Fasten wood backing wherever drywall ends have no support within four inches. Note: Make sure to check corners and ceiling/wall joints. Measure from the end of the ceiling to the middle of a joist and ...
Basic drywall installation ranges from $1-$2 per square foot. Adding soundproof drywall or accessories like Green Glue and resilient channels can increase the cost to $3-$5 per square foot. Full-scale ...