RIW Ltd
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Structural Drainage System
Double Drain can be used in conjunction with a primary waterproofing system, or on its own, to isolate the structure from the surrounding soil. The product is designed to relieve hydrostatic pressure, by promoting the flow of ground water away from the face of the structure to land drainage.
Double Drain can also be used to provide excellent protection to a primary waterproofing system, against backfilling and mechanical damage.