Fixing water damaged drywall
If not near to a stud or rafter, you could patch a larger hole (red) by gluing some cardboard (green) behind it to bring the replacement piece (blue) you cut flush for you. Some wire looped through the cardboard can provide a means to hold it in place for you while the glue dries. Cut the wire off and glue in your patch and finish up with the mud and sand ritual.
If not near to a stud or rafter, you could patch a larger hole (red) by gluing some cardboard (green) behind it to bring the replacement piece (blue) you cut flush for you. Some wire looped through the cardboard can provide a means to hold it in place for you while the glue dries. Cut the wire off and glue in your patch and finish up with the mud and sand ritual.
