Roof Curb Details

There are many options available to make sure all building requirements are met.

Roof curb details.

Curbs should be sloped to avert water ponding. All curbs to be provided by one roof curb manufacturer. Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer. Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer.

Use tack welding or other suitable fastening method to secure the roof curb in place. 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. If 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. They can be selected to fit the specific type of roof such as flat pitched or ridged.

Curbs should be a minimum of eight inches above the finished roof and factory insulated to reduce condensation. 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.