Due to the patio level being one brick course below the DPC, building control has suggested an ACO drain (or similar) along the full length of the wall to minimise splash back, something like this:
I should point out that the wall is a new cavity wall with a cavity tray, so splash back is not such a big concern.
Given that i will have a drain along the wall anyway, is it ok to have the patio slope towards this drain, i.e. towards the house? The alternative is to do the conventional thing and slope it towards the lawn. Pavingexpert recommends this for widths no more than 1.5m, but imy patio will be 4mx8m and that's a lot of water flowing straight onto the lawn! I realise i could have another drain along the lawn edge as well, but that would be excessive and ugly!
I should point out that the wall is a new cavity wall with a cavity tray, so splash back is not such a big concern.
Given that i will have a drain along the wall anyway, is it ok to have the patio slope towards this drain, i.e. towards the house? The alternative is to do the conventional thing and slope it towards the lawn. Pavingexpert recommends this for widths no more than 1.5m, but imy patio will be 4mx8m and that's a lot of water flowing straight onto the lawn! I realise i could have another drain along the lawn edge as well, but that would be excessive and ugly!