Hvac Roof Curb Detail

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.

Hvac roof curb detail.

Heights to be 8 above finished roof deck or as detailed. They also serve as a location for roof penetration to allow cooled air to flow into the building and return air to flow out. Do not cut out the entire roof deck within the curb area. Roof curbs for standing seam metal roofs pick the proper material.

Specify roof curbs in section 07720. Commercial ac manufacturers all have proprietary specs for their curbs. Find out why architects building manufacturers general contractors and erectors prefer rcs for our proven solutions. Refer to figure 17 and tables 1 and 2 for specific center of gravity corner weight information and accessory weights.

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. 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. This guide does not address roof penetrations. Founded in 1959 and with 5 factories across the country thybar is the oldest and largest roof curb manufacturer in the world.

Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer. Units may be set either lateral or. For anyone new to the hvac industry this is a valid question. Let s start with a new installation.

Hvac curbs provide structural support for rooftop ac units and other roof mounted equipment. Roof curbs should be supplied by the hvac manufac turer to the general contractor or building manufacturer and installed by an experienced erector. Internally insulated with 1 1 2 thick 3 lbs. Top of all roof curbs shall be level with pitch built into curb when deck slopes.

Mechanical contractors should not be asked to supply or install roof curbs for roo fi ng systems. 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. Roof support the roof must be capable of adequately supporting the weight of the rooftop unit as well as that of the curb. Instructions supplied with the unit curb.

The slightest inefficiency or mismatch in design or engineering can create blow back. We ve built more curbs than anybody relying on years of experience and libraries filled with hvac equipment data. What is a curb adapter.