Recent content by Olivier1981

Thanks for the drawing

I will squeeze it between 2 blocks at a lower level than the DPC then. It will act as a cavity tray and I will put my air blocks on the course above this.

I am 100% sure for the polyethylene sheet under the concrete ground cover, it is in the building regs Part C but you are right, it is not a DPM per se, maybe it doesn't have to overlap the DPC as for a concrete floor.

that's what it says in the regs for suspended timber floors : "concrete cover at least 50mm thick laid on at least 300μm (1200 gauge) polyethylene sheet with sealed joints, and itself laid on a bed of material which will not damage the sheet." I'm not a pro so I go by the books.

Hi everyone, I know there are many threads covering DPC but I could't find my answer. I am building an extension with an internal suspended timber floor. I poured a concrete cover on sand and Polyethylene DPM which I will overlap the DPC and then continue by sloping downward to the outer leaf...