I would welcome any comments and advice on the technique known as "daylighting" in which soil near a tree is excavated using, as it has been explained to me, pressurized water and suction.
My basement needs waterproofing but an arborist has recommended that we not cut the roots of a large old nearby oak tree, which rules out hand excavating. My contractor is now proposing this "daylighting" techique, to be done by a specialist.
I'd appreciate any hints as to what questions I should be asking.
Thanks,
Chip C Toronto