what are some light mineral construction materials (spec gravity 1-1.4) suitable for indoor residential floors

Answer 1

I truly have no clue; but you did nudge an old notion I have kept. I once thought to do my floors in a Bar grade Poly, poured over any number of substances. A Kitchen might be various seeds? A family room, might be a collection of bar coasters? A Bath, might be small or crushed "Sea" shells? A bedroom might be fabric?

Thanks. I know I didn't answser your Q...forgive me, but you reawakened a notion of mine.

Steven Wolf