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As @Nick2253 commented, sanding between coats promotes better adhesion of the next coat. This occurs because a rougher surface has more area and "features" for the next coat to grab onto. That's why it's easier to scrape paint off of a smooth surface like glass than a relatively rough one like wood. Sanding also helps remove any bumps from dust that's ...


2

You definitely need to sand the loose paint off before repainting. Otherwise your new coat will quickly begin peeling as well, since it would be relying on the already peeling paint underneath it for adhesion to the deck. There are actually disc sanders made specifically for the purpose of removing old flaking paint. Sanding will also help feather the edges ...


2

Putting on paint with a roller adds a texture to the paint as you may have noticed. This is controllable to some extent by the choice of roller used. Cutting in around windows and ceiling corners almost always wants to be done before doing the roller work. (The professional painters I have seen painting at the place I work always do it that way too). After ...



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