The Brew Cabin

I had a sunroom installed on an existing concrete slab patio. It unfortunately is at the low end of my back yard and runoff ends up seeping into the sunroom when an extremely heavy rain occurs. Is there a way to create a drain at the low point in the slab before it reaches the sunroom wall?

Tony Jackson

Hi Tony,

the usual remedy for this sort of problem is to cut a channel in the concrete slab and install either a linear drain or some form of kerb channel, such as the Keychannel by Marshalls, and direct that to the nearest gully.

You'll need a Power Saw to cut through the concrete, and the linear drain or channels will need to be bedded on concrete or mortar to a level of around 3mm below the concrete surface. You can then patch in around the newly installed drain/channel with fresh concrete or a grano mix.

HTH