Just after a little advice, I have two questions if thats ok (probably more to follow though). I have removed wall tiles and in places the skim coat has come off, revealing the backing plaster, and in other places removed the skim and backing plaster, and in other places its just removed the adhesive leaving the skim.
1) Where the the blocks (thermalite/celcon) have been exposed i am going to use bonding to bring it back up the level of the original backing plaster. Should i PVA before bonding, or will wetting be enough? I have had a few cracks where the bonding has dried out quick - despite wetting.
2) I will be skimming the entire wall eventually, should i skim the bottom half (where the tiles have been removed leaving the backing plaster) to bring it level with the old skim coat, then skim the whole wall in one, or should i just skim the whole wall, so the bottom half would have a bit more skim than the top half - since the top still has some skim left, and the bottom doesn't?
1) Where the the blocks (thermalite/celcon) have been exposed i am going to use bonding to bring it back up the level of the original backing plaster. Should i PVA before bonding, or will wetting be enough? I have had a few cracks where the bonding has dried out quick - despite wetting.
2) I will be skimming the entire wall eventually, should i skim the bottom half (where the tiles have been removed leaving the backing plaster) to bring it level with the old skim coat, then skim the whole wall in one, or should i just skim the whole wall, so the bottom half would have a bit more skim than the top half - since the top still has some skim left, and the bottom doesn't?