Hi
I've laid underground drainage under where my extension will be, some of it (all 110mm plastic) is close to the underside of the insulation, and there will be a slab poured on top of the insulation.
I've put pea gravel around it all and was planning on then blinding the whole base before laying the dpm and cracking on.
I've just seen references to encasing drains like this in concrete, have I messed up here? Really appreciate any advice on whether that's necessary with plastic as I know it was with clay.
Cheers
John
I've laid underground drainage under where my extension will be, some of it (all 110mm plastic) is close to the underside of the insulation, and there will be a slab poured on top of the insulation.
I've put pea gravel around it all and was planning on then blinding the whole base before laying the dpm and cracking on.
I've just seen references to encasing drains like this in concrete, have I messed up here? Really appreciate any advice on whether that's necessary with plastic as I know it was with clay.
Cheers
John
