concrete base

[lilleville]

Hi. i'm installing a concrete base under a lilleville summer house. The ground slopes, so on 2 sides we'll need retaining walls and on 1 corner we'll need to build the ground up. The damp proof membrane will go between the type 1 and the concrete, but how do you stop the damp getting to the concrete when you backfill up to the level of the concrete so it is flush with the ground? Does it lie flat with the formers for the concrete edges on top, and then when you move the formers you fold up the dpm and backfill up to it and then cut it off level with the ground? How would you do it?

Thanks

LV

 

[Biguns]

Think you are in the wrong forum