How To Install A Roof Curb On A Metal Roof

Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

How to install a roof curb on a metal roof. Full service curb manufacturers offer this type of diversification and coordination with a given roof system by offering curbs which are canted non canted raised canted self flashing or designed and manufactured to match the exact profile of a pre engineered metal roof system. Roof curbs may include a custom finish that matches the roof color. Take care the first piece is aligned precisely perpendicular square to the edge. Second the curb should be available in a variety of heights.

Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof line. There are many cases where conventional. Use your neoprene washer head screws to secure the metal to the sheathing. Economical flat flange models are also available.

A galvalume coated roof doesn t mean that a galvanized steel roof curb is the best thing to use in fact galvanized roof curbs are known to rust corrode and leak particularly along weld joints as soon as a year after installation. Take your first sheet of metal and place it on the roof so that it overhangs the edge at least 3 4 in 1 9 cm. Repair of a leaky metal roof curb utilizing immerseal hd from sealex inc. Contractors should not be asked to supply or install roof curbs for roo fi ng systems.

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. Space the screws about 12 in 30 cm apart down the entire piece of metal. In addition a 20 year warranty comes standard on all aluminum curbs. Roof curbs for standing seam metal roofs pick the proper material.

Specify roof curbs in section 07720. Install the roofing screws vertically along each rib in the panel.