Although oven porcelain enamel is a durable and heat-resistant surface material, it isn’t damage-proof—it can scratch, crack or chip when exposed to hard, sharp or heavy objects. As unrepaired damaged areas can continue to flake or chip, it is necessary to repair damaged porcelain immediately to protect non-damaged surrounding surfaces. In most cases, repairs usually only require the use of a colour-matched, water- and heat-resistant appliance porcelain enamel repair paint for scratches and narrow cracks or filler and paint for wide cracks and chips.
- Skill level:
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Things you need
- Lint-free microfiber cloths
- Appliance porcelain repair kit
- Acetone (optional)
- Containers (optional)
- Thick fabric or carpet (optional)
Unplug your oven and wait for it to cool completely if not already cool to the touch.
Sand down damaged rough or sharp edges with damp sandpaper.
Suck up loose porcelain particles, sand and any other debris with a vacuum, wipe the area with a damp lint-free microfiber cloth and air-dry 30 minutes.
Shake the bottle of enamel paint from your repair kit for one to two minutes to mix the paint thoroughly, add coloured tint (if not already tinted) and shake again.
Brush the first coat of paint into the scratch or narrow crack, using the brush from the repair kit. and wait between 20 to 45 minutes.
Remove any excess paint from non-damaged surfaces with acetone and a cloth if necessary and wait an additional eight to 12 hours before use. Repeat if additional coats are needed.
Unplug your oven and wait for it to cool if necessary.
Sand down damaged rough or sharp edges.
Vacuum the area, wipe with a damp cloth and air-dry 30 minutes.
Combine and mix thoroughly your repair kit’s compound filler ingredients in the kit’s mixing tray or a separate container. Mix half to start or mix all and store half in the freezer in a separate sealed container until needed.
Apply the filler in a light coat inside the bottom of the chip, wait 40 to 60 minutes for the filler to harden and apply a second coat. If additional coats are needed, remove the frozen filler from the freezer, wait 10 minutes and apply additional coats, or mix more filler and apply to the chip.
Sand the filler smooth even with the surrounding surface with fine sandpaper and vacuum up any loose debris.
Brush or spray enamel paint onto the filler and wait 48 hours before use and at least five days before cleaning.
Tips and warnings
- Hire a porcelain repair specialist to repair large damaged areas.
- To repair a vertical surface, lay the damaged part or oven—with help from another person as needed—on its side on thick fabric or carpet with the damage facing up.
- If using spray porcelain enamel paint, spray lightly approximately 6 inches from the surface, using a short, back-and-forth motion.
- Always wear safety gear, such as a mask, safety goggles and gloves, and work in a well-ventilated area to reduce upper respiratory, eye and skin exposure to the poisonous ingredients in porcelain repair products that can harm or even kill humans and pets.
- Seal the paint or filler container immediately after each application to reduce the amount of toxic fumes in the air.
- Never work around a hot burner or smoke as fumes can ignite.
- Don’t use abrasive cleaners on the repaired area.
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