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How to Replace Window Panes

A damaged window pane could cause a lot of trouble. It could be a chance to upgrade to energy-efficient replacement windows and doors or insulated ones to enjoy benefits like increased comfort, increased resale value and reduced utility bills.

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

Glass

If your single-pane windows are outdated damaged, cracked or deteriorating, replacing them with newer insulated or tempered glass can increase energy efficiency and reduce noise while maintaining the historic integrity of older homes. The procedure of replacing windows is easy and can be completed by homeowners with basic hand tools. Alongside a replacement window Locks pane, the following components are needed for the replacement windows prices process: latex glazing putty pliers, glazier's points and the use of a heat gun to warm the old putty, if needed. Wear safety glasses and gloves before you begin. Working with broken glass can cause serious injuries.

Begin by removing any broken pieces of glass. This can be done with a pair of pliers, though using a flathead screwdriver can also be used in a pinch. After that, use a wood chisel, or putty knife, to remove the remaining old putty from the frame and the sash. Work slowly and carefully making sure not to damage the old window sash. This is best done on an elevated ladder, not on the ground. Also, you should have someone on the ground to hold it steady.

Make sure that the window frame is ready to receive the new pane when you have removed the old putty. Measure the width and height of the sash opening and subtract 1/8 inch from each measurement (to allow for seasonal expansion and contraction). Bring these measurements to an hardware store or home center and have a piece of stock glass cut to size. Alternatively, you can cut the glass yourself if you have the tools you need.

After putting in the new glass After installing the glass, apply some caulking to the edge. This will make the glass weatherproof. Then, you can install a glazier's pointing on each side of the frame to hold the pane in its place. The points should not be so tight that they create friction between the sash and frame however they shouldn't be loose.

Before applying the putty on the surface, knead thoroughly until it becomes soft and free from lumps. Roll it into pencil-sized strips. Apply the first strip to the frame's corner. Work from corner to corner to ensure it's even and smooth.

Glazier's Points

The glazier's facets are small triangular pieces that allow glass to be secured into frames for windows without scratching or damaging the fragile surface. Understanding how to use these hidden tiny pieces of help is simple and can save you money on professional installation or the cost of purchasing new glass.

After removing the old putty, glazier points as well as any remaining leftovers clean the frame thoroughly using a utility knife. Lightly sand the frame in the rabbet grooves to smooth out rough areas. If you do sand the wood, ensure you protect it with painter's tack to avoid accidental damage.

Note down the dimensions of the frame. Take these measurements to a hardware store or home center, and have the new pane made slightly smaller than the frame's opening. This will ensure that the pane fits perfectly and allows for expansion and contraction.

Place the new pane in the frame and push it in using your hands. Then use the point of your chisel or back of the putty knife to pierce the glazier's facets, as illustrated in Figure 11. After you're done, the points should be flush with the top edge of the pane and the raised shoulders of the points should be just below the rabbet's lip. 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. Allow it to dry and cure completely.

Once the glazing compound has dried, you're ready to install the new window sash. First, coat the wood with a thick coat of linseed oil. This will prevent the newly-created putty from drying out and cracking when it absorbs moisture. Apply the coating using a brush this coat, or the tip of the putty blade. Then use the chisel that is 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 every 10 inches around the perimeter of the frame.

Putty

A baseball that is thrown or a rock that is errant or falling branch could cause a window pane to crack or break. Most windows can be replaced by putting in a new piece. The glass is held in place with tiny metal clips known as a glazier's point, and putty, which is often called glazing compound. Remove the old pane and clean the area with a rag, a pull-type scraper or wood chisel. Wear protective glasses and gloves when working. You'll need a heat gun if the window is glued into the frame.

If you plan to reinstall the original sash in the future, take care to remove any pieces of molding that hold the old pane in place. Sand the sash until it's flat and ready to receive new caulk. Once the sash is installed, apply a new caulk made of silicone around the glass to ensure that it doesn't swell or fade over time.

Remove the glazing points in the rabbets. These are the grooves on the sash, where the glass is located. If they're difficult to cut out, try placing a hand tool like a heat gun to soften them before you do. If you're using a heated gun, make sure not to cause damage to the railings or sash by holding the tool too close.

Once the old glaze points and putty have been removed, prepare a bed for the new pane. Roll a rope with glazing compound between your fingers, and make it around 1/2 inch thick. Then, push it into the rabbets, where the glass will rest. The glass must rest against the putty on both sides. If you need to you want to tap your glass lightly into the rabbet with your thumb.

If the new pane is cracked, you can apply the silicone caulk or glass glue based on solvents to seal the crack prior to pressing it into the sash. If the crack is not sealed, you'll need to apply putty to keep the water out. After the putty has dried and the film is oily, wipe it off the glass with a rag and allow it to completely dry before painting. Paint after the putty is completely dry. It will not create a solid seal and could be leaking or discoloring over time.

Paint

If you've suffered a break in a window pane, then you may be concerned about the expense of a new one. However, replacing one glass pane does not have to break the bank when you do it yourself. Even double-paned windows can be replaced for a fraction of the price it will cost for a professional.

If you are working with large glass windows, first make sure it is securely fixed to the frame. This task can be done relatively easy and fast using the appropriate tools and techniques.

If you're ready to begin with the removal of the old window pane by prying out the glazing points of metal that are connected to it. They are basically tiny metal triangles which function as "nails" that hold the window in in the wood frame. They are submerged under a bead of glazing putty, which hardens into a solid, moulded wedge that holds the window firmly in place and conceals the window's points.

After removing the old pane, clean the frame and wood. Scrape off any old paint and sand down the rabbet grooves in which the glazing points were. Sand them to bare wooden surfaces so you can paint the frames with the same color. After sanding, apply a coat of flax oil to the bare wood to prolong its life.

Then, you need to measure 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 size 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 your local hardware or home improvement store and have cut the glass 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.