If you’re looking to avoid ceiling cracking, the industry’s leading authority is recommending resilient channel as a solution. The Gypsum Association released a technical document, GA-227-13, “Recommendations for the Prevention of Ceiling Cracking.” Their publication outlines methodologies for mitigating cracking in large span gypsum board ceilings due to fluctuations in temperature and humidity. According to Stan Roller of the National Council of Acoustical Consultants, resilient channel was not originally designed to provide improved sound attenuation, but rather to avoid cracks in the drywall where the direction of the framing changes.
Ceiling cracks at wallboard joints can pose a problem in a variety of conditions, including when the span between framing members is close to or extends past 15 feet. Additionally, centerline cracks can occur because gypsum board and wood framing shrink and expand at different rates due to changes in moisture content and temperature. Installation of resilient channel can reduce this cracking. Resilient channels float the panels away from studs and joists, and provide a spring action that isolates the gypsum board from the framing. This spring action also tends to level the panel when installed over uneven framing as well as provides good sound attenuation.