Insulated Roof Curb Detail

Top of all roof curbs shall be level with pitch built into curb when deck slopes.

Insulated roof curb detail.

The right insulated roof curb can mean fast installation saved time and money and a leak free roof penetration system at alta products llc we take pride in the quality and integrity of our work. Internally insulated with 1 1 2 thick 3 lbs. Free cad detail download of a prefabricated roof curb to be used in your architectural section cad drawings. 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.

Lmcurbs has the capabilities to design roof curbs for the most challenging standing seam roof applications and can correctly match your roof system. Roof opening for safety and sound considerations do not cut out the entire roof deck within the curb area. The bottom of the curb has a 2 flange out on all 4 sides to secure and seal up easily when roofing material is applied. Roof support the roof must be capable of adequately supporting the weight of the rooftop unit as well as that of the curb.

Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer. Specify prefabricated roof curbs and related products by a roof curb manufacturer not with or by the equipment manufacturer. 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. Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer.

Curb installation should be a part of the roof deck not on top of insulation or roofing materials. Heights to be 8 above finished roof deck or as detailed. Refer to figure 17 and tables 1 and 2 for specific center of gravity. Pre fabricated fully assembled roof curbs will reduce installation time and costs by ensuring compatibility between the rooftop unit curb and roof openings.

The rc insulated roof curb is formed and welded from 16ga galvanized material with a wood nailer attached to the top. Curbs should be a minimum of eight inches above the finished roof and factory insulated to reduce condensation. A rigid 1 1 2 3 insulation is attached to the inside of curb for thermal and acoustical properties. Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer.

We use superior materials and hand welding techniques to create airtight seals. Curb installation should be a part of the roof deck not on top of insulation or roofing materials.