do you need have a dmp type underlay on concrete floors or can you put 12mm green fibreboard squares down straight on to the concrete? am pricing a job and customer is adamant you dont need a dpm/polythene under these boards i am not 100% sure so after advice thanks chaps
dpm plastic underneath. Not much else you can do. Really annoying when customers wont take your advice that they are CRAP
stuck on the back is no good. It needs to be a continues barrier unless the plastic overlaps or sticks together? if not ,all the product will do is delay the failer by a few months.
