Vitreous china
The one bathroom surface where the manufacturer permits a soft abrasive. The fittings around it are what you have to protect.
Precautions
- Check the manufacturer's instructions
- Rinse thoroughly afterwards
In detail
Vitreous china is the glazed ceramic that toilets and basins are made from, and it is unusually robust: the manufacturer describes it as scratch- and abrasive-resistant with a surface that will not stain or fade. That produces a permission almost nothing else in a bathroom gets — soft abrasive cleaners may be used when necessary, while strong abrasive cleaners will scratch and dull the surface. That permission is narrow: the blanket rule people carry around — never use an abrasive in a bathroom — is wrong here and right almost everywhere adjacent to it. The real fragility is the hardware. The same guidance says to wipe splashes of cleaner from plastic or plated surfaces immediately, and to use toilet bowl cleaners on the inside of the bowl only: the china tolerates the cleaner, the seat hinges, the plated waste and the tap next to it do not. In-tank cleaners are excluded outright because they can damage the flush valve and other working parts, which is a mechanical failure rather than a cosmetic one and happens out of sight. Scale also happens out of sight: deposits clog the rim holes and trapways, so a toilet that flushes poorly may have a water problem rather than a hygiene one.
Properties
Sensitivity
- Acids
- Not known
- Alkalis
- Not known
- Chlorine bleach
- Not known
- Heat
- Not known
- Abrasion
- Sources disagree
- Porous
- Not applicable
“Not known” means nobody has established this, not that the material is unaffected.
What works
Mild cream cleanser is safe on, in specific conditions, Vitreous china
Safe only in specific conditions
This is only appropriate within specific limits. Outside those limits, no claim is made.
Only within these limits:
- SOFT abrasive cleaners only, when necessary — strong abrasive cleaners will scratch and dull the surface
- Toilet bowl cleaners on the inside of the bowl ONLY
- No in-tank cleaners at all; they can damage the flush valve
- Wipe splashes off surrounding plastic or plated surfaces immediately
An unusually permissive clearance, and it is specific to the glazed china rather than to bathrooms generally: the manufacturer describes the material as scratch- and abrasive-resistant with a surface that will not stain or fade. The fittings around it are the vulnerable part.
Precautions
- Check the manufacturer's instructions
- Rinse thoroughly afterwards
Evidence
Supported
Sources
Care & Cleaning: Toilets or Lavatories Made of Vitreous China
STERLING (Kohler Co.) · Manufacturer documentation
Relied on for: That soft abrasive cleaners may be used when necessary while strong abrasive cleaners will scratch and dull the surface, that toilet bowl cleaners are for the inside of the bowl only, that in-tank cleaners must not be used, and that splashes must be wiped from plastic or plated surfaces immediately. (states this directly)
Hacks and claims involving this
- Never use an abrasive in the bathroom Disputed
- Putting a cleaning block in the cistern Does not work
- The melamine sponge cleans anything Supported
Sources for this page
Sources
Care & Cleaning: Toilets or Lavatories Made of Vitreous China
STERLING (Kohler Co.) · Manufacturer documentation
Relied on for: That soft abrasive cleaners may be used when necessary while strong abrasive cleaners will scratch and dull the surface, that toilet bowl cleaners are for the inside of the bowl only, that in-tank cleaners must not be used because they can damage the flush valve, and that hard water deposits may clog rim holes and trapways. (states this directly)