Thanks, forgot to mention that I first applied a thin coat of hardwall to all the wall and as soon as I finished that I went on to applying the full thickness to the feather edge back. Think I had read it on here that the thin first coat takes all beating from the high suction?
Newbie Question (go gentle…)
Had my second go at hardwall plastering a section of thermalite wall in my bathroom.
I applied 1 coat of GyPrime the night before, without watering it down (first mistake?). Next day I dabbed on 4 pieces of 9mm plasterboard and set some screed blocks on the...