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.

Q. My house was built in the 1970's. I'm trying to bring it up to code by installing ground fault circuit interrupters, etc. Can you give some advice on the requirements of a proper firewall and ...

While there is no such thing as a perfect building material, drywall comes pretty close. For one thing, it's dirt cheap, costing about $7 for a 1/2-in.-thick 4 x 8 panel. It's also DIY friendly--about ...