Roof Curb Details

Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer.

Roof curb details.

They can be selected to fit the specific type of roof such as flat pitched or ridged. Specifications prefabricated roof curb to be manufactured of prime galvanized steel construction 20 18 16 or 14 gauge as required meeting astm a653 653m with welded corners and with seams joined by continuous water and air tight welds. Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer. All curbs to be provided by one roof curb manufacturer.

Curbs should be a minimum of eight inches above the finished roof and factory insulated to reduce condensation. All roof curbs equipment rails pipe and duct mounting pedestals and pipe penetration systems to be specified together bought by one contractor and installed by one contractor. There are many options available to make sure all building requirements are met. Roof curbs are support structures for fans and ventilators.

Curbs should be sloped to avert water ponding. As a general rule the curb should be placed directly on the roof support members. The curb can also be mounted on a roof deck.