Mechanical Roof Curb Detail

This guide does not address roof penetrations.

Mechanical roof curb detail.

Use tack welding or other suitable fastening. Include a footnote in the mechanical and skylight sections that reads all roof curbs are specified in 07720 curb installation should be a part of the roof deck not on top of insulation or roofing materials. Specify roof curbs in section 07720. Roof curbs should be supplied by the hvac manufac turer to the general contractor or building manufacturer and installed by an experienced erector.

As a general rule the curb should be placed directly on the roof support members. Top of all roof curbs shall be level with pitch built into curb when deck slopes. Heights to be 8 above finished roof deck or as detailed. 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.

Internally insulated with 1 1 2 thick 3 lbs. Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer. 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. Roof curb and curb adapter specialists serving north america.

Instructions supplied with the unit curb. Mechanical contractors should not be asked to supply or install roof curbs for roo fi ng systems.