January 2006
RIW Cavity Drain BBA Certificate Awarded
By:- Martin Radford, National
Sales & Marketing Manager The
British Board of Agrément has awarded Certificate
Number 05/4232 (First Issue) to RIW’s
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. It 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.
Copies of this and other RIW
products’ BBA certificates can be requested in
hard or soft copy (contact: technical@riw.co.uk)
and may also be viewed on the BBA’s website (www.bbacerts.co.uk).
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