Waste Pipe Outlet Beneath Damp?

[tileman17]

Hi guys,

Im curently fitting a bathroom in a bungalow, at the moment im onto installing the new resin shower tray none easy install type which sits on a bed of mortar directly onto the concrete floor.

My question is regarding the waste, with the tray sitting on the floor I'll have to chop into the floor for the shower trap and chop a channel for the 38mm waste pipe, but to keep a fall this means exiting through the external wall about a brick depth beneath the DPC level into the drain.

Is this OK to do? Or will I get issues with damp traking through from this pipe? Or should I just wrap the pipe in some visqueen to keep it from touching the damp brickwork?

Cheers

Steve.

 

[mater]

can you not pick the tray up a little, we usually lift them about 3" to get the trap and fall in

 

[tileman17]

Customer wants it flush, OAP so I suppose lifting legs up is a strain.

Personally I cant see it being a problem, the damp tracking up a plastic pipe I mean. I'll probably go with just wrapping the section that's inside the brickwork with plastic just to make sure.

Was just interested to see what others thought.

Cheers.