Installing Aco channel drain.

16 May 2021
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United Kingdom
Hi everyone,

I'm building a patio from Indian sandstone slabs and have planned to install an Aco RainDrain channel drain at one end of it (see drawing). The fall is 1:80 towards the drain. The drain will be about 3.3m long. My question is do I need to have a fall on the aco drain? I wasn't planning to have a fall across the patio only towards the drain. Can someone give some advice on how this should be done? I guess I could put a small fall on the drain itself and not the patio??

Many thanks,


Aco Drain.PNG
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Recommended fall over 3m is 15mm and 20mm on 4 metre run, so a fall of 20mm will be adequate for the ACO drain.
I would still put a fall on the patio towards the drain side.

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