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 ...

Joint compound, or drywall mud, is a gypsum-based paste critical for finishing joints, corners, and repairing cracks in drywall and plaster. Selecting the correct type of drywall mud is important ...