Dimple board is a protective sheet made of high-density polyethylene (HDPE). It is lightweight, flexible, strong, durable, and non-toxic. Dimple boards are used for:

• Protecting the waterproofing membrane on basement walls
• Separating the retaining wall from the earth, thus protecting the wall against water and humidity
• Relieving hydrostatic pressure
• Extending below-grade waterproofing membrane lifespan
• Providing an efficient and cost-effective drainage plane
• Protecting a foundation from water intrusion
• Eliminating the need for costly full-height gravel
• Preventing moisture from passing through
• Allowing a wall to breathe, allowing moisture to condensate outward so it falls by gravity to a drainage system