Yes another PVA debate......
I just wondered how you all know when and where to use PVA, back to basics I know but a little patience would be appreciated.. I mean I know a plasterer just knocks up PVA until its about 4/1 and uses 2 coats of that in all indoor plastering. Say if you were plastering a ceiling, I think its 5-1 to kill the suction and then 3-1 for adhesion and hit when tacky. How do u actually know when to use thicker mixes. The other day the bloke I was working with scraped of all the wallpaper and then put 1 coat of 3-1 (pva-water) onto the wall and bonded over it but then again he PVA'd a low suction wall and applied hardwall in which i told him was wrong, so it shows people just throw PVA on and assume that will work...
Does everyone have certain mixes for certain situations?
Say if you had to skim over a painted wall... I mean this has little suction because its almost sealed already, would you use thistle bond it/WBA for the painted walls or 1 coat of say 2-1 (pva-water)
Thanks
I just wondered how you all know when and where to use PVA, back to basics I know but a little patience would be appreciated.. I mean I know a plasterer just knocks up PVA until its about 4/1 and uses 2 coats of that in all indoor plastering. Say if you were plastering a ceiling, I think its 5-1 to kill the suction and then 3-1 for adhesion and hit when tacky. How do u actually know when to use thicker mixes. The other day the bloke I was working with scraped of all the wallpaper and then put 1 coat of 3-1 (pva-water) onto the wall and bonded over it but then again he PVA'd a low suction wall and applied hardwall in which i told him was wrong, so it shows people just throw PVA on and assume that will work...
Does everyone have certain mixes for certain situations?
Say if you had to skim over a painted wall... I mean this has little suction because its almost sealed already, would you use thistle bond it/WBA for the painted walls or 1 coat of say 2-1 (pva-water)
Thanks