Mechanical Roof Curb Detail

Specify roof curbs in section 07720.

Mechanical roof curb detail.

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. Become familiar with the roof curb installation procedures. Internally insulated with 1 1 2 thick 3 lbs. 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.

This guide does not address roof penetrations. Use tack welding or other suitable fastening. 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. Mechanical contractors should not be asked to supply or install roof curbs for roo fi ng systems.

Instructions supplied with the unit curb. Roof curb and curb adapter specialists serving north america. Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer. Specify prefabricated roof curbs and related products by a roof curb manufacturer not with or by the equipment manufacturer.

Top of all roof curbs shall be level with pitch built into curb when deck slopes. As a general rule the curb should be placed directly on the roof support members.