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Holes larger than 2 inches.
With large holes, I recommend cutting out an area such that a new small piece of sheetrock can be applied to 2”x4” studs. For example, I would consider putting in a new 16”x16” piece of sheetrock for a hole that is greater than 2” in diameter and less than 16” in diameter.
The best method to remove piece of damage sheetrock is to use a Carpenters knife (razor blade) and score area where you want to cut out. Repeatedly apply knife until you have worked your way through sheetrock. When complete, you should have about ½” to ¾” of 2”x4” stud showing on each of two exposed studs.
Note: Care should be taken to ensure no wires are cut behind sheetrock when cutting out damaged piece.
Next, cut a piece of new sheetrock to size of hole, and secure with sheetrock screws or ringed sheetrock nails.
Next, tape cracks with mesh tape material mentioned above. Then as described earlier, apply three skim coats of Joint Compound, with each successive coat getting flared out further. Make sure you wait for Joint Compound to dry before applying next coat. Perform a final light sand after final coat has been applied and has had time to dry, and then paint.
Me_Donovan@comcast.net http://www.homeadditionplus.com http://www.homeaddition.blogspot.com
Over the past 20+ years Mr. Donovan has been involved with building homes and additions to homes. His projects have included: building a vacation home, building additions and garages on to existing homes, and finishing unfinished homes. Mr. Donovan's formal education and profession have been as an Electrical Engineer and Marketing Manager.