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How to Replace Window Panes

A damaged window pane can be a nuisance. It could also be a chance to upgrade your glass to energy-efficient or insulated windows and reap benefits like more comfort, higher potential for resales, and less bills.

It's a project you can do yourself for less than the cost of hiring a professional. It requires the right equipment and an hour or two of your time.

Glass

If your single-pane Windows Glass replacement are old damaged, cracked or deteriorating replacing them with more modern glass that is tempered or insulated will increase energy efficiency and reduce noise while maintaining the original character of older homes. A majority of homeowners with hand tools can replace the window pane. In addition to a new pane, the following components are needed: latex glazing putty; pliers, glazier's points and the use of a heat gun to warm the old putty, if necessary. Wear safety glasses and gloves prior to starting. Working with broken glass could result in serious injuries.

Remove any broken glass pieces remaining. It is best to use pliers however a flathead could be used equally. Then, use a wood chisel or putty knife remove the remaining old putty from around the frame and sash. Be careful not to scratch the window sash. Work slowly and carefully. It is recommended to work on a stable ladder instead of the ground, and to have someone standing below the sash to help keep it in place.

Once you have removed all of the old putty, it is time to prepare the window frame for the new pane. To allow for seasonal expansion or contraction, subtract 1/8 inch each from the measurements of the width and height. Take these measurements to an hardware store or home center, and have a piece of stock glass cut to size. You can cut the glass yourself if you have the appropriate tools.

After putting the new pane in place After installing the new pane, apply a small amount of caulking around the edge to make it weatherproof. Install a glazier's pointing on both sides of the frame. This will secure the pane. The points should not be tight enough to cause friction between the frame and the sash However, they should not be loose.

Before putting the putty on, make sure to knead it until it is soft and free of lumps. Cut it into pencil-sized pieces. The first strip should be placed in the corner of the frame, working from one corner to the other so that it is even and smooth.

Glazier's Points

The glazier's points are tiny triangular pieces of steel which help to secure the glass into the window replacement near me frame without causing any damage to the fragile surface. Learning how to use these tiny pieces of help is simple and can save you money on professional installation or the cost of buying new glass.

After taking off the old putty, glazier points, and any other remnants Clean the frame thoroughly with an utility knife. If needed you can lightly sand the wood in the grooves of the rabbets to smooth out rough areas. If you decide to sand the wood, ensure you protect it with painter's tack to avoid accidental damage.

Take measurements of the empty frame and record precise measurements. Take these measurements to an hardware store or home center and have the new pane cut slightly smaller than the frame's opening. This will ensure that the pane fits snugly and allows for expansion and contraction.

Place the new window in the frame and push it into place firmly with your hand. Utilize the chisel's point, or the back of the putty knife to tap in the glazier's points as illustrated in Figure 11. The glazier's points should sit flush against the top edge of the pane and the shoulders should be just below that lip.

Apply a thin layer of glazing compound to the rabbet grooves and edges of the new glass. This will protect and seal the edges. Allow it to dry and cure completely.

Once the glazing compound has dried it's time to put in the new window sash. First, coat the wood with a thick coat of linseed oil. This will prevent the new putty drying out or cracking as it absorbs moisture. Use a brush to apply this coat, or even the tip of the blade. Then, use the chisel on the back of the tool or the back of the handle to gently hit the new sash, or glazier's tip into the rabbet grooves. Repeat this process every 10 inches around the perimeter of the frame.

Putty

A baseball that is thrown or an unintentional rock, or a falling branch can cause a window to crack or break. Fortunately, windows can be repaired by simply putting a brand new piece of glass in its place. The glass is held into the position with a tiny metal clip, called the glazier's point, and putty. This compound is also referred to as glazing compound. Before installing a replacement of window glass pane, first get rid of the old one and clean up the area using a rag and a pull-type paint scraper or an abrasive wood chisel. Wear safety glasses and gloves when working. You'll require a heat gun if the window is glued to the frame.

If you plan to reinstall the original sash, remove any pieces of molding that are used to secure the old pane. Then, sand the sash to make sure it's flat and ready for new caulk. Once the sash is installed, apply a new silicone caulk to the glass to ensure that it will not leak or change color over time.

Remove the glazing points from the rabbets and the grooves in the sash where the glass is. If they're difficult to cut out, try holding an instrument like a heat gun over them to soften them first. When using a heat tool, be sure to avoid damaging the sash or its railings.

After the old glaze points and putty are removed, prepare a bed for the new pane. Roll a rope with glazing compound between your fingers, and then make it about 1/2 inch thick. Then, push it into the rabbets, where the glass will be. It is crucial that the glass sits on the putty in all places on each side So if you have to tap it, gently press the glass into the rabbet using your thumb.

If the new pane is cracked, you can apply a silicone caulk or a glass glue based on solvents to fill in the crack prior to pressing it in the sash. If the crack isn't sealed, you'll need to use putty to keep water out. After the putty has dried, clean the oily film off the glass using a rag and allow it to completely dry before painting. If you paint before the putty has completely dry, it will not form an effective seal and could be leaking or discoloring over time.

Paint

If you've suffered a break in a window pane, then you may be worried about the cost of replacing it. But the truth is that replacing a single glass pane doesn't need to cost a fortune If you can do it yourself. Even a double-paned window could be replaced at a fraction of the cost it costs an expert.

First, if you are working on a large window, ensure that it is securely attached to the frame. This task can be made relatively simple and fast using the proper tools and techniques.

When you are ready to start, remove the old window pane. Pry out the glazing points made of metal that are attached to it. These are tiny metal triangles which act as "nails", holding the window in the frame. They are buried under a bead of glazing putty, which transforms into a solid molded wedge that holds the window firmly in place and conceals the window handles replacement's points.

After you have removed the old pane removed clean the surrounding frame and wood. Scrape away any paint and sand down the rabbet grooves where the glazing points used to be. These should be sanded down to the point of being bare, so that you can paint them the same color as the rest the frame. After sanding, apply a coat of flax oil on the wood's surface to extend the life of the frame.

Then, you need to measure 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 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 during seasons of changes. Take these dimensions to a hardware or home improvement store and 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.