What is the primary purpose of a roof curb?

The primary purpose of a roof curb is to create a stable and secure mounting platform for equipment while simultaneously ensuring a watertight seal where the roof penetrates. Roof curbs are typically used for HVAC equipment such as exhaust fans, air conditioning units, and other rooftop appliances.

By providing a waterproof roof penetration, the curb prevents leaks that could lead to water intrusion and damage to the interior of the building. This is particularly critical in HVAC applications where a roof curb is exposed to weather elements, and effective sealing is pivotal to maintaining the integrity of the roof.

Additionally, the roof curb offers a solid, secure mounting place for exhaust fans and similar units, allowing for easier installation and support of the weight of the equipment. It plays a vital role in both structural stability and protection against water intrusion, making options that highlight both aspects of a roof curb’s purpose inherently correct. Therefore, recognizing both the waterproofing function and the mounting capabilities of a roof curb reinforces the understanding that both aspects are crucial to its design and function.