A foundation system that offers both cost savings and excellent thermal performance. Insulslab is a complete system, based on ... a cast in-situ foundation system which comprises a series of interlocking expanded polystyrene (EPS) pods, forming a substantially rigid ‘waffle’ foundation system/slab. Steel fibre reinforced concrete (SFRC) is poured over the top of the Insulslab system to form the finished foundation. A patented and certified interlocking expanded polystyrene pod system, Insulslab, conforms to the technical guidelines of the insulation structural element, as set out within the BBA Certificate. read more