Marmoleum on sand cement screed

[ahearsum]

Can I lay marmoleum tiles directly onto a sand and cement screed? Or is it better to lay down a plywood subfloor on top of it? It will be a freshly lad screed by the way with water UFH.

 

[Ben-gee]

Self levelling onto the screed, to give a perfrctly smooth finish, then the marmoleum.