Drainage Channels

[Mattash37]

Haha ok well here goes…
I’m laying a new Indian sandstone patio for a customer next week.
The entire garden runs slightly down towards the new build(!) house.
I’m creating 2 levels divided by a retainer made from sleepers.
( so lower area sandstone -9x4 metres, upper area levelled & turfed.
Would you install drain channels against the house & have the patio sloping slightly towards the house & run the water into a drain that way , or fit the channels against the sleeper retainer & send the water into one of the many drains present in the lawn ( new builds eh!)
Any help would be appreciated.
The garden is pretty damp hence why I’m gonna using aco channels rather than just gravel!!

 

[richard2810]

Put the drain against the house. Sleepers rot and move over time. You can also more easily pick up the drain for the downpipe I imagine.

 

[Mattash37]

That’s true about the down pipe but the idea is the water wouldn’t get to the sleepers in the first place no???

 

[freddiemercurystwin]

As a 'professional' you should be well aware that using any of the existing drains is not permitted.