Ontario Stone Supply | Stone Supply & Garden Centre | 495 ...
Ideally 4"- 6" of ¾ crush gravel put down in 2"-3" lifts and tamped will be sufficient for a normal patio. Using .5" -1" of screenings on top will allow you to lay the stone level or with a small slope away from your house. Click Here for a link to the DIY network explaining fully how to build your own patio.