Ceramic is one of the most popular materials for use in kitchen and bathroom sinks, as it is extremely tough very attractive. Unfortunately, even this tough material can sometimes be damaged, either by accidents where it has been struck by something heavy, by constant wear and tear, or by cracking along the sides. These problems seem like a disaster, as ceramic is not as easy to fix for an amateur as a stainless steel sink might be, but if you have some basic home improvement knowledge and can follow a few simple rules, repairing your ceramic kitchen sink can be done.
Step 1 — Preparing the Sink
In order to make sure that repairs have the best chance of sticking, use a drill to enlarge the crack and grind down the edges. This serves two purposes. Firstly, it smooths down the sides, removing any sharp edges (because ceramic can give you a nasty nick if there is an edge). Secondly, it makes the inside of the crack slightly rougher so that the fixing putty has something to bond with.
Step 2 — Buying a Putty
Since many people have ceramic kitchen sink or bathroom sink accessories, there is a market for products such as Milliput, a type of ceramic putty that is white and has a smooth finish. This brand, and other types of ceramic putty, can set under water and form a water-proof bond when dried. These putties form a seal as hard as the ceramic itself, so it should be as hard-wearing as the sink.
Step 3 — Applying the Putty
You should mix the ceramic putty following the instructions on the side of the packet. Once this is ready, fill the crack in your ceramic kitchen sink using a putty knife, or you can use a trowel if a knife is not available. Fill your crack as full as possible, pushing the putty into the corners of the crack and smoothing off the top as much as you can, leaving only a small amount above the surface.
Step 4 — Finishing the Job
Leave the putty until it is almost dry. Then use a little bit of water along with a sponge or clean cloth to smooth out the surface until it is completely level with the edge of the ceramic kitchen sink. You will now have to leave the sink to dry on its own for at least another 12 hours, perhaps more.
Once the surface is completely dry, you can use your cloth to polish over the finish and rub the edges into the ceramic side so that it is barely noticeable. The putty will not look the same as an older ceramic, but it is better than a crack.