Leave a thin film: Smooth the compound with a taping knife. Or knife it on: You can also apply the skim coat with a large taping knife. The compound will be removed with a wide taping knife. Here, the author is using a roller to apply the skim coat. Roll out a skim coat: A skim coat provides the highest level of drywall finish, referred to as a level 5 finish. WORK SMART: When applying a skim coat, remember that the inside corners have already been coated, so there is no need to cover those areas again. Because of the time and skill required, level 5 finishes are not frequently applied. Otherwise, it can create an uneven surface covered with tool marks and even air bubbles. To do a good job, you need good lighting and a finisher who really understands the process. #DRYWALL SKIM COAT FREE#The end result should be a smooth surface that is free of tool marks and ridges.Īs you can imagine, skim coating to create a level 5 finish is time-consuming work. taping knife to remove most of the compound. Once you have the area covered with a thin coat, use a 12-in. area at a time, so that the compound doesn’t dry out in places before you smooth it. For larger areas, I like to use a paint roller. The compound should not be runny, but it should be thin enough to trowel or roll on easily. To apply a skim coat, thin down a topping compound. A skim coat helps minimize the textural differences between the surfaces as well as variances in absorption. Remodeling is another instance where you might consider skim-coating drywall for example, if you’re trying to blend new drywall panels with an existing painted surface. These differences are magnified by certain paint and lighting. In areas that have been sanded lightly, the paper fibers will be raised. In addition, the texture will be different the taped surfaces will be smooth and fine, the paper surface will be a little rougher. If you tape only the joints and fasteners, the porosity of the untaped paper surfaces will differ from that of the taped surfaces. Skim coating is recommended if the surface will be highlighted by bright lights or if you plan to decorate the walls with paint that has a glossy (or even eggshell) finish or a thin wallcovering. To take the job to a level 5 finish, you need to apply a skim coat of compound over the entire drywall surface.Ī skim coat is essentially a “film” of joint compound and is not a readily measurable thickness. If you follow the detailed instructions in my previous articles about applying the first, second, and third coats, you’ll achieve what the industry calls a level 4 finish.
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