Does anyone know why? SuperSand Bond has the ability to expand and condense. This elasticity ensures that the paver joints avoid cracking and are properly filled at all times. Thus, it will also help prevent insect penetration and weed sprouting. SuperSand Bond should only be used when pavers or tiles are installed on a drainage bed system (stone dust, crushed stone, sand). It is not recommended when pavers or tiles are set above a concrete base.