The roof must be capable of adequately supporting the weight of the rooftop unit as well as that of the curb.
Roof equipment curb details.
Prefabricated roof curbs are available as insulated typetc 1 tc 2 and tc 3.
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.
Refer to figure 17 and tables 1 and 2 for specific center of gravity corner weight information and accessory weights.
Specify prefabricated roof curbs and related products by a roof curb manufacturer not with or by the equipment manufacturer.
Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer.
Insulated curbs standard contruction.
Factory installed wood nailer.
The slightest inefficiency or mismatch in design or engineering can create blow back resistance that can wear down your climate control fan parts and cause your equipment to waste costly energy.
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.
Prefabricated roof curb to be manufactured of prime galvanized steel construction 20 18 16 or 14 gauge as required meeting astm a653 653m with welded corners and with seams joined by continuous water and air tight welds.
Allowing the highs to fit under the roof panel on the upslope and over the roof panel on the downslope to create a continuous water flow is critical to the function of the roof curb.
Prime g 90 galvanized steel.
Units may be set either lateral or parallel to the roof support members.
Lmcurbs has the capabilities to design roof curbs for the most challenging standing seam roof applications and can correctly match your roof system.