How To Set A Roof Curb

Use tack welding or other suitable fastening method to secure the roof curb in place.

How to set a roof curb.

Prefabricated roof curbs have been in use since the roof has been utilized for something other than keeping weather out. The curb should be installed to the roof and or wall using appropriate type and size fastener depending on roof and or wall material. The primary function of the curb is to keep weather out while supporting flashing the equipment on it. Make sure all the measurements are correct and the location is properly marked.

The fan base is secured to the curb using a minimum of 8 appropriately sized galvanized self drilling screws. Prior to setting the unit onto the curb the installer should ensure that a sealing material is positioned between the unit and the curb to provide a watertight connection. Specify prefab roof curbs for use with all roof penetrations and roof mounted equipment including and not limited to hvac units duct openings pipe penetrations power roof exhauster intake and relief vents flues or job fabricated items. Make sure the surface is free of water and debris.

As a genera l rule the curb should be placed directly on the roof support members. Specify prefabricated roof curbs and related products by a roof curb manufacturer not with or by the equipment manufacturer. And in this one sentence lie the benefits and the detriments we face in the roof curb business everyday. Prep surface area by removing all debris and water.

The curb can also be mounted on a roof deck. The rooftop unit may be mounted immediately after the curb is installed. Roof curbs allow the installation of the primary roof and the flashings around this roof curb prior to the delivery of the actual roof equipment and the setting of this equipment. The curb can also be mounted on a roof deck.

Make sure that the duct connection and fan inlet are properly aligned and sealed. The roof curb will be mounted on a new building it can be assembled at any convenient location and installed as soon as the roof support members are in place. Flat roof curb installation steps. Any piece of material or equipment if it is not simply sitting on the top of the roof such as a condenser will have a roof curb mounted to the roof with the piece of equipment above the roof curb.

In this case additional nailing plates must be. Use tack welding or other suitable fastening method to secure the roof curb in place.