Anyone come across a skim coat plaster that dries uneven, is very hard, and difficult to prime. The primer dries almost on contact so is tough to brush and roll. This is the second time we've followed this plastering crew on a job. We tried both Freshstart and CA ProWall Primer with similar results. When the plaster dries the color is very irregular and looks wet in spots.
There are far less imperfections than the typical skim coat, but what a pain to prime.
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New plaster is extremely porous, much more than drywall. If it's thoroughly dry and you still get 'wet' looking spots then the plasterer has probably used bonding (pva/builder's adhesive) in the mixture but nothing to worry about. Are the primers you've tried recommended for new plaster? You may have to thin it if the primer you're using says you can on the useage directions.