evening all, got a job tomorrow, making good half a bedroom wall. originaly going to be s+c and multi, however builder and home owner have decided to use a sand and lime render followed by (this is the bit i'm not sure about) an n.h.l. putty mixed 1 day before!? the builder does alot traditional building and assures me it'll work, but i've not heard of it, i'm worried he's confusing his lime. any suggestions?