Mechanical Roof Curb Detail

When you install adapter curbs welded rtu rooftop unit curbs or equipment supports for your rooftop hvac package unit going with the wrong curb adapter company can cost you big money and time.

Mechanical roof curb detail.

Top of all roof curbs shall be level with pitch built into curb when deck slopes. This guide does not address roof penetrations. Specify prefabricated roof curbs and related products by a roof curb manufacturer not with or by the equipment manufacturer. Use tack welding or other suitable fastening.

Mechanical contractors should not be asked to supply or install roof curbs for roo fi ng systems. Roof curb and curb adapter specialists serving north america. 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. Instructions supplied with the unit curb.

Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer. 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. Roof curbs should be supplied by the hvac manufac turer to the general contractor or building manufacturer and installed by an experienced erector. 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.

As a general rule the curb should be placed directly on the roof support members. Specify roof curbs in section 07720.