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How to Replace Window Pane Window Panes

A damaged window pane can be an issue. This could be an opportunity to upgrade your windows to energy efficient or insulated ones to enjoy advantages like improved comfort, increased resale values and lower utility costs.

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

Glass

If your single-pane windows are outdated broken, deteriorating or damaged replacing them with modern glass that is tempered or insulated will improve energy efficiency and reduce noise while maintaining the historical integrity of older homes. The process of replacing the window pane is easy and can be completed by anyone with basic hand tools. In addition to a new pane, the following items are needed: Replace Window Pane latex glazing putty; pliers, glazier's points and a heat gun for warming the old putty, if necessary. Before beginning, wear gloves and safety goggles as working with broken glass can cause injuries.

Begin by removing any broken pieces of glass. This is best done using a pair of pliers, but flathead screwdrivers can work in a pinch. Then, use a wooden chisel or putty knife to take the remainder of the old putty around the frame and the sash. Be careful not to damage the window sash. Be careful and slow. This is best done on an elevated ladder, not on the ground. Also, have someone on the ground to ensure it is held steady.

Once you have removed all 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 width and Replace Window Pane height. These measurements can be taken to an hardware or home centers store to get cut a piece of stock glass to the right size. You can also cut the glass yourself if have the right tools.

After putting in the new pane, run a small bead of caulking around the edges to seal it against weather. Then install a glazier's point on the frame's opposite side to secure the pane in its place. The points shouldn't be so tight that they create friction between the sash and the frame but they shouldn't be too loose.

Before applying the putty on the surface, knead thoroughly until it becomes soft and free from lumps. Roll it into pencil-sized strips. The first strip should be glued to the corner of the frame. Work from one corner to another, making sure it is even and smooth.

Glazier's Points

The glazier’s points are small triangular pieces of metal that allow glass to be secured into the window frame without damaging the delicate surface. It's easy to learn how to use this hidden tool, and you'll be able to save money on the cost of an installation by a professional.

After the old putty and the glazier's point are gone, thoroughly clean the frame using a utility knife to get rid of any remaining traces. If necessary you can lightly sand the wood in the grooves of the rabbets to smooth rough spots. If you do sand the wood, be sure to protect it with painter's tape to avoid accidental damage.

Take measurements of the empty frame and write down accurate measurements. These dimensions can be taken to an hardware or home centers store and the new pane will be cut to a smaller size. This will ensure a tight fit and will allow room for expansion and contraction.

Insert the new pane into the frame and press it down with your hands. Utilize the chisel's point, or the back of the putty knife to tap the glazier's points, as shown in Figure 11. The glazier's points should be aligned with the top edge of the pane and the raised shoulders should be just beneath that 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. Allow this to dry and cure fully.

Install the new window sash once the glazing compound has dried. First, coat the wood with a heavy coat of Linseed oil. This will keep the new putty from taking in the moisture and drying out and cracking over time. Apply the coat using a brush or the tip of your knife, then use the chisel or the back end of the knife to gently hammer the new sash and glazier's points into the grooves of the rabbet. Repeat this procedure every 10 inches along the perimeter of the frame.

Putty

A baseball thrown at you or an unintentional rock, or falling branch could cause a window pane to break or crack. The majority of 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. Remove the old pane and clean the area with the rag, a scraper that is a pull type or a wood chisel. Wear protective glasses and gloves while working. If the window is glued to the frame, you'll need to use a heat gun to soften the adhesive before cutting it loose.

If you are planning to replace window handle the original sash in the future, take care to remove any molding pieces that are used to secure the old pane. Then, sand the sash to ensure it's level and ready for new caulk. Once the sash is installed, apply a new silicone caulk to the glass to ensure it won't leak or discolor in time.

Remove the glazing points from the rabbets and the grooves in the sash that the glass sits. If they're difficult to cut, place an instrument such as a heating gun over them to soften first. When using a heat tool, make sure to not damage the sash and its railings.

Prepare the bed for your new pane after removing the old glaze points and putty. Roll a rope of glazing compound between your hands, shaping it to be around 1/2-inch thick. Then, you can press it into the rabbets, where the glass will sit. The glass must rest against the putty on both sides. If necessary, lightly tap your glass into the rabbet using your thumb.

If the new pane is cracked, you can apply a silicone caulk or glass glue based on solvents to fill in the crack before 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 of the glass and allow it to dry completely before you paint. Paint after the putty has dried completely. It will not make a strong seal and could leak or discolor with time.

Paint

You may be concerned about replacing a broken piece of glass. But the truth is that replacing a single glass pane doesn't need to cost a fortune when you do it yourself. In fact, even a double-pane window can be replaced for less than the cost of a professional.

If you're working with a large glass window first ensure it is securely fixed to the frame. By using the correct tools and techniques you can accomplish this task fairly easily and speedy.

Once you're ready to begin, begin by removing the old replacement upvc window handles pane by prying out the metal glazing points that are connected to it. These are basically small metal triangles that act as "nails" which hold the window in within the frame of wood. They are placed beneath a layer of glazing putty, which transforms into a solid molded wedge which holds the window in place and hides the points.

After removing the old pane, clean the frame and the wood. Scrape away any old paint and sand down the rabbet grooves where the glazing points used to be. They should be sanded to bare wood to allow you to paint them the same color as the rest of the frame. After sanding, apply a coat of flax oil to the wood that is not sanded down to help extend its lifespan.

Next, measure the dimensions of the window's opening. You'll need to take horizontal and vertical measurements of the entire opening, and also the thickness of the old pane. Subtract 1/8 inch from each measurement to ensure you get a precise size for the new pane. This will allow for seasonal changes in the glass. You can take these measurements to a hardware 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.