What is the recommended bedding / base course for concrete slab paving?
Concrete slab paving can be installed “unbound” on a bed of sharp sand which should be approximately 25mm after final compaction.
Concrete slab paving can also be laid “bound” on a bed of mortar which should be approximately 30mm after final compaction. Slabs with plan dimensions greater than 450 x 450mm are normally laid using the “bound” method. Tobermore strongly advise against spot bedding as this can cause staining to appear on the surface.