Cavity Drain
by RIW
Cavity Drain R20 & R7 are used as internal cavity drainage membrane systems, to collect water entering the structure. Cavity Drain R20 and R7 are typically used in basements and sub-structures, to channel water ingress to a sump or collection point for disposal.
Cavity Drain R20 is a 1mm thick high density polyethylene (HDPE) profiled sheet, with 20mm high studs.
Cavity Drain R7 is a 0.5mm thick HDPE profiled sheet, with approximately 7mm high studs.
When designing Type C structures (as classified in BS8102:2009), the product applied correctly, Cavity Drainage Membrane is capable of providing the levels of protection required for Grades 1, 2 & 3 basements.
Specification Details for Cavity Drain (External Wall Components)
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that RIW is consulted before specifying.
Physical Properties
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| Product Type (?) | Sheets | |
Other
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| Uniclass (?) | Pr_20_85 Support and restraint products | |
Size & Weight
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| Thickness (?) | 0.5 mm | |
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