What is the primary function of a roof curb?

The primary function of a roof curb is to provide a mounting platform for mechanical units such as air conditioning equipment, exhaust fans, and other rooftop installations. Roof curbs are elevated frames that create a stable base for these units and ensure that they are properly installed above the roof surface, allowing for drainage and preventing any potential water pooling around the mechanical components.

This function is crucial because it enhances the efficiency of the HVAC systems and protects the roof from damage that could result from improper installation of mechanical units. Additionally, by elevating the units, roof curbs help to facilitate maintenance and service access, ensuring that technicians can safely work on the equipment without compromising the integrity of the roof.

Understanding this function helps clarify why options focusing on structural support or waterproofing are not primary roles of the roof curb itself.