Top of all roof curbs shall be level with pitch built into curb when deck slopes.
Roof curb detail.
Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer.
All curbs to be provided by one roof curb manufacturer.
Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer.
Heights to be 8 above finished roof deck or as detailed.
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.
They can be selected to fit the specific type of roof such as flat pitched or ridged.
Curb installation should be a part of the roof deck not on top of insulation or roofing materials.
Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer.
Curbs should be a minimum of eight inches above the finished roof and factory insulated to reduce condensation.
There are many options available to make sure all building requirements are met.
Curb installation should be a part of the roof deck not on top of insulation or roofing materials.
Free cad detail download of a prefabricated roof curb to be used in your architectural section cad drawings.