The supporting layer — protecting the waterproofing membrane during backfill, and managing water where landscaping meets structure.
A waterproofing membrane is most vulnerable in the hours after it is applied — when backfill goes in, when soil is laid over a podium, when a retaining wall is buried. Dimple Sheet and Drainboard exist for that moment and the decades after it: shielding the membrane from mechanical damage, and giving water a deliberate path away from the structure instead of a slow one through it.
A studded protection layer placed against the waterproofed face of a retaining wall before backfill. It absorbs the mechanical punishment of compaction and stone, keeps the membrane intact, and creates an air gap that lets any incidental water drain vertically rather than sit against the structure.
Used where soil sits over structure — planters, flower beds and landscaped podiums. Drainboard separates the growing medium from the waterproofing below and gives irrigation and rainwater a controlled route to the outlet, so the bed drains rather than holds water permanently against the slab.
Below-grade and water-retaining structures under sustained hydrostatic pressure.
Explore →Wet areas, terraces, podiums and facades — the everyday surfaces where most buildings begin to leak.
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