If you re skim it and the current skim has dried make sure you pva the hell out of the wall otherwise you'll struggle even moreThanks reeves,
Well after a knackering day i cover about 12sqm of the conservatory. I'm pleased with most walls. But unfortunately I did the big wall first 1.8m x 4.2. It turned out ok but was a nightmare to keep up with the drying of the drying times.
Will see when it goes lighter but I can feel a few ridges in it and it's not as good as I hoped or even did on my course.
By the time I got the first coat on the mix started to dry, managed to whack that on but my arm was killing and by the time I finished that and smoothed out some trowel marks, I think I left it a bit too long for the first wet troweling.
Will have a think but may consider re-skimming if not happy and will mix fresh after the first coat next time and from doing the other walls I think I am a bit better at my timings.
Still got a few more bits to plaster too but that's a job for next weekend!
I have always done the other way round reeves, 2x weak coats to "feed" the surface, and a thicker one before skim to "stick" the skim on.......don't know if it matters as long as it is seals.......just commenting on different procedures.....If you re skim it and the current skim has dried make sure you pva the hell out of the wall otherwise you'll struggle even more
As bare plaster acts like a big sponge and takes all the moisture straight out.
I'd be inclined to give it a good 3 coats of pva starting with a strong mix letting it dry and getting weaker
Finally skimming when the last coat is tacky
Alternatively you could give it a couple of coats of Matt paint to seal it then a good coat of pva and skim again when tacky.
Even this time of year conservatories can be tricky for a learner
I'm sure either way works fineI have always done the other way round reeves, 2x weak coats to "feed" the surface, and a thicker one before skim to "stick" the skim on.......don't know if it matters as long as it is seals.......just commenting on different procedures.....
Never had a problem doing it other wayDo weak first so it soaks in, if you do strong first will just put a film on top off it and not control the suction as well