Jim Wilson

If you’re building on a tight lot where the soil retention system serves as the back of the foundation forms, the waterproofing must go on before the concrete is poured. MiraPly self-adhering blind-side waterproofing can make a difficult job just a bit easier. According to the maker, the thermoplastic polyolefin membrane is coated with a butyl adhesive that forms a permanent bond with the poured concrete. It comes in two formulations: one for vertical applications and another for horizontal (underslab) applications. The manufacturer declined to provide pricing. Carlisle, 888/229-0199, carlisle-ccw.com

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