Hvac Roof Curb Detail

Lightning protection terminal wall mount detail.

Hvac roof curb detail.

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. The curb is secured into place and roofing material is extended all the way up the sides of the curb. 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. 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.

Wall base termination detail. 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. 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. The difference is ssm.

Heights to be 8 above finished roof deck or as detailed. Lightning protection terminal roof mount detail. Roof area divider curb type. Ssm fabricates roof curbs that respond to a number of different conditions.

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 shall be internally reinforced with angles 48 on center and factory installed wood nailer. The curb should be furnished with a wood nailer. Mechanical contractors should not be asked to supply or install roof curbs for roo fi ng systems.

Specify prefabricated roof curbs and related products by a roof curb manufacturer not with or by the equipment manufacturer. Does not address roof penetrations. Wall flashing with coated metal edge. 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.

Roof curbs should be supplied by the hvac manufac turer to the general contractor or building manufacturer and installed by an experienced erector. Our curbs are one piece units that are easy to install. Heat welded walkway installation. 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. Top of all roof curbs shall be level with pitch built into curb when deck slopes. The top of the curb should be level after installation.