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How to Replace Window Panes

A damaged window pane can be a nuisance. This can be an opportunity to upgrade to energy-efficient windows replacement or insulated ones, and reap advantages like improved comfort, increased resale values and reduced utility bills.

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

replace window pane your single-paned windows with tempered insulate glass to improve the efficiency of your energy, reduce noise, and preserve the historic integrity of your older home. A majority of homeowners with hand tools can repair windows with ease. You will also require a replacement glass for windows window pane, glazier's tips pliers, and latex glaze putty. If necessary you may use a heatgun to warm the old putty. Before starting, wear gloves and safety glasses as working with broken glass can cause injuries.

Begin by removing any broken pieces of glass. It is recommended to use pliers however, a flathead may work as well. Make use of a wood chisel or putty knife to get rid of any old putty remaining around the frame and window sash. Be careful not to damage the window sash. Be careful and slow. This is best done on a ladder, not the ground. Also, you should have someone on the ground to hold it steady.

Make sure that the window frame is ready to accommodate the new pane when you have removed the old putty. Find the width and the height of the opening in the sash and subtract 1/8 inch from each measurement (to allow for seasonal expansion and contraction). These measurements can be sent to an hardware or home centers store to get an item cut from stock glass to the right size. You can cut the glass yourself if you possess the appropriate tools.

After installing the new glass Apply some caulking on the edges. This will make the glass weatherproof. Then, place a glazier's tip on the frame's opposite side to hold the pane in the right place. The points should not be tight enough to cause friction between the frame and sash however they should not be loose.

Before applying the putty to the surface, you must knead it thoroughly until it becomes soft and free of lumps. Then you can roll it into pencil-sized strips. Place the first strip to the corner of the frame, working from one corner to the other so that it is smooth and even.

Glazier's Points

The glazier's points are the tiny triangular pieces of steel which help to secure glass into the frame of a window without scratching or damaging the delicate surface. It's easy to understand how to use this secret tool, and you'll save money on the expense of an installation by a professional.

After taking off the old putty, glazier points and replace window Pane any leftovers, clean the frame thoroughly using an utility knife. If necessary you can lightly sand the wood in the grooves of the rabbets to smooth out rough spots. If you decide to sand the wood, be sure to protect it with painter's tape to avoid accidental damage.

Note down the exact dimensions of the frame. Take these measurements to a hardware store or home center and have the new pane cut smaller than the frame's opening. This will ensure a snug fit and leave room for expansion and contraction.

Place the new pane in the frame and push it in place with your hand. Use the point of the chisel or the edge of the putty blade to smudge the glazier's points, as shown in Figure 11. When you're done taping, they should be in line with the top edge of the pane, and the shoulders of the points should be just below the lip of the rabbet groove.

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

Install the new window sash once the glazing compound has dried. First, saturate the wood with a thick coat of Linseed oil. This will prevent the new putty drying out or cracking when it absorbs moisture. 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 point into the rabbet grooves. Repeat this process in intervals of 10 inches around the frame.

Putty

A baseball hit or a rock thrown by error or a branch falling could result in a broken or cracked window. Luckily, most windows can be replaced by simply putting a new piece of glass in its the proper place. The glass is held in place by a small metal clip called a glazier's point, and putty, also called glazing compound. Before you install a new pane, first get rid of the old one and clean up the area using a rag and a pull-type paint scraper or the wood chisel. Wear safety glasses and gloves while working. You'll need a heating gun when the window is fixed into the frame.

If you are planning to reinstall your original sash, you must remove the molding that holds the old pane. Then, sand the sash to make sure it's flat and ready for new caulk. Once the sash is reinstalled, you can apply a silicone caulk on the glass. This will ensure that it doesn't be leaking 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 hard to chisel out, try holding a hand tool like a heat gun to soften them first. If you're using a heated gun, make sure not to scratch the railings or sash by using the tool too closely.

After the old glaze points and putty are removed, prepare a bed for the new pane. Roll a rope of glazing compound between your hands, and form it to be about 1/2-inch thick. Then, push it into the rabbets in which the glass will be. It's important that the glass sits on the putty on both sides 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 before pressing it into the sash. Otherwise, you'll need to apply putty over the crack to create an airtight seal and keep water out. After the putty has dried, clean the oily film off the glass using the help of a rag. Allow it to completely dry before painting. If you paint before the putty is fully dry, it won't create an effective seal and could be leaking or discoloring over time.

Paint

If you've suffered a break in a window pane, you might be concerned about the expense of replacing it. In reality, replacing a single piece of glass doesn't have to be expensive if you do it on your own. Even double-paned windows can be replaced for a fraction of what it would cost an expert.

First, if you're working on a large-sized window, make sure that it is securely attached to the frame. Using the proper tools and techniques, you can complete this task easily and speedy.

When you are ready to begin taking down the old window pane. Take out the metal glazing points that are attached to it. They are basically tiny metal triangles that act as "nails" which hold the window in in the wood frame. They are submerged under a bead of glazing putty that transforms into a solid formed wedge that holds the window firmly in place and Replace Window Pane hides the points.

Once you have the old pane removed clean the surrounding frame and wood. Scrape off any old paint and sand the rabbet grooves where the glazing points were placed. Sand them down to clean wooden surfaces, allowing you to paint the frames the same shade. After sanding the wood you can apply a layer flax oil. This will help prolong the life of the frame.

Next, measure the width of the window opening. It is necessary to take vertical and horizontal 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 also allow for expansion and contraction of the glass during seasons of change. Bring these measurements to your local hardware or home improvement store and ask them to cut you 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.