Re: Painting Drywall Repairs
The premixed joint compound and topping compound are the proper products to use when repairing drywall. You can either use paper or fiberglass tape, fiberglass is a self stick mesh, so it's a bit easier to use everywhere with the exception of corner work, which should be paper taped.
You only need to use joint compound for the first coat, after that use topping compound to fill out the joints, it's easier to sand. Before using ANYTHING, whip up the compound with a paint wand in a drill to cream and fluff the compound. You can also add just a touch of clean, clear water to make it a bit more workable if you like.
Prime your repair work with two coats of Zinnser 1 2 3 (blue label ) or comparable primer. Follow that by priming the entire wall with either one or preferably two coats. This will blend everything together the best, preventing the shadowing you are concerned about. Follow the primer with two coats of quality paint such as Sherwin Williams or Kelly Moore. Behr really is terrible stuff, I don't recommend it at all.
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