I today finished off positioning the two layers of DPM, taping and tidying the corners. I had to place some additional pieces around the doorway area as I had to cut the main sheets to fit the shape around the brick pillars each side of the door. I overlapped and taped it all pretty thoroughly to ensure there are no breaks in the sheets.
I'm going to organise the ready mix concrete delivery for next Wednesday, the 8th of April. So this weekend will be spent finishing the preparation for then...more soon.