Standard Roof Curb Heights

In no case should the curb be less than 14 inches in height.

Standard roof curb heights.

No matter which type of metal roofing you have we can fabricate a custom curb to your exact needs. Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer. Insulated curbs standard contruction. Pitch corrected to provide a level top.

Prefabricated roof curbs are available as insulated typetc 1 tc 2 and tc 3. Standard fabrication specifications 080 aluminum. Base flange attachments for securing to the building structure. See figure 6 6.

I am just speculating here but i have a couple of theories. 6 inches 8 gutter slope to curb face. Standard traffic andcenter islands. 18 inches 7 gutter thickness.

6 inches 4 curb face slope in six inches. Roof pitch is a measurement of a roof s slope expressed as a ratio. Curbs should be sloped to avert water ponding. Standard cold planing and resurfacing cross sections.

Various top flange widths. Standard combined curb and parking strip or gutter. Prime g 90 galvanized steel. 1 inch 6 gutter width.

12 inches 2 curb top in width. 1 back wall of curb in height. 6 inches will generally capture most drainage. Factory installed wood nailer.

Although there is no single standard roof pitch used on all sloped roofs factors such as roofing materials and local climate help to determine the appropriate range of pitches for a given building. 1 2 inch 5 curb face and apron radius. 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. 6 inches 3 curb face in height.

Specify prefabricated roof curbs and related products by a roof curb manufacturer not with or by the equipment manufacturer. 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. 6 inches is easy to step up and down from. L 6964 1 and l 19689 1 ch 3.

Curbs should be a minimum of eight inches above the finished roof and factory insulated to reduce condensation. 1 1 2 inch thick 3 pound density rigid insulation.