Marshalls fairstone sawn and tumbled setts are a premium driveway project and come in two beautiful consistent colours fairstone sawn and tumbled setts have been carefully hand selected from an ethical indian sandstone source stones are sawn and then tumbled for a softer worn look fairstone sawn and tumbled setts should be laid on screeded sand with a kiln dried joint width of 3 5mm for certain driveway installations laying on a mortar bed may be more appropriate