Plus 3 Lightweight All-Purpose Joint Compound Ready-Mixed Offers All Of The Benefits Of A Conventional-Weight All-Purpose Joint Compound Plus Three Key Advantages: Up To 35% Less Weight; Less Shrinkage And Exceptional Ease Of Sanding. The Compound Features Superior Ease Of Handling Good Crack-Resistance And Excellent Adhesion. Formulated To Provide Low Shrinkage It Usually Requires Only Two Coats Over Metal Such As Corner Beads And Fasteners.