Thanks for the heads up on 'Pipe Shield' product. Had water bubble-up in laundry room and in sheer ignorance called City Sewer Dept. They sent out 3 guys and a TV camera device which they dropped down the sewer line access giant valve which oddly is in the garage. This method identifies the cause of water coming up from the floor drain. The problem was being caused by the roots of the big, old, poplar tree across the street on the City boulevard. The City then brought in a gia-normous roto roter device which rotated through the underground pipes for two days. Apparently tree roots will cause mini slits in pipes to wind their way to a source of water.
We were surprised that there was no bill, no charge, no fee, no plumber etc.
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