Abrasive cleaners: Abrasive cleaners that contain harsh chemicals can stain, scratch, or damage the finish on porcelain sinks.
Though popular for being gentler alternatives to harsh chemical cleaners, baking soda, Borax, and even salt can harm the finish of your porcelain fixtures. As gentle as they are, these compounds are still abrasive and will scratch your finish, especially with regular use.
Porcelain is susceptible to scratches and chips that might expose the surface beneath, which makes it vital to avoid dropping heavy metal objects in it or using sharp metal around it. It's recommended that people use silicone pads or a stainless steel rack to help protect it.
For white porcelain only, bleach can be used to remove stains; never use chlorine bleach in colored or vintage porcelain, as it can damage the finish. For both white and colored porcelain, liquid oxygen bleach (such as hydrogen peroxide) is a good alternative.
Porcelain sinks are both beautiful and easy to clean. On the down side, it's a brittle material and easily cracked.
Porcelain sinks have an average lifespan of 20–25 years. While all materials take on wear and tear over time, porcelain sinks can be refinished to keep them looking brand new and gorgeous for decades.
Pouring boiling water is quite risky as it might lead to a steam burn or scalding. Another thing to keep in mind is what type of material you are pouring in into. If you have a porcelain sink, it is likely to crack due to the heat. All in all, pouring boiling water down your drain will only cause issues down the road.
If you are looking to avoid using chemicals altogether or if marks are particularly rugged, then cleaning with a Magic Eraser can help achieve the perfect shine with no extra product. 'Use a Mr. Clean Magic Eraser to quickly scrub your porcelain sink.
Baking soda creates a soft scrub that can tackle minor stains in a sink without marring the porcelain.
For both white and colored porcelain, liquid oxygen bleach—such as hydrogen peroxide—is a good alternative. It may take longer to work, but it's less caustic and more environmentally friendly. Pour the bleach product suited to your type of porcelain into a spray bottle.
Drastic temperature shifts
Like a lot of household objects or fittings, drastic temperature changes cause damage to bathroom sinks. Repeated temperature shock can lead to swelling and cracking of your porcelain and enamel.
You can use porcelain touch-up paint for hairline cracks, scratches or shallow chips in your sink basin without using a filler/repair compound.
The best way to keep your porcelain sink looking squeaky clean is with a light cleaning every so often. We recommend you use a gentle scrubber or a sponge, some dish soap, and a little warm water at least once a week.
Most refinishers use hydrofluoric acid to chemically “etch” a porcelain or ceramic tile surface in an attempt to make their coating “stick.” Hydrofluoric acid is so strong that it actually eats away the porcelain, creating “pits” and a rough area for the new coating to hold onto.
Glazed Porcelain: Keeping your glazed porcelain sink in shape couldn't be simpler. Use Soft Scrub with Bleach Cleanser or Soft Scrub with Bleach Cleaner Gel to free your sink of soap scum, dirt, and stains.
Lemon and vinegar are acidic products that must never be used to clean porcelain tiles. Neither should alkaline ones be used like bleach or ammonia. Even though Google might tell you that they are suitable as cleaning products, they are not. Always use a cleaning product with a neutral pH.
IMPORTANT: To avoid damage to porcelain surfaces, do not use soap-filled scouring pads, abrasive cleaners, steelwool pads, gritty washcloths, or abrasive paper towels. Preferred Method: Soap, water, and a soft cloth or sponge are suggested first unless otherwise noted.
The brown stain is from a large amount of iron in your water. It is closely related to simple rust that you see on metal, which is iron oxide. Your water probably comes from groundwater that filtered through rocks containing iron-rich minerals on its way to the well.
You can use Scrubbing Bubbles multi-surface bathroom cleaner on glazed ceramic tile, stainless steel, chrome fixtures, fiberglass, vinyl, glazed porcelain, glass, laminate, Corian, sealed granite and quartz surfaces.
Just a simple mixture of baking soda and vinegar will take away all gunk and stains that you could throw at your sink. I suggest making a paste in the sink, so you can best gauge how much you need, but just sprinkle baking soda over the entire bottom surface then drizzling a light amount of vinegar over top.
Porcelain kitchen sinks are heat and cold resistant
The good news is if you place a hot pan directly in a porcelain sink, you won't have to worry about any thermal damage.