How to Replace a Window Pane
Remove the damaged glass., Scrape away the old putty with a painter's tool., Pry the old metal glazing points out of the "rabbets.", Scrape and sandpaper the rabbets until they are smooth, bare wood., Press putty into the rabbets once the primer...
Step-by-Step Guide
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Step 1: Remove the damaged glass.
Lay the window sash onto a work table and cover the damaged pane with a rag.
Wear work gloves and goggles while doing this.
Tap the center of the covered pane with a hammer and pull out the remaining shards. -
Step 2: Scrape away the old putty with a painter's tool.
The putty might need to be softened with a heat gun, which you should hold 1 inch (2.5 cm) away. , These are the grooves in which the glass sits. , Then, brush them with an exterior primer. , You can warm and soften a handful of putty by kneading it in your hands. , Apply even pressure on all sides as you wiggle it into place.
There should be about 1/8 inch (3 mm) of putty between the face of the glass and the rabbet. , Use a putty knife to slide a glazier's point into the center of each side of the pane, sticking the point into the wood. ,,, Press it firmly against the rabbets. , Start at the top right corner and hold the blade at a 45-degree angle to the glass.
The tip of the blade should point at the top edge of the corner, with the knife's corner on the glass.
Push your index finger downward on the blade and scrape downward. , If you can see the underside of the putty from the opposite side of the glass, you need to scrape closer to the rabbet. , Then, use a clean rag to wipe away any putty film that's left on the glass. , Overlap it about 1/16 inch (1.5 mm) onto the glass. ,, -
Step 3: Pry the old metal glazing points out of the "rabbets."
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Step 4: Scrape and sandpaper the rabbets until they are smooth
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Step 5: bare wood.
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Step 6: Press putty into the rabbets once the primer dries.
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Step 7: Set and center a new pane into the putty.
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Step 8: Install a glazier's point to hold the glass in place.
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Step 9: Turn the sash over and scrape off the putty that has squeezed out to that side.
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Step 10: Knead and warm a handful of putty into a long rope that is about 3/4 inch (19 mm) in diameter.
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Step 11: Set the putty rope around the edges of the glass on each side.
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Step 12: Spread and smooth out the putty with a putty knife.
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Step 13: Remove the excess putty and repeat the process for each side.
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Step 14: Wait 7 to 10 days for the putty to stiffen.
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Step 15: Paint the putty with an oil-based primer.
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Step 16: Apply a coat of exterior paint once the primer dries.
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Step 17: Wash the pane.
Detailed Guide
Lay the window sash onto a work table and cover the damaged pane with a rag.
Wear work gloves and goggles while doing this.
Tap the center of the covered pane with a hammer and pull out the remaining shards.
The putty might need to be softened with a heat gun, which you should hold 1 inch (2.5 cm) away. , These are the grooves in which the glass sits. , Then, brush them with an exterior primer. , You can warm and soften a handful of putty by kneading it in your hands. , Apply even pressure on all sides as you wiggle it into place.
There should be about 1/8 inch (3 mm) of putty between the face of the glass and the rabbet. , Use a putty knife to slide a glazier's point into the center of each side of the pane, sticking the point into the wood. ,,, Press it firmly against the rabbets. , Start at the top right corner and hold the blade at a 45-degree angle to the glass.
The tip of the blade should point at the top edge of the corner, with the knife's corner on the glass.
Push your index finger downward on the blade and scrape downward. , If you can see the underside of the putty from the opposite side of the glass, you need to scrape closer to the rabbet. , Then, use a clean rag to wipe away any putty film that's left on the glass. , Overlap it about 1/16 inch (1.5 mm) onto the glass. ,,
About the Author
Lori Garcia
Brings years of experience writing about crafts and related subjects.
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