Step 5: Set the Points

setting the points
Photo: Kindra Clineff
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At the center of each side of the pane, place a glazier's point flat on the glass and fit the tip of the putty knife against the point's raised shoulders.

While applying slight downward pressure, gently rock the point from side to side until it's seated in the wood.

Repeat on the opposite side, and then on the two remaining sides. For panes 12 inches or longer on a side, space the points evenly 4 to 6 inches apart.

Flip the sash over and scrape off the excess putty that squeezed out the other side.
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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.