Plaster, or wall coating, is the outer layer applied to the walls of a building: it gives a proper resistance to mechanical stresses and/or to atmospheric agents, as well as a finish on an aesthetic level.

Sand is a fundamental element in the creation of plasters and Valli Granulati - thanks to the experience gained over the years - has developed specific recipes for both lime-based and cement-based plasters.

Valli Granulati has a highly equipped and modern laboratory that performs tests and quality controls.