Refer to figure 17 and tables 1 and 2 for specific center of gravity.
Insulated roof curb detail.
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.
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.
Specifications 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.
Roof support the roof must be capable of adequately supporting the weight of the rooftop unit as well as that of the curb.
Curbs should be a minimum of eight inches above the finished roof and factory insulated to reduce condensation.
Pre fabricated fully assembled roof curbs will reduce installation time and costs by ensuring compatibility between the rooftop unit curb and roof openings.
Roof opening for safety and sound considerations do not cut out the entire roof deck within the curb area.
Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer.
Lmcurbs has the capabilities to design roof curbs for the most challenging standing seam roof applications and can correctly match your roof system.
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.
Curb installation should be a part of the roof deck not on top of insulation or roofing materials.
A rigid 1 1 2 3 insulation is attached to the inside of curb for thermal and acoustical properties.
The rc insulated roof curb is formed and welded from 16ga galvanized material with a wood nailer attached to the top.
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.
Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer.
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.
Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer.
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.
Specify prefabricated roof curbs and related products by a roof curb manufacturer not with or by the equipment manufacturer.
Curbs should be a minimum of eight inches above the finished roof and factory insulated to reduce condensation.
