The Tool Barn

Re-Glazing a Window with broken Glass Pane

Playing ball inside the house and need to fix a window? Read on, and you'll be able to fix windows like there is no tomorrow.

Glazer's point
Items needed:
Putty knife
Glazing compound
Glazer's points
Chisel or Scraper
Primer Paint (depends on conditions)
Safety glasses
Safety Suggestions and Tips
Keep glass wrapped in paper until use
Warm up glazing by rolling between hands
Push glazing point straight into mutton, not against glass
Level of difficulty

Time Required:
 1 hour


Marke square area to patch
Glazing compound in can

Step 1:

There are two different kinds of window glazing. It is available either in the can or in tube. While I sometime prefer the type in the tube, makers of canned material, such as DAP claim better durability.

Broken windows pane
Broken windows pane

Step 2:

First a note about safety: GLASS IS SHARP. I'd wear leather gloves and safety glasses when taking the glass out. Remove as much glass as possible from the frame. Whatever glass remains will come out when you remove the glazing compound.

Putty knife
Putty knife

Step 3:

With as much glass as possible removed, begin removing the glazing compound. The glazing compound is the (usually) white stuff that holds the window panes in. You can start with a putty knife, but if the glazing compound has dried hard, you may need to use something else.

Tri-scraper to pry loose old glazing
Tri-scraper to pry loose old glazing

Step 4:

Older glazing compound is oil-based and a pencil-point torch is sometimes used to soften the compound. I favor a triangular scraper. Place the triangular scraper in the groove left by the glass and twist it to break off the glazing compound. Another option is a chisel. One note: don't get too forecful with the tools, you can damage the muntins (the muntin is the grille or divider in the window). Scrape off all of the glazing compound and clean up the muntins.

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