Hello,
I'm in the process of renovating a bathroom and as I plan to move the floor drain, I need to cast over the old floor drain hole. (Basement underneath)
As I understand it, you should use low-alkaline mortar, etc., on light concrete but can you cast over a hole with mortar?
Otherwise, I was thinking of using EPS concrete, but I find it difficult to determine if it is low-alkaline or not.
Does anyone know or have tips on what I should use?
Regards
