Which Sub Base for Patio?

Stone aggregate comes in a variety of sizes, but most experts recommend 3/4-inch gravel for paver bases. Crushed stone makes a solid paver base because it allows water drainage and is easy to work with. Like sand, crushed stone comes in several varieties.

What is the best sub-base for a patio?

' The most common granular aggregate sub-base is DoT (Department of Transport) Type 1 and Type 3 Limestone. They are both crushed stone: Type 1 has a maximum permitted top size of 63mm, graded down to dust; and Type 3 is an open-graded 40mm unbound mixture with a reduced amount of fines.

Do you need a sub-base for a patio?

Although not always required for patio projects, sub-bases are vital when laying block paving in order to prevent settlement. ... Although unsuitable for use under areas of heavy traffic or commercial projects, these materials should be perfectly suitable for patios and standard driveways.