Due to a mishap (!) of drilling into a waterpipe that is recessed into our kitchen wall, a plumber had to come and dig out the wall to fix the pipe. This has left a hole in the wall that I now need to fill.
I want to make sure that I use the right filler as I don't want to do anything that will damage the pipes (corrode them?) and I want something that will mean that when the pipes heat up the filler does't get damaged as it will dry out.
Pic attached hopefully...
Advice gratefully received