expansion control joints

expansion control joints

Drywall Expansion Joints: Use drywall control joints or , expansion control joints ,Drywall control joints or gypsum board expansion joints are used to control cracking in gypsum board ceilings & walls This article discusses expansion & contraction of drywall / gypsum board and the drywall control joint or expansion joint products used to prevent these problems in building interiorsExpansion joint - WikipediaExpansion Joints versus Control Joints Control Joints (CJ) are 1-piece joints designed to relieve stress and minimize cracking; they accommodate initial stucco shrinkage and minor thermal movement The Control Joints are required to form membrane panels no larger than 100 sqft for ceilings and 144 sq ft for walls.