Should I provide a frost-free depth?

Because of the flexibility of the sheet, and because the gravel is not bound, frost heaving has no effect on the ECCOgravel surface.

When designing foundations for asphalt and concrete paving blocks, one must always remember to take into account that no water remains in the zone where frost may occur in the foundation. After all, in case of frost this could lead to the break-up of the asphalt or concrete surface. This is why the foundation depth for such materials is so substantial. The depth of the foundation for ECCOgravel grids is therefore only determined by the loads the surface will need to endure.