1 · Sizes: 600x300x30mm Pavers. Applications: Can be laid directly over sand or crushed rock. Driveways, patio''s, commercial projects, roads, pool surrounds, flooring. Benefits: Sealing is recommended to protect from stains and also bring out the White in the Marble. Never fade, can be laid on sand, crushed rock or concrete.What size crushed rock for patio? - FindAnyAnswer 2020-5-27 · Best Crushed Stone for Patios. 1 1/2 inch and 2 1/2 inch Crushed Stone – Crushed stone gravel can be, granite, trap rock and limestone, depending on the particular quarry site. Crushed stone is produced by actually crushing the stone and then screening it to the right size.