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#30 Corner Master™ Control Joint

Expanded flange inside corner control joint

#30 Corner Master™ Expansion/Contraction Control Joint (Double-V) is designed to provide stress relief at inside corner intersections on plaster walls. The Double-V expansion joint absorbs movement resulting from expansion and contraction of plaster walls and controls cracking.

Application(s): Stucco

#30 Corner Master™ has expanded flanges pre-formed at 90° for a flush fit at inside corners. This expansion/control joint is offered in ground heights of 1/2", 3/4" and 7/8", which aids plaster keying and results in a clean, straight finish. 

Manufactured from galvanized steel, also available in Zinc for increased corrosion protection.


Code Approvals & Performance Standards

  • ASTM A653 Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process
  • ASTM C1063 Standard Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster
  • ASTM C1861 Standard Specification for Lathing and Furring Accessories, and Fasteners, for Interior and Exterior Portland Cement-Based Plaster
  • SDS For ASTM A653 Steel Finishing Products For Interior Finishing and Exterior Finishing

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Product Code Description
CR30 #30 Corner Master™ Control Joint

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