Q. We have a home built in 1967 with black slate flooring on the interior and exterior porch and terrace. We have had some restoration done by a local stone mason but we are not happy with the finish. Even when last sealed it does not have the... Read More

No. Be careful, the idea of an impregnator is to make the stone water resistant, not waterproof. In order to make the stone waterproof we would need to completely block the pores of the stone. If this is desired I would recommend a topical coating. Read More