Updated Recommendations for Gypsum Panel Product Repairs
As the technical, promotion, and information center of the gypsum industry, the Gypsum Association (GA) regularly revises its publications to reflect technological advances, clarify ambiguities, and respond to questions from the public. Updates to both GA-221 Repair of Joint Ridging and GA-222 Repairing Screw or Nail Pops fall into the latter category. Each set of recommendations clarifies best practices associated with common wallboard repairs.
Joint ridging, or beading, is a uniform, fine linear deformation that can occur at the joints of finished and decorated gypsum panel products. Compression at the edges or ends of the panels due to extreme fluctuations of temperature and humidity is the most common cause of ridging; however, misaligned framing can also contribute to the problem. Whatever the case, repairs of joint ridging should be undertaken only after a wall or ceiling system has stabilized. The Gypsum Association recommends waiting until a new structure has experienced at least one complete heating/cooling cycle before making repairs.