Mechanical Unit Roof Curb Detail

Architectural applications include unit skylights structural and monument skylights terminations at walls expansion joints roof hatches heat and smoke vents and satellite dish systems.

Mechanical unit roof curb detail.

Internally insulated with 1 1 2 thick 3 lbs. Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer. 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. A substantial amount of water was able to enter the building during the hurricane.

Length unit length minus 0 875 outside curb width unit width minus 0 875. Specify prefabricated roof curbs and related products by a roof curb manufacturer not with or by the equipment manufacturer. This gooseneck was attached with only two small screws. As a general rule the curb should be placed directly on the roof support members.

Use tack welding or other suitable fastening method to secure the roof curb in place. This 30 x 10 x 8 18 000 pound hvac unit was attached to its curb with 16 straps one screw per strap. Rooftop attachment of lightning protection systems in high wind regions. Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer.

Heights to be 8 above finished roof deck or as detailed. 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. Curb installation should be a part of the roof deck not on top of insulation or roofing materials. The curb can also be mounted on a roof deck.

Roof curb and curb adapter specialists serving north america. 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. Curbs should be a minimum of eight inches above the finished roof and factory insulated to reduce condensation. Top of all roof curbs shall be level with pitch built into curb when deck slopes.