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How to replace Window pane Window Panes

A cracked window pane can cause a lot of trouble. This can be an opportunity to upgrade your windows to energy efficient or insulated ones to enjoy benefits like increased comfort, increased resale values and lower utility costs.

It's a project you can take on yourself for less than the cost of hiring a professional. It requires the right tools and an hour or two of your time.

Glass

Replace your single-paned windows with tempered or insulation glass to improve energy efficiency, cut down on noise, and protect the original character of your home's older. The replacement of the window pane is easy and can be completed by anyone with basic hand tools. You'll also require a replacement window pane, glazier's tips, pliers, and latex glazing putty. If necessary you may use a heatgun 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 remaining broken pieces of glass. This is best accomplished with a pair of pliers, though using a flathead screwdriver can also be used in a pinch. Use a wood chisel, or putty knives, to take away any remaining old putty around the frame and window sash. Be careful not to break the window sash. Work slowly and carefully. It is recommended to do this on a sturdy ladder rather than on the ground, and to have someone standing below the sash to help hold it steady.

After you have removed all of the old putty, it is time to prepare the window frame to accommodate the new pane. To allow for seasonal expansion or contraction, subtract 1/8 inch each from the measurements of the width and height. Take these measurements to a hardware store or home center and find a piece glass cut to size. You can also cut the glass yourself if have the right tools.

After putting the new pane in place, run a small bead of caulking along the edge to make it weatherproof. Install a glazier's pointing on both sides of the frame. This will help secure the pane. The points shouldn't be so tight as to cause friction between the sash and the frame, but they also shouldn't be loose.

Before applying the putty on the surface, knead thoroughly until it is smooth and free from lumps. Then, roll it into pencil-size strips. Apply the first strip to the corner of the frame. Work from corner to corner and ensure that it is even and smooth.

Glazier's Points

The glazier's points are tiny triangular metal pieces which help to secure the glass to the frame without causing damage to the delicate surface. It's easy to understand how to use this hidden tool, and you'll save money on the cost of an installation by a professional.

After the old putty and the glazier's point are gone and the frame is thoroughly cleaned using a utility knife to get rid of any remaining traces. If needed, lightly sand the wood along the grooves of the rabbets to smooth rough spots. If you decide to sand wood, cover it with painter's tape to prevent accidental damage.

Measure the empty frame's dimensions and record precise measurements. Take these measurements to a hardware store or home center and have the new pane cut slightly smaller than the frame's opening. This will ensure a secure fit and will allow room for expansion and contraction.

Insert the new pane into the frame and push it in using your hands. Then use the point of your chisel or back end of the putty knife to pierce the glazier's points as shown in Figure 11. When you're done, they should be in line with the top edge of the pane. the shoulders that are raised of the points should be below the rabbet's rim groove.

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

Once the glazing compound has dried it's time to put in the new window sash. First, coat the wood with an even layer of linseed. This will prevent the newly-created putty from drying out and cracking due to the moisture it absorbs. Apply the coat using a brush or the tip of your knife, then use the chisel, or the back end from the putty knife to gently hammer in the new sash and glazier's points into the grooves of the rabbet. Repeat this process every 10 inches around the frame's perimeter.

Putty

A baseball that is thrown or a rock that is errant or a fallen branch can cause a window to break or crack. Fortunately, the majority of windows can be easily replaced by simply putting a new piece in place. The glass is held in place by a small metal clip, called the glazier's point, and putty. This compound is also referred to as glazing compound. Before installing a new pane, first remove the old one and clean up the area with an abrasive and an abrasive scraper that is a pull type or the wood chisel. Wear protective glasses and gloves while working. If the window is glued to the frame, you'll have to use a heat gun to soften the adhesive before prying it free.

If you're planning to install the original sash in the future, take care to remove the molding pieces that are used to secure the old pane. Sand the sash until it's flat and ready to receive new caulk. Once the sash is re-installed and sanded, apply a fresh silicone caulk to the glass to ensure that it won't leak or discolor in time.

Remove the glazing points from the rabbets and the grooves in the sash where the glass is. If they are hard to cut, place a hand tool such as a heating gun over them for a few minutes to soften them. When using a heating tool, make sure to not scratch the sash and its railings.

After the old points of glazing and putty have been removed, prepare a bed for the new pane. Roll a rope of glazing compound between your hands, and form it into a 1/2-inch thick. Place it into the rabbets where the glass will be placed. The glass must rest against the putty on both sides. If needed gently tap your glass into the rabbet using your thumb.

If the new pane has cracked, you can apply a silicone caulk or a glass glue based on solvents to cover the crack before pressing it into the sash. Otherwise, you'll need to apply putty on the crack to form an airtight seal and keep water out. After the putty has dried then clean the oily film off the glass using a rag and allow it to completely dry before painting. If you paint before the putty has completely dry, it will not form an effective seal and could be leaking or discoloring over time.

Paint

If you've had a broken window pane, you may be concerned about the expense of replacing it. In reality, replacing a single pane of glass doesn't have to be costly when you do it on your own. Even double glazed windows replacement-paned windows can be replaced for replace window pane a fraction of the price it costs a professional.

If you are working with a large glass window first ensure it is securely fixed to the frame. This job can be done relatively easy and fast using the right tools and techniques.

Once you're ready to begin with the removal of the old window pane by removing the metal glazing points that are connected to it. These are small metal triangles which act as "nails" that hold the window in place. They are submerged beneath a bead or glazing putty that hardens to an unbreakable wedge which holds the wood frame securely in place and hides the sharp edges.

After removing the old pane, clean the frame and wood. Scrape off any paint and sand down the rabbet grooves where the glazing points were. They should be sanded to bare wood, to allow you to paint them the same shade as the rest of the frame. After sanding, apply a layer of flax oil on the wood's surface to extend the life of the frame.

Then, take measurements of the dimensions of the window's opening. You will need to take horizontal and vertical measurements of the entire opening and also the thickness of the old pane. To determine the exact dimensions of the new pane, subtract 1/8 inch from both measurements. This will also allow for expansion and contraction of the glass during seasonal changes. You can take these measurements to a hardware store or home improvement store 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.