Foamit is used in roads and streets instead of crushed stone utilizing its lightness and thermal insulation properties. The bulk density of the foam glass course is only one-fifth compared to that of crushed stone, but it corresponds to the deadweight of coarse sand.

Foamit can be used to construct steep embankments and dykes even with escarpment slopes. It is a significant advantage in building bridges, as backfill for retaining walls or to ease back pressure on dyke-stabilized areas.

For thermal insulation a layer of foam glass is equivalent to a layer of sand up to four times thicker. This is a real cost saving and reduces the amounts of excavated material when repairing frost- or otherwise- damaged streets. During road construction it is possible to undertake one side at a time, because Foamit foam glass aggregate particles have a high angle of friction.