Westover Landscape Design, Inc. Hello Nrolli7183, thanks for your question. We used 2 inches of stone dust on a base of 4 inches of gravel. Good luck with your project. Robert

nrolli7183 thanks

Westover Landscape Design, Inc. Thanks for the questions Rae3434, we pitched the entire patio to the top right of this image, away from the house and towards the driveway and street. Beyond the gate, the grade changes and goes down two steps - about 14 inches to the driveway and garage grade level. Also this is a "soft base" with stone dust rather them cement joints which helps drainage and permeability. Thanks for asking. Robert

Annie Thornton This looks like it could be Bluestone.

Westover Landscape Design, Inc. Yes Annie, that is bluestone.