Is drainage absolutely necessary

[Danny174]

Hello Tony

I’m after a bit of advise if possible please, I am just about to extend my patio, the extended patio size will be 10m2 which is 4.05m wide and 1.8m long, I really want the patio to fall away from the house, however the issue I have is our lawn slopes towards the house from the other direction.

I guess my question is do you think if I dug a trench at the end of the patio and filled it with aggregates etc whether this would be enough to drain the water.

Thanks Daniel

[Tony McC]

Apologies for being late to this - had all sorts of health issues with angina during the heatwave and now an arthritic knee that is driving me mad with pain.


If you have reasonably well-draining ground, you could use a simple infiltration trench, as shown here.....

https://www.pavingexpert.com/drain14

[Bob_A]

That's what I've got on my 50m2 patio. You need to remove the pebbles every other year and clean them but it works for me.