How to Replace Window Panes

A damaged window pane could be a nuisance. It can also be an opportunity to upgrade your glass to energy-efficient or insulated windows to benefit from improved comfort, increased potential for resales, and less costs.

It's a project you can tackle yourself at a fraction of 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 using tempered or insulated glass to increase the efficiency of your energy, reduce noise, and preserve the historic integrity of your old home. The procedure of replacing the window pane is simple and can be done by most homeowners who possess basic hand Replace Window Pane tools. You'll also require a replacement windows prices window pane, glazier's tips, pliers, and latex glazing putty. If you need to you may make use of a heat gun to warm the old putty. Before starting, put on protective gloves and goggles since 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, however, a flathead screwdriver can also be effective in the pinch. Use a wood chisel, or putty knives, to take away any old putty that remains around the frame and the window sash. Be careful to not scratch the window sash. Be careful and slow. 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 in place.

Once you've removed all the old putty, you can prepare the window frame for replace Window pane the new pane. Find the width and the height of the sash opening, subtracting 1/8 inch from each measurement (to allow for seasonal expansion and contraction). These measurements can be sent to a home center or hardware store to have cut a piece of glass stock to the proper size. You can also cut the glass yourself if you have the appropriate tools.

After installing the new pane, run a small bead of caulking along the edge to ensure it is weatherproof. Then, you can install a glazier's pointing on the frame's opposite side to secure the pane into place. The points shouldn't be too tight that they cause friction between the sash and frame, but they also should not be too loose.

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

Glazier's Points

The glazier's facets are small triangular pieces which help to secure glass into frames for windows without damaging or scratching the delicate surface. Knowing how to use these tiny helpers is simple and could save you money on a professional installation or the cost of purchasing new glass.

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

Measure the empty frame's dimensions and write down accurate measurements. Take these dimensions to a hardware store or home center and request that the new pane cut smaller than the frame's opening. This will ensure that the pane fits snugly and allows for expansion and contraction.

Place the new pane into the frame and push firmly using your hands. Then, use the tip of your chisel, or the back of the putty knife to tap in 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 raised shoulders of the points should be just below the lip of the rabbet groove.

Apply a small amount of glazing compound over the edges of the new glass and in the rabbet grooves to seal and protect them. Allow this to dry and cure fully.

Once the glazing compound has dried and the glazing compound is dry, you can install the new window sash. First, coat the wood with a thick coat of linseed oil. This will keep the new putty from soaking in the moisture and deteriorating and cracking with time. 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 tool or the back of the putty handle to gently hammer the new sash or glazier's tip into the grooves of the rabbet. Repeat this procedure every 10 inches around the frame's perimeter.

Putty

A baseball thrown at you, an errant rock or falling branch could cause a window pane to crack or break. The majority of windows can be repaired easily by simply putting in a fresh piece. The glass is held in place with tiny metal clips known as a glazier's point, and putty, often called glazing compound. Remove the old pane and clean the area with a rag, a pull-type scraper or wood chisel. Wear safety glasses and gloves while working. If the window replacement is glued to the frame, you'll need make use of a heat gun to soften the adhesive prior to taking it off.

If you are planning to replace window Pane the original sash, remove any molding pieces that hold the old pane in place. Sand the sash until it is flat and ready to receive new caulk. Once the sash is installed then, apply a new caulk made of silicone around the glass to ensure it doesn't swell or fade over time.

Remove the glazing points in the rabbets. These are the grooves in the sash where the glass is. If they're hard to chisel, use a hand tool such as a heating gun over them for a few minutes to soften them. If you're using a heated gun, make sure not to cause damage to the railings or sash by using the tool too tightly.

After the old glazing points and putty have been removed, make a bed for the new pane. Roll a rope of glazing compound between your fingers and make it around 1/2 inch thick. Place it into the rabbets, where the glass will be placed. The glass must be positioned against the putty on both sides. If needed you want to tap your glass lightly into the rabbet with your thumb.

If the new pane is cracked you can fill it with a solvent-based glass glue or silicone caulk before pressing it into the sash. If not, you'll have to apply putty over the crack to create an airtight seal and keep water out. After the putty has dried clean the oily film from the glass and let it dry completely before you paint. If you paint before the putty is fully dry, it won't form a solid seal and could discolor or leak over time.

Paint

If you've suffered a break in a window pane, you might be concerned about the expense of replacing it. But the truth is that replacing a single glass pane doesn't have to break the bank If you can do it yourself. In fact, even a double-pane window can be replaced at less than the cost of 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 complete this task easily and fast.

Once you're ready to begin, begin by removing the old window by prying out the glazing points made of metal that are connected to it. These are basically small metal triangles which function as "nails" that hold the window in place in the wood frame. They are submerged beneath a bead or glazing putty that sets to form an unbreakable wedge that holds the frame in place and hides the points.

After removal of the old pane clean the frame and wood. Scrape off any paint that has been used and sand the rabbet grooves that the glazing points were. These should be sanded down to bare wood to allow you to paint them the same color as the rest the frame. After sanding, apply a layer of flax oil on the wood's surface to help extend its lifespan.

The next step is to measure the dimensions of the window opening. You'll need to determine the horizontal and vertical dimensions of the entire opening, as well as the thickness. 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 during seasonal change. You can take these measurements to a hardware or home improvement shop and get 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.