How To Fix A Bad Drywall Job
Olivia Luz

Best to wear gloves so that the alkalinity of the mud won t dry your skin.
Remove the repair bracket center it and glue it to the wall. Coat seams from which you removed tape with. If they painted over poorly sanded seams then you might be able to fix that by getting the drywall knives out again filling feathering and sanding until it looks good then properly priming and painting again. Finally apply a third coat for a smooth sufficiently large repair with slightly sloping less visible edges.
Use a strong detergent like trisodium phosphate to clean gloss or semi gloss paint. Here are the steps. Otherwise scrape the high part off as best as you can using a solid 4 6 mud knife or even a paint scraper. Sometimes you tried and it failed or you get hired to fix a drywall rep.
Once the plaster is dry sand and apply a second coat. Apply the coating to the repair with a drywall knife flattening well beyond the edges. Sponge the wall with a solution of detergent and warm water. If you need to know how to fix a bad drywall repair job i m going to teach you how.
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Press the edges to stick them well. I ve typically done small fixes around the house using a small piece of scrap like a 1x4 behind the opening fit new piece in screw new piece to 1x4 which is screwed to drywall higher up the whole and apply a light coat sand repeat until desired. There are 3 basic options. Take a big wet rag go over the area and then remove a portion with a scotch brite pad.
Keep the pad flat on the wall and sand the hump down a little at a time lightening pressure as you cross from patch to drywall. I fix stuff like this daily for a living as mr patch drywall and you first need to determine if the patch that exists is solid. Spread a coat of drywall primer on all the areas that need repair. Coarse screen cloth can be aggressive in what it removes and you could end up with frayed drywall paper at the edge of the patch making the whole thing look even worse.
Then skim coating the whole wall might fix bad joint mudding.
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