Dear Pat: I am planning to convert my garage into abedroom with drywall. I have read many books about how to hangdrywall. What are the most common mistakes with installing drywallin a room? —- Nan D.

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 ...