Hi,
Im currently re-tiling my kitchen floor, and ive noticed a channel which has cracked going from the central heating across the floor to a radiator, it has been screeded/ concreted over but has cracked due to the heat from the pipes, so i have dug up the channel (2inch deep) to find 3 hot water pipes underneath. So my question is, before i put screed / concrete back in the channel what do i put over the pipes to stop this happening again.
thanks