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How to Replace Window Panes

A damaged window pane could be a source of frustration. It could also be a chance to upgrade your glass to energy-efficient or insulated windows and reap benefits like improved comfort, increased resale value and reduced utility bills.

You can do it yourself for a less than what it would cost to employ an expert. It requires the right equipment and an hour or two of your time.

Glass

If your single-pane windows are outdated, deteriorating or broken replacing them with more modern insulated or tempered glass can increase energy efficiency and decrease noise while preserving the original character of older homes. A majority of homeowners with hand tools can replace a window pane. In addition to a new pane, the following components are required for the replacement process: latex glazing putty pliers, glazier's points and a heat gun for warming the old putty, if necessary. Before starting, put on gloves and safety glasses as working with broken glass may cause injuries.

Take away any broken glass pieces that remain. This is best accomplished with pliers, however, a flathead screwdriver can also be used in the pinch. Then, use a wood chisel or putty knife to take the remainder of the old putty from around the frame and the sash. Take your time and work slowly and be careful not to break the existing window sash. It is a good idea to do this on a stable ladder rather than the ground, and to have someone standing below the sash to help hold it steady.

Prepare the window frame to accommodate the new pane once you have removed the old putty. To allow for seasonal expansion or contraction, subtract 1/8 inch each from the measurements of width and height. These measurements can be sent to a home center or hardware store to get cut a piece of stock glass Window replacements Near Me to the right size. You can also cut the glass by yourself if you possess the right tools.

After putting in the new glass, apply a small amount of caulking on the edges. This will make the glass weatherproof. Install a glazier's point on both sides of the frame. This will ensure the pane. The points shouldn't be too tight that they create friction between the frame and the sash However, they should not be loose.

Before applying the putty to the surface, knead thoroughly until it is smooth and free of lumps. Then make it into pencil-sized strips. The first strip should be placed in the corner of the frame, working from one corner to the other to ensure it is even and smooth.

Glazier's Points

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

After taking off the old putty, glazier points, and any other remnants clean the frame thoroughly using an utility knife. If necessary, lightly sand the wood along grooves of the rabbet to smooth out rough areas. If you do sand the wood, make sure to protect it with painter's tack to avoid accidental damage.

Write down the dimensions of the frame. These dimensions can be taken to the hardware or home center store and the new pane will be cut a bit smaller. This will ensure a tight fit and leave room for expansion and contraction.

Place the new window in the frame and push it into place firmly using your hand. Use the point of the chisel, or the edge of the putty blade to tap in the glazier's points as illustrated in Figure 11. When you're done, they should be flush with the top edge of the pane and the shoulders that are raised of the points should be below the rabbet's lip. groove.

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

When the glazing compound is dry, 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 due to the moisture it absorbs. Use a brush to apply this coat, or even the tip of the blade. Then use the chisel that is on the back of the putty tool or the back of the handle to gently smash the new sash or glazier's point into 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. Fortunately, windows can be replaced by simply placing a new piece in the proper place. The glass is held in place using small clips made of metal called a glazier's point and putty, often called glazing compound. Before installing a replacement pane, first get rid of the old one and clean the area using a rag and the pull-type paint scraper or a wood chisel. Wear gloves and safety glasses while doing this work. If the window is secured to the frame, you'll have to make use of a heat gun to soften the adhesive before cutting it loose.

If you are planning to replace the original sash, gently remove any pieces of molding that secure the old pane. Sand the sash until it's flat and ready to receive new caulk. After the sash has been re-installed then, apply a new caulk made of silicone around the glass to ensure it won't leak or discolor over time.

Remove the glazing points from the rabbets, the grooves in the sash, where the glass sits. If they're hard to chisel, use a hand tool like a heat gun over them to allow them to soften before. When using a heat tool, be careful to avoid damaging the sash and its railings.

Once the old points of glazing 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. Place it into the rabbets, where the glass will be put. It is essential that the glass is positioned against the putty on each side If you have to do so, gently tap the glass into the rabbet using your thumb.

If the new pane has a crack then you can seal it with a solvent-based glue or silicone caulk prior pressing it into the sash. If the crack is not sealed, you'll require putty to keep water out. After the putty has dried then clean the oily film off the glass with a rag and allow it to dry completely before painting. If you paint before the putty has completely dry, it will not form a strong seal and may be leaking or discoloring in time.

Paint

If you've had a broken window pane, you might be worried about the cost of a new one. It's true that replacing a single pane glass doesn't need to be costly when you do it on your own. Even a double glazed window replacement-paned window can be replaced for a fraction of the price it costs an expert.

First, if you are working on a large-sized window, make sure that it is securely fastened to the frame. By using the correct tools and techniques you can accomplish this task fairly easily and quick.

When you are ready to start with the removal of the window pane. Take out the glazing points made of metal that are attached to it. They are basically tiny metal triangles which function as "nails" which hold the window in place in the wood frame. They are buried beneath a layer of glazing putty that is then cured to form a solid, molded wedge that holds the window firmly in place and conceals the edges.

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

The next step is to measure the dimensions of the window sash replacement's opening. You will need to take vertical and horizontal measurements of the entire opening, as well as the thickness of the old pane. To get the exact size of the new pane subtract 1/8 inch from both measurements. This will allow for seasonal changes in the glass. Bring these measurements to a hardware or home improvement store and ask them to cut you 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.