alright mate to be honest i just use it on everything cant really go wrong i think on plasterboard id use a 2-1 mix and let it almost dry to a tacky feel but like i say im only teaching myself and aint messed up yet on high porus sufaces i normally apply a coat of pva leave untill completly dry then apply another coat and skim whilst the pva is still wet
if anyone would like to correct me please feel free
tony do you have a home email if you do do ya wanna email it to me
Hi mate, you shouldn't really pva plasterboards there designed to just skim straight on to. You might find that if you pva it you're skimming will go a bit jelly like which will make it more difficult to use. hope this helps mate.
i have heard that you dont need to pva plasterboard but having done it myself i aint had no problems with the skimming and i assume that if the plasterboard has been wall papered its probably been put up the oppisite side to the plastering side ie the brown side not the grey would there still not be a need for pva before skimming?
If its the brown side out mate you shouldn't by rights plaster it but to be honest it doesn't make to much difference. If the boards are old your skimming can go off quicker than usual but personally i still wouldnt pva although i know plasterers that do but again it can affect the way your plaster goes off. It's just trial and error unfortunately mate! If the paper on the front of the boards is damaged we normally just wet it down a bit before skimming but as i said i personally wouldn't pva on straight on to plasterboard!!