How To Replace Window Pane With Wood Molding

Crack! An errant baseball, a hurled stone, or a falling branch is all it takes to finish the life of a windowpane. And for nigh modern, double-glazed windows, that ways a trip to the local glass shop for repairs.

Only for old-fashioned, single-glazed woods sash, you lot tin easily replace the pane yourself. It's ane of the rare homeowner projects that doesn't crave some practice to tool the putty," says Tom Silva, This Old Business firm general contractor. "Yous want to stop up with bang-up, well-baked creases in the corners and straight runs in between."

The reglazing technique Tom demonstrates on these pages also comes in handy when the sometime putty itself cracks or falls out but the glass remains intact. (In that example, Tom removes all the old putty; it's too far gone to patch.) Any the glazing project, he recommends taking out the window sash and laying it flat on a workbench, if possible. "Trying to reglaze a sash that'due south notwithstanding in it'south opening takes longer, and information technology'southward far more than difficult to do a skillful job."

Pace i

Remove the Drinking glass

Don gloves and safety glasses and embrace the broken pane with a rag. Tap the middle of the rag-covered pane with a hammer to loosen the shards.

With gloved hands, wiggle free any pieces that remain embedded in the putty.

If the sash is all the same in the window opening, or the pane has a crack or two merely is otherwise intact, information technology's best to remove the putty first, then the drinking glass.

Step ii

Remove the Old Putty

Pry out any loose putty with a painter's tool. Gradually soften the putty that'due south still intact by belongings a estrus gun about an inch away and moving it back and along.

Put doubled sheets of aluminum foil on the adjacent panes to proceed them from beingness cracked by the estrus.

Use the chiseled betoken of the tool to rake out the warm putty. Repeat on the remaining sides.

TIP: When removing putty from a pane that isn't cleaved, Tom holds a slice of metal flashing over the glass to dissipate the heat.

Step 3

Prep the Rabbets

Pry the one-time metal glazing points out of the rabbets, the grooves in the sash where the glass sits.

Scrape and sand the rabbets down to bare wood. Brush an exterior primer onto the blank woods then it won't depict the oils out of the putty and shorten its life.

When the paint dries, knead a handful of putty until it's warm and malleable, then printing it into the rabbets, filling them completely (as shown). Neatness doesn't matter at this stage.

Step four

Bed the Glass

Wiggle the pane into the putty while applying even pressure with the tips of your fingers.

Continue pushing downwardly until the glass is centered in the opening and virtually 1/viii inch of putty remains between the face of the drinking glass and the rabbet.

If whatsoever voids show under the glass, pull out the pane, add together more putty, and get-go over.

Step 5

Set the Points

At the centre of each side of the pane, place a glazier's indicate flat on the drinking glass and fit the tip of the putty knife confronting the bespeak's raised shoulders.

While applying slight downwards pressure, gently rock the point from side to side until information technology'southward seated in the wood.

Repeat on the contrary side, and so on the 2 remaining sides. For panes 12 inches or longer on a side, space the points evenly four to 6 inches autonomously.

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

Step six

Knead the Putty

Warm a scattering of putty and roll it into a long rope about about ¾ inch in diameter.

Step 7

Utilize Putty Rope

Identify the rope around the edges of the glass and push it firmly against the exposed rabbets.

If one rope isn't plenty, roll out more and overlap the ends to grade an unbroken ring of putty effectually the edges of the glass.

Footstep viii

Smooth the Putty

Starting in a corner, balance the putty knife'south blade at about a 45-degree angle to the glass, with its tip on the top edge of the rabbet and one corner on the glass.

Flatten the blade confronting the putty with your index finger and maintain the angle equally y'all pull the knife forth one side of the pane.

Leave a neat pucker in the corner — then collect the excess putty.

For the remaining sides, set the blade tip on the pucker and repeat the tooling procedure.

TIP:If the knife pulls the putty off the glass, clean the blade and try again.

Step nine

Fine-tune

If the underside of the putty tin be seen from the other side of the window, the putty is too wide and needs retooling.

Set the corner of the bract on the drinking glass a petty closer to the rabbet than before and hold the pocketknife handle a bit closer to the glass.

Retool as in Step 8. You'll know you've gotten the angle correct if the putty's edge lines up with the inside edges of the sash or muntins on the opposite side of the window.

Scrape abroad the excess (as shown).

Step 10

Prime and Paint

Wait most seven to ten days for the putty to stiffen up, then clean the oily putty flick off the glass with a dry out rag.

Paint the putty with an oil-based primer, overlapping it nearly 1/sixteen inch onto the glass to prevent h2o from getting behind the putty.

After the primer dries, apply a coat of exterior paint.

When the paint dries, y'all can give the pane a thorough scrubbing.

Tools Needed

Source: https://www.thisoldhouse.com/windows/21016525/how-to-replace-a-window-pane

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