Please refer to the attached ACO installation drawing number 22003.
The RainDrain B 125 channel should be laid into a concrete surround (minimum strength C12/15) with minimum thickness of 100mm x the full height of the channel less 50mm maximum thickness of asphalt/tarmac (Y2 dimension).
The RainDrain B 125 channel should be installed 3-6mm lower than the surrounding surface finish.
The “Y” dimension shown below indicates the full height of the channel (97mm) and Y2 indicates the maximum thickness of asphalt/tarmac (50mm).
Installation into Asphalt/Concrete:
Installation into Block Paving:
The polymer modified mortar referred to is readily available from most builder’s merchants, but this can be a standard sand and cement mix with a “SBR” additive.
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