Can sandstone paving be laid on sand?
2021-1-8 · Seven steps to laying sandstone slabs on concrete. Mark out the area you are paving. Dig a bed that''s 105mm deep. Add a 50mm sub-base layer. Mix the concrete, to a ratio of one part cement to six parts ballast. Add a 30mm layer of concrete mix. Lay the paving slabs, leaving 8 to 10mm spaces between them. Fill the joints between the slabs with ...