Two primer coats are recommended in this scenario because much of the first primer coat will be soaked up by the wall the second coat will replenish any primer absorbed by the surface and hide any flaws in the wall.Ĭan you paint directly over joint compound? Before the pros paint walls, they fill holes and patch cracks with joint compound. You’re painting unfinished drywall or plaster. How many coats of primer do I need for drywall? I PVA’d the surface (speak more about that in a second), and skimmed it out. I’ve had it once where I was plastering a little ceiling that I thought was fully prepped. You just need to provide correct preparation. “Work” your mud with a knife in your pan (or on your hawk) for a few seconds.Ĭan you skim over paint? The best answer is yes, the majority of the time it’s perfectly acceptable to plaster over paint. The further along in the finishing process, the thinner the compound should be. How do you prevent pinholes in drywall mud?Īdd a little bit of water. Give it about 30 minutes to an hour to dry completely before grabbing your sander for the next step. How long does skim coat need to dry before painting? Like I said, it dries incredibly fast. Uneven walls can take as many as five coats to achieve a smooth surface. Several things will determine how many coats you need, including: Straightness of the walls. You should expect a minimum of three coats of drywall mud, more likely four, and possibly even five coats. Overly sanding the surface will create additional shine, not ideal for adhesion when you start to apply the paint. This joint compound will produce a smooth finish that is ready for final coats in one to two hours.ĭo you need to sand skimmed walls before painting? If you’ve plastered yourself, or if you can see a few spots and bumps (which could be a splash of PVA or plaster), you can lightly sand these back to avoid them showing up once you’ve painted. Using joint compound for skim coating is simple as the joint compound provides high quality, quick-drying, durable results that can be sanded easily without striping or tackiness. Scoop the right amount of joint compound (about 2″ thick and wide) onto the taping knife, and apply it to the textured wall.Ĭan joint compound be used as a skim coat? How do I make my skim coat smooth? The biggest secret for a smooth skim coat is to keep the taping knife at about 10 degree angle to the wall, and don’t use too much pressure.
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