small amount of caulking to the edge. This will make the glass weatherproof. Install a glazier's pointing on both sides of the frame. This will ensure the pane. The points should not be so tight as to cause friction between the sash and the frame, but they also shouldn't be loose.

Before putting the putty on, knead it thoroughly until it is smooth and free of lumps. Then make it into pencil-sized strips. The first strip should be placed to the corner of the frame, moving from one corner to the other to ensure it is smooth and even.

Glazier's Points

The glazier's points are the small triangular pieces of metal which help to secure glass into the frame of a window without damaging or scratching the delicate surface. It's simple to learn how to use this nefarious tool, and you'll be able to save money on the expense of a professional installation.

After taking off the old putty, glazier points as well as any remaining leftovers Clean the frame thoroughly using a utility knife. Lightly sand the wood in the rabbet grooves to smooth out rough areas. If you do sand the wood, make sure to protect it by using painter's tape to prevent accidental damage.

Write down the exact dimensions of the frame. Take these dimensions to an hardware store or home center and have the new pane cut smaller than the frame's opening. This will ensure a snug fit and leave room for expansion and contraction.

Place the new pane into the frame and press it down with your hands. Use the chisel's point, or the back of the putty blade to smudge the glaziers' points as shown in Figure 11. When you're done, they should be in line with the top edge of the pane. the raised shoulders of the points should be just below the lip of the rabbet groove.

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

Once the glazing compound has dried and the glazing compound is dry, you can install the new window sash. First, you need to coat the wood with an even layer of linseed. This will prevent the new putty from taking in the moisture and deteriorating and cracking over time. Apply this coat with a brush or the edge of your putty knife, and then use the chisel, or the back end from the putty knife to gently hammer in the new sash and glazier's points into the rabbet grooves. Repeat this process in intervals of 10 inches around the frame.

Putty

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

If you're planning to replace your original sash, you must remove the mold that holds the old pane. Then you can sand the sash down to ensure it's level and ready to be re-caulked. Once the sash is re-installed, apply a new caulk made of silicone around the glass to ensure it will not leak or change color over time.

Remove the glazing points from the rabbets, the grooves in the sash that the glass is. If they're difficult to chisel, hold the hand tool, like a heat gun over them to soften first. When using a heat tool, be sure to avoid damaging the sash and its railings.

After the old points of glazing and putty have been removed make a bed for the new pane. Roll a rope with glazing compound between your fingers and make it around 1/2 inch thick. Press it into the rabbets where the glass will be put. It's important that the glass sits on the putty in all places on both sides, so if you need to do so, gently tap the glass into the rabbet using your thumb.

If the new pane has cracked, you can use a silicone caulk or a glass glue based on solvents to cover the crack prior to pressing it in the sash. In other cases, you'll need to apply putty over the crack to form an impervious seal to keep water out. After the putty is dry and the film is oily, wipe it off the glass using a rag and allow it to dry completely before painting. Paint after the putty has dried completely. It won't create a solid seal and could discolor or Replace window Pane leak over time.

Paint

If you've suffered a break in a window pane replacement pane, then you may be worried about the expense of a new one. The truth is, replacing a single pane glass doesn't need to be expensive even if you do it your own. In fact even windows with double panes can be replaced for a fraction of the cost of an expert.

If you're working with large glass windows first, ensure that it is securely fixed to the frame. Using the proper tools and techniques you can accomplish this task fairly easily and speedy.

When you are ready to start, remove the old window pane. Remove the glazing points made of metal 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 beneath a bead or glazing putty which hardens into a solid wedge that holds the frame firmly in position and hides the sharp edges.

After removal of the old pane clean the 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 the same shade. After the sanding process, apply a coat of flax oil on the wood that is not sanded down to prolong its life.

The next step is to determine the size of the window opening. You will need to measure 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 allow for seasonal changes in the glass. You can take these measurements to a hardware store or home improvement shop and get 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.