Hvac Roof Curb Detail

Mechanical contractors should not be asked to supply or install roof curbs for roo fi ng systems.

Hvac roof curb detail.

Do not cut out the entire roof deck within the curb area. We ve built more curbs than anybody relying on years of experience and libraries filled with hvac equipment data. Commercial ac manufacturers all have proprietary specs for their curbs. Instructions supplied with the unit curb.

Through a comprehensive approach combining attention to detail with a constant flow of information rcs provides the most innovative and complete roof curb systems in the industry. Specify roof curbs in section 07720. When a building is constructed prior to the installation of the hvac rooftop unit rtu the roof is cut and a metal structure called a roof curb is installed. What is a curb adapter.

Founded in 1959 and with 5 factories across the country thybar is the oldest and largest roof curb manufacturer in the world. Refer to figure 17 and tables 1 and 2 for specific center of gravity corner weight information and accessory weights. Units may be set either lateral or. The roof curb is designed to support the weight of the unit and to offer a means for contractors to.

Roof curbs for standing seam metal roofs pick the proper material. Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer. For anyone new to the hvac industry this is a valid question. Heights to be 8 above finished roof deck or as detailed.

Roof curb and curb adapter specialists serving north america. The slightest inefficiency or mismatch in design or engineering can create blow back. Roof support the roof must be capable of adequately supporting the weight of the rooftop unit as well as that of the curb. Hvac curbs provide structural support for rooftop ac units and other roof mounted equipment.

A galvalume coated roof doesn t mean that a galvanized steel roof curb is the best thing to use in fact galvanized roof curbs are known to rust corrode and leak particularly along weld joints as soon as a year after installation. Top of all roof curbs shall be level with pitch built into curb when deck slopes. Internally insulated with 1 1 2 thick 3 lbs. 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.

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. Let s start with a new installation. This guide does not address roof penetrations.