D
Dumbo
I dont know this as I am not familiar with mapei products but I think it's worth checking with mapei that 12mm over the pipes is sufficient ..
Discuss Mapei renovation screed primer in the Tile Adhesive / Grout Advice area at TilersForums.com.
Reply to Mapei renovation screed primer in the Tile Adhesive / Grout Advice area at TilersForums.com