Heights to be 8 above finished roof deck or as detailed.
Hvac roof curb detail.
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.
Refer to figure 17 and tables 1 and 2 for specific center of gravity corner weight information and accessory weights.
Hvac curbs provide structural support for rooftop ac units and other roof mounted equipment.
Founded in 1959 and with 5 factories across the country thybar is the oldest and largest roof curb manufacturer in the world.
Top of all roof curbs shall be level with pitch built into curb when deck slopes.
Units may be set either lateral or.
Let s start with a new installation.
This guide does not address roof penetrations.
Roof support the roof must be capable of adequately supporting the weight of the rooftop unit as well as that of the curb.
The slightest inefficiency or mismatch in design or engineering can create blow back.
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.
They also serve as a location for roof penetration to allow cooled air to flow into the building and return air to flow out.
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.
Mechanical contractors should not be asked to supply or install roof curbs for roo fi ng systems.
Specify roof curbs in section 07720.
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.
Roof curb and curb adapter specialists serving north america.
What is a curb adapter.
The roof curb is designed to support the weight of the unit and to offer a means for contractors to.
Commercial ac manufacturers all have proprietary specs for their curbs.
Internally insulated with 1 1 2 thick 3 lbs.
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.
We ve built more curbs than anybody relying on years of experience and libraries filled with hvac equipment data.
For anyone new to the hvac industry this is a valid question.
Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer.
Roof curbs for standing seam metal roofs pick the proper material.
