I recently had a new gas boiler fitted. When they were doing it, the chaps agreed to chase out the plaster and run part of the pipework in the dry-lined wall, so that I can cover over it later and don't get ugly pipes/boxing running down the wall. When they did it, they wrapped the gas pipe in yellow tape down the entire length that will be buried. I'm not entirely sure why they did this, my guess is so that the copper doesn't react with the plaster when the channel is filled.
I now need to do something similar with water pipes. The questions is do I need to do the same thing, i.e. wrap them in tape where they will be buried? Also is there a particular kind/colour of tape I should use for a water pipe? To my eyes, the stuff they used for the gas pipe looks just like electrical insulation tape.