I have lifted my downstairs toilet lino (all 3 layers of it) and was left with an concrete floor thats slightly rough. Plan is to lay some LVT as its very thin. So after doing a bit of research and what is readily avalible on my area I was thinking of doing the following apply mapei grip plus Lay mapei Ultimate Leveller 1210 (2/3mm) Is it best practice to paint on a DPM, if so when in the process is it best to apply and any product recommendations.
