![]() ![]() Joint compound is avaliable in to types - reg and light weight. Imperial is/ dries to a harder finish and therefore a bit more difficult to apply. Plaster types include USG"s Diamond Coat and Imperial Coat. Any correction then is an additive process with a bit of sanding of the new material. Must be sanded - scraped between coats and sanded after final coat. Easily applied with almost no time restriction.Ĭon: Requires 3 coats. (It's a dry mix.) Best/ easiest when done by 3 people. Have the ladders/ scaffolds in place prior to mixing. You have a small window of time to apply the plaster (30 - 60 min) No touch-ups. ![]() Start to finish 2-6 hrs per room depending on size and number of surfaces to be coated.Ĭon. Pro: No sanding, very little dust, can acheive a perfectly smooth wall. The material is customarily plaster or joint compound. Skim coat is the application of a thin veneer (1/16" - 1/8") to a wall or ceiling. You can't really do it wrong, because you can sand out your mistakes. It is kinda slow and labor intensive compared to just ripping out the plaster and hanging new drywall. I've renovated over 50 houses built around the turn of the century and used this rather low-tech method quite a bit. If some areas are, you can repair those areas with drywall & joint compound. It also helps to coat the old walls with an acrylic primer of bonding agent first (ask at your paint store).Īll this is assuming the plaster is sound and not coming loose from the wood lathe. ![]() This lets you see any flaws that you can smooth with more compound.Ĭracks can be scratched out and taped with fiberglass drywall tape and wiped with compound. After I get it pretty smooth I usually paint on a thin coat of primer. This method doesn't usually need much sanding. Some people also use a damp sponge to smooth the surface. Just use a broad drywall blade like 16 inch to apply the mud. I have "skim coated" quite a few old plaster walls this way. I imagine they most likely used drywall joint compound. 90 year old plaster huh? First off, why not just ask a neighbor or two what they did and how? ![]()
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