Powerful as it’s, drywall can stand up to only limited abuse. If the crack is on a vertical or horizontal seam, fastidiously widen the crack with the corner of a paint scraper, utility knife or chisel to determine if the crack extends utterly by way of the paper that is masking the seam (image 2); and if the tape has pulled loose from the wall floor.
Cover the tape and taper or feather” the perimeters of the new compound onto the encompassing wall surface (image 5). Drywall compound needs to be utilized in a number of thin layers as a result of thicker layers are too troublesome to smooth out and can finally trigger cracking.
Use metallic snips to cut a section of new corner bead to suit the restore area (image 3). Apply a coat of joint compound to the nook, set the bead in place then apply another layer of joint compound over it. Let dry completely then add one other layer or two of compound depending on what is needed (image 4).
Use an digital stud finder to mark the studs behind the damaged drywall, then use a drywall noticed or reciprocating saw to chop away the drywall. Make sure to observe spraying the feel onto a scrap of drywall or cardboard to high-quality-tune your method earlier than you spray it on the wall patch.
Cover the gouge with a skinny layer of joint compound, feathering it out along the wall. Remove as a lot drywall as wanted till you reach studs past both sides of the damaged area. You don’t need to apply too much compound, or sand too much away, in any one step.