Keeping the surface of your toilet clean is important because it doesn't allow any bacteria to grow. Toilets are factory porcelain glazed. Sometimes though, your toilet's glaze may develop scratches from heavy usage or accidental contact with some sharp object. Repairs are inexpensive and may range from fixing a surface scratch to repairing a deeper scratch or gouge in the porcelain glaze finish. Minor, surface scratches may be repaired with eyeglass lens repair fluid, which is similar to crazy glue. Gouge marks or deeper scratches will require a specialised three-part glaze repair kit.
Inspect the area that contains the scratch. If it is a small scratch, just barely visible, then you can use eyeglass lens repair fluid to make your repair.
Apply the eyeglass lens repair fluid by gently squeezing a small amount across the surface of the crack. Apply with a fine bristled brush, such as the kind used on model cars during painting.
Gently heat the area with a blow dryer. The eyeglass lens repair fluid is very similar to crazy glue, but is better suited for fine cracks. It won't overflow as quickly.
Apply more than one coat if needed, drying it for at least 20 minutes in between coats. Once hardened, this repair will be just as hard and durable as the original porcelain glaze.
Separate the components of your glaze repair kit. The kit consist of filler, hardener, spray enamel and various grits of sandpaper. These kits are used for deeper scratches or gouge marks in the porcelain finish of your toilet. Mix some filler and hardener in the kit's enclosed tray using the wooden stir stick. Ratios vary depending on the manufacture. Read the directions for specifics.
Apply the filler using your small, plastic putty knife. Just apply enough to have a little extra build-up. Let it dry for about one hour.
Sand the dried area with the roughest grit sandpaper first. Then sand in layers, each time with a finer grit sandpaper. If you sand too much, apply more filler and hardener mix and repeat the sanding process.
Hold the spray enamel about 6 inches away from the porcelain surface and spray on the finish by slight overlapping strokes, from left to right, and then back. Wipe away any runs and respray. Let it dry for 48 to 72 hours before using the toilet.