In furring, what is the most common type?

• A. Furring Channel
• B. Z-girts
• C. Hat Channel
• D. Wood lath

Answer: (C)

Furring in interior construction uses lightweight metal channels to create a flat, plumb surface for wall or ceiling finishes, while also providing a small cavity for services and insulation. The hat channel is the most common type because its distinctive hat-shaped cross-section gives great stiffness for very little material, making it quick and economical to install while giving a solid backing for gypsum board. Its shape resists bending and distributes screws well, which helps keep the finished surface smooth and reduces nail pops or telegraphing from underlying framing. Installing hat channels perpendicular to the framing creates an isolated, level plane for drywall, improves acoustics and moisture considerations, and allows easy attachment of standard drywall sheets. Other options exist, but they’re less commonly used for typical drywall furring due to differences in stiffness, spacing, or application scope; wood lath is antiquated for modern drywall, and Z-girts or generic furring channels serve different systems or specialized applications.