Hollow glass spheres are ideal for use in systems requiring lowered density and improved Filling characteristics. On a volume basis, Hollow Glass Spheres (Glass Microsphere) offer the lowest surface area of any functional filler allowing formulators, in many cases, to reduce their overall cost. Uses in the construction market include EIFS applications, insulative roof coatings, mastics and grouting materials. Cement Additives, Flooring, Grouts and Caulk, Paints and Coatings, Automotive and Marine Putty, Adhesives, Cosmetics, Plastics, Composites Etc. . .