How crucial is the 6 inch minimum level of the DPC?
We have a new chemical (cream) DPC which is 4 inches above some pebbles at the front of the house. Clear the pebbles and it is six inches above the ground.
For a 3 foot portion of the side wall, the DPC is 4 inches from tarmac - then the tarmac slopes down, and the horizonatal DPC level rises well beyond six inches to keep even with the internal floor.