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How to Replace Window Panes

A damaged window pane can be a nuisance. This could be an opportunity to upgrade your windows to energy efficient or insulated ones, and reap benefits like increased comfort, increased resale value and reduced utility costs.

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

Glass

Replace your single-paned windows using tempered or insulation glass to improve energy efficiency, cut down on noise, and protect the historic integrity of your older home. Most homeowners with basic hand tools can replace windows with ease. You will also require an extra window pane, glazier's suggestions, pliers, and latex glaze putty. If necessary, you can make use of a heat gun to warm the old putty. Before starting, put on gloves and safety goggles as working with broken glass can cause injuries.

Begin by removing any broken pieces of glass for window replacement. This is best accomplished with pliers, though using flathead screwdrivers can be used in the pinch. Utilize a wood chisel or putty knife to get rid of any old putty that remains around the frame and the replacement window locks sash. Work slowly and carefully making sure not to break the existing window sash. It is best to do this on a stable ladder rather than the ground, and to have someone standing below the sash to help keep it steady.

Prepare the window pane replacement frame to receive the new pane once you have removed the old glue. Take measurements of the width and height of the opening for the sash by subtracting 1/8 inch from each measurement (to allow for seasonal expansion and contraction). These measurements can be sent to a hardware or home center store to get an item cut from glass stock to the proper size. You can also cut the glass by yourself if you possess the appropriate tools.

After putting in the new glass 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 shouldn't be so tight that they cause friction between the frame and sash however they should not be loose.

Before putting the putty on, work it in a gentle manner until it is soft and free of lumps. Then make it into pencil-sized strips. The first strip should be placed in the corner of the frame, moving from one corner to another to ensure it is even and smooth.

Glazier's Points

The glazier's points are tiny triangular pieces of steel that allow glass to be secured into a window frame without damaging or scratching the delicate surface. It's easy to understand how to use this hidden tool, and you'll save money on the cost of a professional installation.

After the old putty and glazier's points are removed Clean the frame thoroughly with a knife to eliminate any remaining residue. Lightly sand the wood in the rabbet grooves, if necessary, to smooth rough areas. If you do sand your wood, be sure to protect it with painter's tack to avoid accidental damage.

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

Place the new pane in the frame and push it in with your hands. Use the chisel's point, or the edge of the putty blade to smudge the glaziers' points as shown in Figure 11. The glazier's points should be flush against the top edge of the pane and the raised shoulders should be just below that lip.

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

After the glazing compound dries and the glazing compound is dry, you can install the new window sash. First, coat the wood with an even layer of linseed. This will keep the new putty from sucking in the moisture and drying out and cracking with time. Use a brush to apply this coat, or even the tip of the 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 grooves of the rabbet. Repeat this procedure every 10 inches along the frame's perimeter.

Putty

A baseball thrown, a rock thrown in error or a branch falling could result in a broken or cracked double glazed window replacement pane. Most windows can be replaced by simply putting in a fresh piece. The glass is held into the position with a tiny metal clip, also known as a 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 gloves and safety glasses while doing this work. You'll need a heat gun if the window is glued to the frame.

If you are planning to replace your original sash, you must remove the molding that holds the old pane. Sand the sash until it's flat and ready to receive new caulk. After the sash has been put back in place then, you can apply a silicone caulk over the glass. This will ensure that it won't leak over time or discolor.

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 for a few minutes to soften them. When using a heat tool, be careful to avoid damaging the sash and its railings.

Once the old glazing points and putty have been removed make a bed for the new pane. Roll a piece 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 is essential that the glass rests against the putty in all places on both sides, so if you need to, lightly 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 glass glue or silicone caulk before pressing it into the sash. In other cases, you'll need to apply putty on the crack to form an impervious seal to keep water out. Once the putty is dry remove the oily film from the glass and allow it to dry completely before you paint. Paint before the putty has completely dried. It won't form a good seal and could be leaking or discoloring over time.

Paint

If you've had a broken window pane, you may be worried about the expense of replacing it. 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 glazing windows Replacement-paned window can be replaced for a fraction of the price it will cost an expert.

If you're working with large glass windows, first make sure it is securely attached to the frame. With the right tools and techniques to accomplish this task fairly easily and fast.

When you are ready to begin with the removal of the window pane. Remove the metal glazing points attached to it. These are tiny metal triangles that function as "nails" that hold the window in the frame. They are buried beneath a bead or glazing putty which hardens into an unbreakable wedge which holds the wood frame securely in place and conceals the edges.

Once you have the old pane removed, clean up the surrounding frame and wood. Scrape off any paint that has been used and sand down the rabbet grooves that the glazing points were. These should be sanded down to bare wood, so that you can paint them the same color as the rest the frame. After sanding the wood you can apply a layer flax oil. This will help to extend its life.

The next step is to measure the dimensions of the window opening. It is necessary to measure the vertical and horizontal dimensions of the entire opening, as well as the thickness. Subtract 1/8 inch from each measurement to ensure that you have the exact size for the new pane. This will also allow for expansion and contraction of the glass window replacement near me during seasons of changes. Take these measurements to a hardware or home improvement store and have 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.