How do I look after a ceramic or Belfast sink?
Removing the grey metal marks that are not scratches, dealing with limescale on glaze, and the honest position on chips.
- Difficulty
- beginner
- Time
- 20 min
- Read
- 3 min
Short answer
The grey lines in a ceramic sink are almost always metal transferred from pan bases onto the glaze rather than scratches, and a cream cleaner takes them straight off. Limescale needs an acid, not abrasion. Chips are permanent, and a protector mat is the only real prevention.
A ceramic sink has a fired glaze that is harder than stainless steel and completely non-porous, which is why it neither scratches nor stains in normal use. Almost everything that looks like damage on one is either metal deposited on the surface or limescale sitting on it — both of which come off entirely.
What you'll need
- Cream cleaner
- Soft cloth or non-scratch sponge
- Limescale remover or white vinegar (optional)
- Sink protector mat (optional)
Step by step
- Recognise the grey marks for what they are.Fine grey or black lines in the bottom of a ceramic sink are metal from pan bases, cutlery and cast iron, transferred onto the glaze because the glaze is harder than the metal. They are on the surface, not in it.
- Remove metal marks with a cream cleaner.A mild cream cleaner on a damp cloth, worked over the marks with light pressure. They lift completely. This is the single most satisfying five minutes in kitchen cleaning and most people never realise it is possible.
- Treat limescale with acid.White vinegar or a limescale remover left to work, then rinsed. Around the taps and the waste is where it collects. Do not scrub it off — the glaze is hard but the tap finishes around it are not.
- Do not use abrasive powders or scourers routinely.The glaze is very hard, but a heavily abrasive powder used constantly will eventually dull it, and once a glaze is dulled it holds dirt. Cream cleaner is enough for everything a ceramic sink does.
- Rinse rather than soak.Ceramic does not stain, but a sink full of standing water in a hard water area dries into a scale ring at the water line, which is far more work than a rinse.
- Accept that chips are permanent.A dropped pan can take a chip out of the glaze, exposing the porous fireclay body underneath. Touch-up kits exist and are honest short-term repairs — they seal the exposed body and they never quite match. Nothing restores a fired glaze.
- Fit a protector mat, and lift it out to dry.A wire or silicone mat in the bottom of the bowl prevents chips and metal marks in one go. It has to be lifted out and dried, or it becomes the least hygienic thing in the kitchen.
- Look after the worktop end grain next to it.On a Belfast sink the worktop runs up to the sink and stops, leaving a cut edge facing the wettest spot in the kitchen. On timber that edge needs oiling far more often than the rest of the top; on laminate it needs sealing properly.
Keeping on top of it
- Rinse and wipe the bowl after use (daily)
- Cream cleaner over the whole bowl to lift metal marks (weekly)
- Limescale treatment around the taps and waste (monthly in a hard water area)
- Re-oil or reseal the worktop end grain next to a Belfast sink (every few months on timber)
Questions people ask
How do I remove grey marks from a ceramic sink?
They are metal transferred from pans and cutlery onto the glaze, not scratches. A mild cream cleaner on a damp cloth removes them completely with light pressure.
Can a chipped ceramic sink be repaired?
Not invisibly. Touch-up kits seal the exposed fireclay body and stop the chip getting worse, which is worth doing, but nothing restores a fired glaze. A protector mat in the bottom of the bowl is the only real prevention.
Do ceramic sinks scratch?
The glaze is harder than steel, so what look like scratches are nearly always metal deposited on the surface and they clean off. Sustained use of heavily abrasive powders will eventually dull the glaze, so a cream cleaner is the right product.