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.

Ssm fabricates roof curbs that respond to a number of different conditions. Our curbs are one piece units that are easy to install. Exhaust fans hvac equipment or other specialty devices of all kinds can be accommodated by our curbs. The difference is ssm.

Top of all roof curbs shall be level with pitch built into curb when deck slopes. Wall with self terminating parapro paraflex 531 liquid flashing. Roof curbs should be supplied by the hvac manufac turer to the general contractor or building manufacturer and installed by an experienced erector. Lightning protection terminal roof mount detail.

The curb should be furnished with a wood nailer. Roof area divider curb type. A good penetration requires more than supplying just any roof curb. Wall flashing with coated metal edge.

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. The roof curb is designed to support the weight of the unit and to offer a means for contractors to connect the supply return air duct work. 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. Does not address roof penetrations.

The curb and the equipment should be structurally capable of supporting intended loads and should be so designed that no penetration for drains power lines etc will occur through the roof flashing. Internally insulated with 1 1 2 thick 3 lbs. Lightning protection terminal wall mount detail. The curb is secured into place and roofing material is extended all the way up the sides of the curb.

The top of the curb should be level after installation. 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 curb systems although rcs does not provide hvac rooftop units we are experts in the field and proudly provide the most critical component the roof curb system that is designed to properly support the weight of the unit and keep the water on the outside of the building where it belongs. Heights to be 8 above finished roof deck or as detailed.

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. Comply with local code requirements for minimum curb height but in no case shall curb height be less than 18 inches as measured from top of bar joist to top of curb nor shall curb height be less than 8 inches as measured from top of roof membrane to top of curb.