What is sharp sand vs building sand?

Sharp sand and building sand differ in particle size and serve distinct roles in paving work. Sharp sand contains larger, more angular grains that lock together firmly, making it the preferred choice for bedding layers beneath block paving, flagstones, and setts. Its texture provides a stable, durable base that resists settling and movement under load. Sharp sand is also mixed with cement to create mortar for jointing between pavers and for laying brick or stone.

Building sand, also called soft sand or concreting sand, has much finer particles and a rounder texture. It works well for general groundwork, filling voids, and pointing mortar on vertical surfaces where a smoother finish is needed. Its finer grain does not compact as securely as sharp sand, so it is unsuitable as a primary bedding material for heavy-duty paving applications.

For paving contractors in Cheltenham, specifying the right sand grade is essential. Using building sand under pavers invites settling and uneven surfaces, while using sharp sand for general fill wastes material and cost. Reputable paving work requires both: sharp sand as a stable bedding layer and building sand for secondary applications. Suppliers typically stock both grades separately, so contractors must order according to the job specification.