A well-made concrete sink asks very little of you. Every Crete Collective sink leaves our studio fully sealed and ready for use, so day-to-day care is about protecting the finished surface — not maintaining raw concrete.
The goal is simple: clean the sink regularly, avoid abrasive tools, and do not let cleaners or heavily pigmented products sit on the surface for extended periods.
Everyday cleaning
For regular cleaning, use warm water and a small amount of mild soap with a soft cloth or sponge. Wipe the basin, rinse away any residue, and dry with a towel.
Drying matters more than people expect. Standing water can leave mineral spots, especially in areas with hard water, so a quick wipe-down after heavy use helps keep the surface looking even.
For most households, that is all the sink needs. There is no special concrete cleaner required.
Bathroom cleaners and mineral buildup
Vinegar, lemon, household descalers, and bleach-based bathroom sprays can be used when needed, as long as they are rinsed or wiped off after cleaning. These products should not be left to pool, soak, or dry on the surface.
For hard-water marks or mineral buildup, apply the cleaner, wipe the affected area, rinse thoroughly, and dry the sink with a towel. The issue is not brief contact — it is prolonged exposure or residue left sitting on the sealed finish.
What to avoid
Avoid abrasive scrubbing pads, scouring powders, steel wool, and “soft scrub” creams. These can physically wear down the sealed finish over time.
Do not leave strongly colored products sitting in the basin. Hair dye, dark cosmetics, heavily pigmented toothpaste, and similar products should be rinsed away rather than left to sit.
Avoid harsh solvents, paint strippers, drain cleaners, industrial cleaners, or any product that is not intended for finished bathroom surfaces.
None of this means the sink is fragile. It simply means the surface should be treated like a finished material, not a utility sink.
Protecting the sealed surface
The sealed finish is what protects the sink from normal bathroom exposure, including water, soap, toothpaste, makeup, cleaners, and daily use. As long as that finish is cared for properly, the sink should remain durable and easy to live with.
Do not apply aftermarket sealers, coatings, or refinishing products unless you have spoken with us first. Crete sinks are not shipped as raw concrete, and the wrong product can interfere with the existing finish.
If the surface is ever damaged, begins absorbing water, or changes noticeably when wet, contact us before attempting to reseal or repair it.
Frequently Asked Questions
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