![]() ![]() Plaster walls can be finished in any luster, from high-gloss to ultra-matte. What is the best paint finish for plaster walls? The paint shop or home improvement store should know if your paint requires this, and can mix the appropriate primer. Some bright colors, especially reds and yellows, will usually look better with a tinted primer. For a premium option, Sherwin Williams offers durable primers specifically for plaster. Kilz brand primers are known for their stain-blocking capabilities and are available at many home improvement centers. Perhaps most useful are oil primer’s ability to fill and seal the surface of the plaster. Oil-based primers are also great at sealing out moisture, which can be a major problem for old plaster walls. They have superior stain blocking abilities, and will keep any old stains from bleeding through to new paint. Oil-based primers are the best option for old walls. Plaster walls are more vulnerable to moisture than drywall, and require high-quality primers. What’s the best primer for plaster walls? Once the surface is roughly level, smooth the surface with high grit sandpapers to create a smooth surface for the primer coat. To do that, start by blending any patches or new plaster into the old plaster with rough grit sandpapers. The goal is to create a smooth, even surface with no visible cracks or holes. Larger holes from old bolts or longer cracks should be patched just like drywall and sanded. ![]() It remains flexible, so the crack will be less likely to reappear. Paintable caulk can be used to fill minor cracks. Plaster walls are unforgiving, and any cracks that are left alone will likely spread. This process can be tedious, but it’s one of the most important steps. Once you have the walls stripped down to bare plaster, you’ll need to repair and patch any cracks or old damage. ![]()
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