What material is commonly used for resilient channels when installing drywall?

The use of metal for resilient channels in drywall installation is standard practice because metal channels provide the necessary strength and flexibility to reduce sound transmission and accommodate some movement. Resilient channels are designed to be installed perpendicular to the wall studs, creating a decoupling layer between the drywall and the framing. This decoupling is instrumental in minimizing sound vibrations that can travel through solid materials.

Metal channels are also fire-resistant, durable, and can withstand the weight of the drywall while maintaining the integrity of the resilient system. They are also easier to install securely and align properly compared to other materials. In contrast, materials like wood, plastic, and fiberglass either do not provide the necessary sound isolation properties, do not have the same load-bearing capabilities, or may not meet code requirements for fire safety in a construction setting. Therefore, metal is the most suitable material for resilient channels used during drywall installation.