Minimum base layer thickness on compacted fill dirt for paver installation ? Retaining wall installed last year to level ground around pool. Fill dirt well compacted. No issues with water drainage or erosion from very heavy rain showers this past year. For this type of base, what is minimum base layer and thickness recommended Need to know roughly how much to lower the fill. Thanks Originally by u/sua_sponte_75 on Reddit: https://tinyurl.com/2avka5md