Evening all,
I have built an extension which is in lightweight blocks [Ytongs] which are fairly smooth. I am intending to two coat render 4/1 scratch [with or without waterproofer/SBR?] and 5/1 top coat. Now I have done a fair amount of plastering and some rendering but I want to get this right!
The more I enquire the more different approaches plasterers use! My main concern is the fact they are smooth [ish] there is no scratching on them so I know I will have to key them. But should I prime the wall or just wet it? And what additives should I use in which coat? I suppose its about 30m2 to do and the plastering sand is already here!
I have built an extension which is in lightweight blocks [Ytongs] which are fairly smooth. I am intending to two coat render 4/1 scratch [with or without waterproofer/SBR?] and 5/1 top coat. Now I have done a fair amount of plastering and some rendering but I want to get this right!
The more I enquire the more different approaches plasterers use! My main concern is the fact they are smooth [ish] there is no scratching on them so I know I will have to key them. But should I prime the wall or just wet it? And what additives should I use in which coat? I suppose its about 30m2 to do and the plastering sand is already here!