Paving repair: there are some reasons when you get uneven surface of pavings. The most common reasons are improper foundation job or tree roots grown underneath. Both driveway and walkway, we recommend to fix it for safety reason.
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The owner was wondering if there was proper foundation for driveway such as a foot deep gravel and sand on top.
There was only thin layer of sand underneath of paving stones (on top of clay soil ground).
Finish, put back paving stones.
Spreading sand for leveling on top of a foot deep gravel.