materials library / classes / stone and earth
NEURODESIGN® · MATERIAL CLASS · STONE AND EARTH
Lime and clay plaster
Mineral plaster applied wet and finished by hand. Vapour open, matte, with a hand-applied texture that has no repeat at all.
Decisive attributes
The attributes that most determine how this class behaves and how it is experienced. No values are shown, because a value belongs to a product and not to a class. Two products of the same material can differ from each other by more than the material differs from its neighbours.
Typical application
Walls. Ceilings. Spa.
Worth watching
Hygric buffering by clay plaster is well established as a physical behaviour. Whether that buffering produces a measurable human outcome at realistic wall areas is a separate question with no corpus record behind it.
Evidence
No record in the research corpus tests human response to this material class. Its physical behaviour may be well understood and its properties may be entirely predictable from the attributes above. That is a different thing from evidence that a person responds to it, and this library does not convert one into the other. The absence is shown rather than filled.
Outcomes it could bear on
Outcomes whose material levers overlap this class. This is a structural relationship in the ontology, not a finding: it says the property is relevant to the outcome, not that this material produces it.