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LM
To be honest I didn't realise that this was as detailed as it's turning out to be. I thought that with us being so far behind over here I simply hadn't 'heard' of it yet! I'll now go and dig deeper and post in full the request I've received.have you any more details. i have never heard of a product called m54 screed but i wonder if m54 might prefer to a NBS clause. i can find out tomorrow but a bit more detail might help. for cold store floors there is often a screed underneath the insulation and concrete to protect the ground from permafrost issues. not heard it referred to as m54 though. standard sand cement is covered by nbs section m10 and calcium sulphate by m13 so maybe m54 refers to an application