Water drainage is misunderstood by many homeowners, builders, YouTube personalities and building inspectors, if my email ...
So, who should consider using sand to lay under pavers? Sand is an excellent ... Gravel also has excellent drainage ...
The clay layer under the ... place 4-inch drain tile at the bottom of a foundation. It should be placed on top of 4 inches of coarse gravel. This gravel should be free of any sand or fines.