Go to your local lumber yard and buy a piece of 1"x3". Cut pieces to fit the long edges and place them with 50% overlap above the existing drywall.
Screw each piece in using drywall screws. Install your filler piece, I would suggest to place the screws about 6-8" apart. Use dry mix compound (Sheetrock/Durabond) for the first coat. https://www.homedepot.ca/product/saint-gobain-adfors-250-ft-fibafuse-drywall-tape/1000754764 Fibafuse is premium drywall tape and is better for butt joints. 2nd & 3rd coats can be premixed mud if you wish as it sands easier. Good luck.
Paul_1958 t1_j2ee3b1 wrote
Reply to Had a plumbing issue upstairs, now i need to replace a ceiling drywall cutout used to access the plumbing from below. My progress is below, and im now nervous about the consequences of adding the joint compound without an actual joist or wood anchor behind it. Is this patch temporary or should i be by jrab3717
Go to your local lumber yard and buy a piece of 1"x3". Cut pieces to fit the long edges and place them with 50% overlap above the existing drywall. Screw each piece in using drywall screws. Install your filler piece, I would suggest to place the screws about 6-8" apart. Use dry mix compound (Sheetrock/Durabond) for the first coat. https://www.homedepot.ca/product/saint-gobain-adfors-250-ft-fibafuse-drywall-tape/1000754764 Fibafuse is premium drywall tape and is better for butt joints. 2nd & 3rd coats can be premixed mud if you wish as it sands easier. Good luck.