Does expanding foam corrode copper pipes?
This is mainly for the benefit of “Not Eckyl ” Copper piping gets eaten away very quickly when in direct contact with cement- based products, I have had to replace quite a few in my 30 years as a C/H engineer, when an idiot builder poured concrete directly on top of copper piping. The worst-case scenario was in England when an entire estate of 600 houses was affected. The families had to be re-housed while all the floors were dug up with pneumatic drills so that they could be re plumbed. When in doubt as to whether to use a product or not, err on the safe side and use proper insulation designed for copper pipe.
