||It is always easier to replace windowpanes if you can remove
the door or window and lay it flat. Newer window sashes can snap out of their tracks easily.
Doors can be removed from their hinges. If removing the window sash or door is more trouble
than it is worth, repair it in place.
||Some windows and doors will use steel or wooden strips to
hold the windowpane in place. This tutorial focuses on a typical glazed-in window. If you
determine strips are used instead of glazing points and glazing compound, your must carefully
remove the strips to take out the broken glass. Replace the glass and re-install the strips.
||Using a putty knife or chisel, flake off the old window
glazing. (Figure 1) If you find it too hard to remove, soften the
glazing with a torch or heat gun. Be careful not to char or burn the window sash or
doorframe. As you uncover the old glazing points, pull them out with a pair of pliers.
||Once the old glazing and glazing points are removed, you
should be able to lift out the broken glass fragments.
||Once you have removed all of the glass and loose glazing,
use a scraper or chisel to gently clean off all large chunks of glazing on both sides of the
L-shaped channel. (Figure 2) Then using a piece of sandpaper, sand
the channel down to smooth, bare wood. (Figure 3)
||Measure the opening for a new piece of glass. Subtract 1/8
inch from all sides. A hardware store can cut a piece of glass to your exact dimensions. Or
you can cut the piece yourself.
||To cut your own glass, clean the glass thoroughly. Then lay
it on a smooth, flat surface. Using a square, line up your cut and make one pass with a
glasscutter. (Figure 4) Line up the scored line on the edge of a
workbench. Make sure you wear gloves for this step. Holding down the glass, snap off the cut
piece by applying pressure. (Figure 5) Repeat until the glass is cut
to the right size.
||Returning to the window frame, use a primer or sealer to
coat the bare wood. Allow it to dry before proceeding.
||When the sealer is dry, use a putty knife to place a thin
layer (1/16") of glazing compound in the L-shaped channel. (Figure 6)
Gently press the new glass into position, making sure it is contacting the glazing compound
on all edges.
||Place glazing point flat on the glass surface. Using a putty
knife, push glazing points horizontally into the wood frame to hold the glass in position.
(Figure 7) Do not bear down on the glazing points or you may break
the glass. For smaller windows, put 2 glazing points on each side. For larger windows,
position the glazing points 10" apart.
||Apply a bead of glazing compound along each edge of the
window. (Figure 8) Use your finger to create an even, sloped surface
that runs to the front of the window sash.
the glazing compound has skimmed over, you are ready to paint.
(Figure 9) Use a good sash brush that
will allow you to get a small bead of paint on the glass (1/16
inch will do). This bead of paint will help seal the window
against the outside elements. Careful to dent the glazing compound.
It takes a long time for it to dry all the way through.
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