Source(s): sheetrock joint compound plaster skim coat: https://biturl.im/phNHf. Once the first skim coat is complete, let the joint compound dry for 24 hours. Joint compound has a longer working time, which could be ideal if you are unaccustomed to taping drywall seams. Can You Have Stained Doors With Painted Trim. Refreshing rental unit bathroom with plaster walls and latex paint. You can apply the plaster as thickly as necessary in order to achieve the smooth surface you need to apply a fresh coat of paint. You can also use a sponge or a trowel to place texture exactly how you want it. When shopping for premixed joint compound, you’ll come across the following types: • All-purpose drywall compound is a preferred choice for DIYers since it can be utilized for an array of tasks such as taping, finishing and skim-coating. 1 decade ago. The plaster is troweled onto the wall surface wet, and when it dries, it forms a very hard, durable surface. But if you get them, don’t worry; the lightweight compound sands easily. While you may have to sand more heavily, plaster tends to be more effective than joint compound at solving this type of problem. It is important to note the differences between skim coat and plaster. But the thing about plaster is it takes a lot of skill to apply. Once the first skim coat is complete, let the joint compound dry for 24 hours. This is all normal since we've been building up the base and structure of the plaster with new material, but that's all about to change. After the blueboard or base coat … Consider what type of texture you would like these walls to have before heading to the home improvement store to pick up your materials. Skim-coating is done with drywall compound: a white, pastelike substance that is applied to drywall to cover joints, cracks, and nailheads. By creating an account you agree to the Hunker. Patching Plaster has a longer working time, and of course drywall compound comes in a bucket ready to go. Start of suggested clip. If you’re not sure which one to choose, here are a few things you might want to consider. Skim-coating is done with drywall compound: a white, pastelike substance that is applied to drywall to cover joints, cracks, and nailheads. Try to avoid ridges and bumps with all purpose joint compound. There are good "dustless" joint … Hot mud is "hot" because the chemical reactions of the hardening chemicals give off heat. If you can, make cleaner patches in wood or wallboard with regular, non-setting joint compound. It is best to work in small areas at a time. Lastly, remove any nails from the wall and fill the holes with joint compound. • Lightweight drywall joint compound is … Choosing plaster for the ceiling gives you a wide variety of styles to choose from. To finish a typical drywall patch on a plaster surface, perform the following three coats: Embed paper tape over the edges of the drywall patch, coat the paper tape to hide it and apply a thin polish coat after sanding the joint compound smooth with 100-grit sandpaper. It can be used for all phases of drywall finishing: embedding joint tape and filler and finish coats, as well as for texturing and skim-coating. If the durock is rough, just skim the whole surface with a flat trowel and sand. Regular joint compound is easy, but not durable. Up until this point in our plaster repair/skim coating series, the joint compound we've been applying to the walls has felt a whole lot thicker than the term "skim" implies. Because of the thicker consistency, you will likely have to sand it down more heavily before you can achieve a seamless finish between two sheets of drywall. An avid craftsman and musician, Deziel began writing on home improvement topics in 2010. 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