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How to Replace Window Panes

A damaged window pane can be a nuisance. It can also be a chance to upgrade your glass to energy-efficient or insulated windows to benefit from improved comfort, increased the value of resales and lower utility costs.

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

Glass

Replace Window Pane your single-paned windows using tempered or insulation glass to improve energy efficiency, cut down on noise, and preserve the historic integrity of your older home. The replacement window glass of the window pane is simple and can be done by homeowners with basic hand tools. You will also need a replacement window pane, replace window pane glazier's tips, pliers, and latex glaze putty. If necessary you can use a heating gun to warm the old putty. Before beginning, wear protective gloves and goggles since working with broken glass could cause injuries.

Begin by removing any broken pieces of glass. It is recommended to use pliers for this however, a flathead may be useful as well. After that, use a wood chisel or putty knife remove the remaining old putty from around the frame and the sash. Work slowly and carefully making sure not to break the existing window sash. It is recommended to do this on a sturdy ladder instead of the ground and to place someone on the sash to help hold it in place.

Once you've removed all the old putty, you can prepare the window frame to accommodate the new pane. To allow for seasonal expansion or contraction and contraction, subtract 1/8 inch from the measurements of width and height. These measurements can be sent to a hardware or home center store to get a piece cut of stock glass to the right size. Alternatively, you can cut the glass yourself if you have the tools you need.

After putting in the new pane, run a small bead of caulking along the edge to ensure it is weatherproof. Then, you can install a glazier's pointing on the frame's opposite side to hold the pane in the right place. The points shouldn't be too tight that they create friction between the frame and the sash, but they should also not be loose.

Before applying the putty, work it in a gentle manner until it is smooth and free of lumps. Roll it into pencil-sized strips. Apply the first strip to the frame's corner. Work from corner to corner, making sure it is even and smooth.

Glazier's Points

The glazier's points are the tiny triangular pieces of steel that allow glass to be secured into the frame of a window without scratching or damaging the delicate surface. Learning how to use these tiny pieces of help is simple and could save you money on professional installation or the cost of buying new glass.

Once the old putty and glazier's points are removed Clean the frame thoroughly with a knife to get rid of any remaining residue. If needed it is necessary to lightly sand the wood in the grooves of the rabbet to smooth out rough spots. If you do sand the wood, make sure to protect it by using painter's tape to prevent accidental damage.

Note down the exact dimensions of the frame. These dimensions can be taken to the hardware or home center store, and the new frame will be cut to a smaller size. This will ensure that the pane fits snugly and allows for expansion and contraction.

Insert the new pane into the frame and push firmly with your hands. Utilize the chisel's point, or the edge of the putty blade to tap in the glazier's points, as illustrated in Figure 11. The glazier's point should be aligned with the top edge of the pane and the shoulders raised should be just below the lip.

Apply a thin layer of glazing compound on the rabbet grooves as well as the edges of the glass. This will protect and seal the edges. Let it dry and cure completely.

After the glazing compound dries, you're ready to install the new window sash. First, coat the wood with a thick coat of linseed oil. This will stop the new putty from sucking 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 that is on the back of the putty tool or the back of the handle to gently hammer the new sash or glazier's tip into the grooves of the rabbet. 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 cause a broken or cracked window glass replacement pane. Most windows can be repaired easily by putting in a new piece. The glass is held in place by small clips made of metal called the glazier's pointed and putty, which is often called glazing compound. Remove the old pane and clean the area with an abrasive, scraper that is a pull type or a wood chisel. Wear safety glasses and gloves while doing this work. You'll need a heating gun when the window is fixed to the frame.

If you are planning to replace the original sash, remove the molding pieces that hold the old pane in place. Then you can sand the sash down to make sure it's flat and ready for a new caulk. After the sash has been installed it is possible to apply a silicone caulk on the glass. This will ensure that it doesn't leak over time or discolor.

Remove the glazing points from the rabbets, the grooves in the sash where the glass is. If they're hard to chisel, use the hand tool, such as a heatgun over them to allow them to soften before. When using a heating tool, be sure to not damage the sash or its railings.

After the old glaze points and putty are 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. Press it into the rabbets, where the glass will be placed. It is crucial that the glass rests against the putty in all places on both sides, so if you need to, lightly tap the glass into the rabbet with your thumb.

If the new pane has a crack you can fill it with a solvent-based glass glue or silicone caulk before pressing it into the sash. If not, you'll have to putty over the crack to form an airtight seal and keep water out. After the putty has dried 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 make a strong seal and may be leaking or discoloring over time.

Paint

If you've suffered a break in a window pane, you may be worried about the expense of replacing it. However, replacing a single glass pane doesn't require a huge amount of money when you do it yourself. Even a double-paned window could be replaced at a fraction of the cost it would cost for a professional.

If you are working with large glass windows first, ensure that it is securely fixed to the frame. This job is relatively easy and fast using the right tools and techniques.

When you're ready to start, begin by removing the old window pane by prying out the glazing points made of metal that are connected to it. These are tiny metal triangles that function as "nails" to hold the window in the frame. They are submerged under a bead of glazing putty, which is then cured to form a solid, formed wedge that holds the window firmly in place and hides the window's points.

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

The next step is to determine the width of the window opening. You'll need to take horizontal and vertical measurements of the entire opening as well as the thickness of the old pane. 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 in times of seasonal changes. Bring these measurements to a 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.