Slab on Grade
Monolithic slab-on-grade foundations - Super insulated for LEED Homes & Passive House
...Concrete's environmental impact: Yes, building a slab-on-grade means pouring concrete, and concrete has a significant environmental footprint. That's why we strongly recommend opting for reduced-carbon, green(er) concrete options. Look for those that use supplementary cementitious materials like fly ash, slag, graphene...