Step 4: Bed the Glass

bedding the glass
Photo: Kindra Clineff
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Wiggle the pane into the putty while applying even pressure with the tips of your fingers.

Continue pushing down until the glass is centered in the opening and about 1/8 inch of putty remains between the face of the glass and the rabbet.

If any voids show under the glass, pull out the pane, add more putty, and start over.
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    Tools List

    • putty knife
      ½-inch putty knife,
      For tooling putty; should be flexible and clean.
    • painter's tool
      5-in-1 Painter's tool,
      For scraping out old putty.
    • electric heat gun
      Heat gun,
      For softening old putty.
    • paintbrush
      1-inch paint brush,
      For priming sash.

    Shopping List

    1. GLASS
    For pane dimensions, measure the opening from top to bottom and side to side, then subtract 1/8 inch from each measurement.

    2. ALUMINUM FOIL
    Protects undamaged glass from heat.

    3. GLAZIER'S POINTS
    Hold glass against sash. Tom uses push-type points with shoulders.

    4. GLAZING PUTTY
    Seals the edge of the glass against the weather. Tom uses an oil-based product in a can.

    5. EXTERIOR PRIMER
    Seals wood against moisture; extends putty life.