Cavity Drain

RIW Cavity Drain is an internal tanking drainage system used to collect water entering the basements and sub-structures and channel it to a sump or collection point for disposal. RIW Cavity Drain is a 1mm thick high density polyethylene drain board with 20mm studs used in situations where site conditions or structural design make it difficult or impossible to use traditional tanking methods.

When designing Type C structures (as classified in BS8102:1990), the product applied correctly, is capable of providing the levels of protection required for grades 1, 2, 3 & 4 basements.

Typical Uses

• Internal Tanking of basements
• Sub-structures & retaining walls

Features & Benefits

• Easy to install to most substrates
• Applied to Concrete, masonry, sheet and concrete
  piled walls
• Can be applied to wet substrates
• Complete water and water vapour barrier
• High compressive strength
• Chemically resistant

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