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How to Replace Window Panes

A damaged or cracked window is an issue. This can be an opportunity to upgrade your windows to energy efficient or insulated ones and enjoy benefits like increased comfort, increased resale value and reduced utility costs.

You can do it yourself for 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If your single-pane windows are outdated damaged, cracked or deteriorating, replacing them with newer glass that is tempered or insulated will increase energy efficiency and reduce noise while preserving the historical integrity of older homes. The replacement of a window pane is relatively easy and can be completed by homeowners with basic hand tools. Alongside a replacement pane, the following items are needed for the replacement upvc window handles process: latex glazing putty pliers, glazier's points and a heat gun for warming the old putty if required. Wear safety glasses and gloves prior to starting. Working with broken glass can cause serious injuries.

Take out any broken glass pieces that remain. It is best to use pliers however a flathead could work equally. Use a wood chisel, or putty knives to remove any old putty that remains around the frame and window sash. Work slowly and carefully, taking care not to break the existing window sash. It is a good idea to do this on a stable ladder rather than on the ground, and to have someone stand below the sash to help hold it in place.

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 by subtracting 1/8 inch from the measurements of width and height. Take these measurements to the nearest hardware store or home center, and have a piece of stock glass cut to size. Alternately, you can cut the glass yourself, if you have the appropriate tools.

After installing the glass Apply a small amount of caulking on the edges. This will make the glass weatherproof. Install a glazier's pointing on both sides of the frame. This will ensure the pane. The points should not be too tight that they cause friction between the frame and sash However, they should not be loose.

Before applying the putty work it in a gentle manner until it is smooth and free of lumps. Cut it into pencil-sized pieces. The first strip should be glued to the corner of the frame. Work from one corner to the next, making sure it is even and smooth.

Glazier's Points

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

After the old putty as well as the glazier's point are gone and the frame is thoroughly cleaned using a utility knife to remove any remaining traces. If necessary you can 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.

Take measurements of the empty frame and write down accurate measurements. These dimensions can be taken to the hardware or home center store, and the new frame will be cut slightly smaller. This will ensure that the pane fits comfortably and allows for expansion and contraction.

Place the new window in the frame and push it into the frame with your hand. Then, use the tip of your chisel, or the back of the putty knife to pierce the glazier's points as shown in Figure 11. When you're done, they should be flush with the top edge of the pane. the shoulders that are raised of the points should be below the lip of the rabbet groove.

Apply a small amount of glazing compound on the edges of the new glass and into the rabbet grooves to seal and protect them. Allow it to dry and cure completely.

After the glazing compound dries, you're ready to install the new window sash. First, you need to coat the wood with a thick layer of linseed. This will prevent the new putty from soaking in the moisture and deteriorating and cracking over time. Apply this coat using a brush or the tip of your putty knife, then use the chisel or the back end of the putty knife to gently press the new sash and glazier's tips into the grooves of the rabbet. Repeat this process at intervals of 10 inches around the frame.

Putty

A baseball that is thrown or a rock that is errant or a falling branch can cause a window pane to break or crack. Fortunately, the majority of windows can be repaired by simply putting a new piece in the proper place. The glass is held in place by a small metal clip, called a glazier’s point and putty. This compound is also called glazing compound. Before you install a new pane, first remove the old one and clean up the area using a rag and the pull-type paint scraper or the wood chisel. Wear protective glasses and gloves while doing this work. If the window is attached to the frame, you'll need to make use of a heat gun to soften the adhesive before prying it free.

If you're planning to replace your original sash, remove the mold that holds the old pane. Sand the sash until it's flat and ready to receive new caulk. After the sash has been re-installed, apply a new caulk made of silicone around the glass to ensure that it will not leak or change color over time.

Remove the glazing points in the rabbets. These are the grooves in the sash, which is where the glass is located. If they're hard to cut, place a hand tool such as a heating gun over them to allow them to soften before. If you're using a heated gun, make sure not to scratch the sash or glass replacement windows its railings by holding the tool too closely.

Once the old points of glazing and putty are removed, prepare a bed for the new pane. Roll a rope with glazing compound between your fingers and make it about 1/2 inch thick. Then, press it into the rabbets in which the glass will sit. The glass must be positioned against the putty on both sides. If you need to gently tap your glass into the rabbet using your thumb.

If the new pane has damaged, you can use a silicone caulk or a glass glue based on solvents to fill in the crack prior to pressing it in the sash. In other cases, you'll need to apply putty on the crack to form a tight seal and keep water out. When the putty dries, clean the oily film off the glass with the help of a rag. Allow it to dry completely before painting. If you paint before the putty is completely dry, it won't form a solid seal and could leak or discolor in time.

Paint

You might be worried about replacing a broken pane of glass. But the truth is that replacing a single glass pane doesn't have to break the bank if you do it yourself. Even a double-paned window can be replaced for a fraction of the price it will cost an expert.

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

When you're ready to start with the removal of the old window pane by removing the metal glazing points that are attached to it. These are tiny metal triangles that act as "nails" that hold the window in the frame. They are submerged under a bead of glazing putty that hardens into a solid, formed wedge that holds the window firmly in place and conceals the edges.

After removing the old pane, clean the frame and the wood. Scrape off any old paint and sand the rabbet grooves where the glazing points were. These should be sanded down to bare wood so that you can paint them the same shade as the rest of the frame. After sanding the wood, apply a layer of flax oil. This will help to extend its life.

Next, measure the dimensions of the window's opening. It is necessary 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 also allow for expansion and contraction of the glass in times of seasonal changes. You can bring these measurements to a hardware or home improvement shop and have 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.