Installing Roof Curb On Metal Roof

And in this one sentence lie the benefits and the detriments we face in the roof curb business everyday.

Installing roof curb on metal roof.

Measure mark and cut reliefs in bottom curb flanges at each roof panel rib front and rear. Showing how an a c curb is vulcanized and installed on an epdm rubber roof. Set roof curb in position on top of roof panel. This type of curb has the added benefit of being able to be installed either during the roof installation of after the roof is finished.

Do not use fasteners that are long enough to fully penetrate the tectum. Place roof curb back into position and mark the perimeter of the bottom curb flange onto the. Placing the curb on and attaching it to the ribs also allows better transitioning from under the roofing on the upslope end to cover the roof on the downslope end. Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

Install any support framing necessary at this time. Install the roofing screws vertically along each rib in the panel. 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. Curbs should be a minimum of eight inches above the finished roof and factory insulated to reduce condensation.

Do not oversize relief cuts 4. Supplied by others 3. Curb installation should be a part of the roof deck not on top of insulation or roofing materials. Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer.

It is important for the a c contractor to mark exactly where the curb should be i.