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How to Replace Window Panes

A damaged or cracked window can be a nuisance. It could be a chance to upgrade to energy-efficient windows or insulated ones, and reap benefits such as improved comfort, higher resale value and lower utility costs.

This is a project you could do yourself for a fraction of the cost of hiring an expert. It requires the right equipment and an hour or two of your time.

Glass

If your single-pane windows replacement glass are outdated damaged, cracked or deteriorating, replacing them with newer glass that is tempered or insulated can improve energy efficiency and reduce noise while also preserving the original character of older homes. The process of replacing a window pane is relatively easy and can be accomplished by homeowners with basic hand tools. You will also need a Replacement Glass In Windows window pane, glazier's tips, pliers, and latex glaze putty. If necessary you can make use of a heat gun to warm the old putty. Wear safety glasses and gloves before you begin. Working with broken glass can cause serious injuries.

Take out any broken glass replacement on windows pieces remaining. This is best accomplished with the help of pliers however, a flathead screwdriver may work in a pinch. Then, use a wooden chisel or putty knife to take the remainder of the old putty from the frame and sash. Be careful not to scratch the window sash. Be careful and slow. This can be done best on an elevated ladder, not on the ground. Also, you should have someone below the sash ensure it is held steady.

Once you have removed all of the old putty, prepare the window replacement panes frame to fit the new pane. To allow for seasonal expansion or contraction by subtracting 1/8 inch from the measurements of width and height. These measurements can be taken to a hardware or home center store to get an item cut from glass that is in stock to the correct size. You can cut the glass yourself if you possess the right tools.

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

Before applying the putty to the surface, you must knead it thoroughly until it is smooth and free of lumps. Then make it into pencil-sized strips. The first strip should be glued to the frame's corner. Work from corner to corner, making sure it is even and smooth.

Glazier's Points

The glazier's facets are small triangular pieces which help to secure glass into a window frame without scratching or damaging the fragile surface. Understanding how to use these hidden tiny helpers is simple and could save you money on a professional installation or the cost of purchasing new glass.

After taking off the old putty, glazier points and any residue Clean the frame thoroughly with an utility knife. Lightly sand the frame in the rabbet grooves, if necessary, to smooth out rough areas. If you decide to sand the wood, make sure to protect it with painter's tape to avoid accidental damage.

Take the dimensions of the frame and note down precise measurements. These dimensions can be taken to an hardware or home centers store and the new pane will be cut a bit smaller. This will ensure a secure fit, and allow for expansion and contraction.

Place the new pane into the frame and push it in place using your hand. Utilize the point of the chisel, or the edge of the putty blade to smudge the glazier's points, as shown in Figure 11. The glazier's point should be aligned with the top edge of your pane and the shoulders should be just below the lip.

Apply a thin layer of glazing compound on the edges of the new glass and in the rabbet grooves, to seal and protect them. Allow it to dry completely and cure.

Install the new window sash after the glazing compound has dried. First, coat the wood with a thick coat of Linseed oil. This will keep the new putty from taking up the moisture and deteriorating and cracking over time. Use a brush to apply this coat, or the point of the putty blade. Then use the chisel on the back of the tool or the back of the putty handle to gently hit the new sash, or glazier's tip into the rabbet grooves. Repeat this process in intervals of 10 inches all around the frame.

Putty

A baseball thrown at you, an errant rock or a fallen branch can cause a window pane to break or crack. The majority of replacement windows glass can be replaced by installing a new piece. The glass is held into position by a small metal clip, referred to as the glazier's point, and putty. This compound is also known as glazing compound. Remove the old pane and clean the area using the rag, a pull-type scraper, or a wood chisel. Wear protective glasses and gloves while working. If the window is glued to the frame, you'll have to employ a heat gun in order to soften the adhesive prior to taking it off.

If you are planning to replace your original sash, remove the molding that holds the old pane. Then you can sand the sash down to ensure it's smooth and ready for a new caulk. After the sash has been reinstalled then, you can apply a silicone caulk over the glass. This will ensure that it won't be leaking or fade 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 placing a hand tool like a heat gun over them to soften them up first. When using a heated tool, make sure to avoid damaging the sash's railings and sash.

After the old glazing points and putty have been removed prepare a bed for the new pane. Roll a rope of glazing compound between your fingers and make it about 1/2 inch thick. Press it into the rabbets where the glass will be put. The glass should rest against the putty on both sides. If you need to gently tap your glass into the rabbet using your thumb.

If the new pane is cracked, you can cover it with a solvent-based glue or silicone caulk prior pressing it into the sash. Otherwise, you'll need to apply putty over the crack to create a tight seal and keep water out. Once the putty is dry remove the oily film off the glass and allow it to dry completely before painting. Paint after the putty is completely dry. It won't make a strong seal and may discolor or leak 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. But the truth is that replacing a single glass pane doesn't have to break the bank when you do it yourself. Even a double-paned window could be replaced for a fraction of the price it costs for a professional.

If you're working with large glass replacement windows cost, first make sure it is securely attached to the frame. This task can be made relatively simple and fast with the proper tools and techniques.

Once you're ready to begin, begin by removing the old window by prying out the metal glazing points that are attached to it. They are basically tiny metal triangles which function as "nails" which hold the window in place within the frame of wood. They are submerged beneath a layer of glazing putty, which hardens into a solid, formed wedge which holds the window in place and conceals the points.

After removal of 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. Sand them down to bare wooden surfaces, allowing you to paint the frames the same shade. After sanding, apply a coat of flax oil on the bare wood to extend the life of the frame.

Next, measure the dimensions of the window opening. It is necessary to take horizontal and vertical measurements of the entire opening, and also 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. Bring these measurements to your local hardware or home improvement store, and they will 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.