Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer.
Rtu roof curb detail.
See figure 6 6.
Curb installation should be a part of the roof deck not on top of insulation or roofing materials.
Typical roof curbs the curb should be structurally capable of supporting intended loads and designed such that drains power lines etc do not penetrate roof fl ashing.
Internally insulated with 1 1 2 thick 3 lbs.
Installer s guide roof curb packaged rooftop units.
The curb should be furnished with a wood nailer which provides a minimum of 3 5 of nailer surface mounted at the top of the curb to permit mechanical attachment of.
Through a comprehensive approach combining attention to detail with a constant flow of information rcs provides the most innovative and complete roof curb systems in the industry.
Curbs should be a minimum of eight inches above the finished roof and factory insulated to reduce condensation.
Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer.
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.
In no case should the curb be less than 14 inches in height.
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.
Curb installation should be a part of the roof deck not on top of insulation or roofing materials.
Renaud de saint ceran subject.
The curb should provide a minimum clearance of 10 inches between the top of the finished roof surface and the top of the wood nailer continuous around the curb perimeter.
If the roof curb will be mounted on a new building it can be assembled at any convenient location and installed as soon as the roof support members are in place.
Baycurb042a baycurb043a baycurb044a precedent roof curb acc svn43e en created date.
Flange screwed to 15 32 osb roof deck 8 2 7 24 x 24 curb with exhaust fan fan screwed to curb 2 5 8 36 x 36 curb with exhaust fan fan screwed to curb 3 3 9 5 9 x 3 8 curb with 2 8 high hvac unit hvac unit screwed to curb 4 5 10 5 9 x 3 8 curb with 2 8 high relief air hood hood screwed to curb 35 6.
Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer.
Top of all roof curbs shall be level with pitch built into curb when deck slopes.
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.
