How To Remove Window Muntins

Pace 1

Capture the Profile

Printing a contour gauge confronting an intact muntin section and the drinking glass, as shown. The gauge's metal wires slide to create both a positive and a negative replica of the muntin's profile, which can and then be used to make a molding template.

Shown: Marker Powers, TOH senior technical editor, uses a profile guess to capture a muntin's undamaged shape. It's the offset pace in repairing the scarred portion to the correct of the gauge.

Step 2

Trace the Profile

Place the side of the gauge with the positive profile on a plastic scraper. Line up the edge of the scraper'south blade with the wires that rested against the glass and trace the profile onto the blade face, equally shown. Note: If the damage is confined to simply one side of the muntin, trace a fractional profile in a corner of the scraper blade.

Step three

Cutting Out the Scraper

Use a coping saw to cut away most of the waste plastic inside the traced line. Fine-melody the edges with a triangular slim-taper file and check your work by placing the cutout over a muntin that hasn't been damaged.

Pace 4

Mix the Epoxy

Squeeze the epoxy'due south ii components—resin and hardener—onto a plastic sheet and blend them with a stick for at least 1 minute. Next, stir talcum powder into the epoxy until it becomes stiff enough to concord its shape.

Footstep 5

Shape the Epoxy

Protect the glass on both sides of the muntin with strips of painter's tape. Using an intact scraper, utilise the epoxy to the impairment. Then place the cutout scraper over the muntin and, holding the scraper square to the glass, slowly drag it through the epoxy. You may need to brand a few such passes and add more epoxy to get a clean profile. Afterwards each pass, remove whatsoever excess epoxy from the scraper and wipe it clean with a rag dampened with white vinegar.

Footstep 6

Sand

When the epoxy hardens, apply a fine-grit sanding sponge to smooth information technology flush with the undamaged contour.

Step vii

Paint

The adjacent day, wipe the muntin and cured epoxy with denatured booze and a make clean rag. Brush on an oil-based primer, followed past a top coat or 2. Remove the tape before the last glaze dries completely.

Stride eight

Mix It Upward

The secret to making this kind of repair is to use a slow-setting epoxy, one with a working fourth dimension of 30 minutes or more than. That gives you lot the opportunity to sculpt the epoxy and lucifer the existing muntin profile before the epoxy turns rock hard and becomes tough to sand.

Most epoxies are also runny for this kind of repair; they need to exist thickened with a fine pulverisation, such as talc (shown). Blend in the pulverisation afterward the two epoxy components are thoroughly mixed. Then go on adding and blending until the compound reaches a firm consistency, like flossy peanut butter. At present y'all can proceed with the fix.

Source: https://www.thisoldhouse.com/windows/21017476/how-to-repair-a-window-muntin

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