Does anybody knows a good translation for "unsanded grout" to Spanish? I am reading some kind of recipe to make Chalkboard Paint that implies mixing paint and "unsanded grout". I would like to buy it in my country (Argentina) but I simply do not know how to ask for it. I do know that it is some kind of powder that is use in constructions and stuff like that. The context is: "Measure out your paint and grout. The unsanded grout is a fine powder so be sure to work in a well ventilated area." Thanks!