Came onto a job where the previous guys skimmed with topping before floating the walls. Since topping compound has no glue and bad bonding properties and I need to float these walls, should I a) coat all the areas with that pink plaster bonding adhesive OR b) simply prime all the walls, float, skim,sand?
liability is void here. I'd sand the piss out of it, dust it, dust it with a damp towel and then put a good coat of quality primer on it. wait a couple of days poke your wall with a nail and when you back it out the the adhesion integrity can be viewed. It should pull out without taking paint with it.