I have worked with lads on stilts....i use 8x4 sheets on battens and crates,very crude and basic but I put on half as much again, a far better finish, polished up ahead of them and have done the mixing for the both of us. Not the sort of thing you can carry with you for the odd small job but all...
It will indeed Topbanana...There is no real hard fast rules to pva use ,as I say what your plasterer may do another may vary to...But invariably the plaster skim will take ok.
Errrrrr! Not so at all at all atall J B....In fact many spreads lay on one thick coat of render, particularly on a doorless windowless wall rule it off fill in the slacks rule it again and half an hour later float and devil it. Job done. Personally I like to lay on a tight coat immediately after...
Either or.... Every plasterer has their own idea of which ratio is best, if your spread knows his onions then you should let him at it and all will be well with the world!! :D
Its called blebbing, and can happen mostly if you have dampened down the bonding too much before skimming or not let it go off enough before skimming, nothing to worry about they will trowell out at the end.
Fair enough... :D If you go into John E. Strephens the Roofers merchants in Lenton Industrial estate( facing the multi plex) and ask for the number of Roy Foster, if indeed it is a roof related problem then you will be in good hands.
So as not to confuse the issue the method described above would as Freddie said be construed as a one coat as itv is done one straight on top of the other rather than being left for any period of time.
You dont and can not render the walls in a scratch coat and the next day a top coat ...for starters you would end up a very poor (financially) plasterer. :D The wall is coated and as you finish, it has taken up enough to apply a second but thinner coat which will rule nicely ...left an hour it...
No ulterior motive here J.b a section of wall within a whole perfectly rendered and skimmed house that has blown in exactly the same place on two occassions to a clinker block wall?
Has me stumped.!
And I could have given you the numbers of a couple of good roofers in Nottingham had you the good manners to have acknowledged the other posters with a little thanks.