Roof Curb Weight

Internally insulated with 1 1 2 thick 3 lbs.

Roof curb weight.

Top of all roof curbs shall be level with pitch built into curb when deck slopes. Wood shingles western red cedar 24 inch shingles installed weight when dry. Top of all curbs for roof top equipment shall be level with pitch built into curbs. Specify roof curbs in section 07720.

Include a footnote in the mechanical and skylight sections that reads all roof curbs are specified in 07720 curb installation should be a part of the roof deck not on top of insulation or roofing materials. Bc shake shingle association. To avert a vibration or structure borne noise problem engineers should specify vibro acoustics noise control curb which provides external vibration isolation not just isolation of the usual suspects inside the unit fan compressor etc. Heights to be 8 above finished roof deck or as detailed.

Hvac units condensing units for hvac systems need to sit above the roof on secure and level platforms. Curbs can be insulated when needed and accommodate roof vent sizes ranging from 4inch to 48inch in diameter. All curb flanges shall be pre punched at 3 max centers with 1 4 holes 1 in from outside edge of flanges. Roof support the roof must be capable of adequately supporting the weight of the rooftop unit as well as that of the curb.

Bc shake shingle association. Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer. The flashing of the roof curb allows for mechanical fasteners to be used so that the curb is bonded to the roof. If you need a curb mount.

Rooftop units primary sources of vibration problems are often culprits of non compliance with background sound criteria. Installed weight when wet. By selecting this hybrid roof curb you have selected a patented us patent us 9546485b2 and proven product that is easy to install. This curb system is typically used when the roof top unit weight cannot be supported by purlins alone and loads must be transferred to the main frames with i beams.

Bc shake shingle association. Refer to figure 17 and tables 1 and 2 for specific center of gravity corner weight information and accessory weights. Ssm s roof curb installation guide. Curbs for roof hatches skylights and smoke hatches shall be constant height curbs following pitch of the roof unless specified otherwise.

Wood shingles western red cedar 24 inch shingles installed weight when wet. With decades of experience and thousands of roof curbs under our belt it is no wonder we are able to continue to innovate and improve our hybrid roof curbs. Roof top unit weight will not allow thermal movement of the standing seam roof system if the units were placed on standard curbs attached to the roof. To mount up blast fans an all welded curb cap fits over an appropriately sized roof curb.

Once the roof curb is in place it is to be covered with roofing material for a water tight seal.