Roof Ridge Flashing Installation

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Roof ridge flashing installation.

When installing valley flashing start at the bottom remember to allow for overhang as you ll need to cut the valley flashing back to meet eave line if you plan on a 3 overhang for your panels overhang the valley by at least 3 as well and attach with 1 trim screws every 24 on center. Trim the most common flashing for metal roofing is the ridge cap which is used at the peak of a roof where two opposing roof slopes join. Move it up and tack it in place again. If you are overlapping ridge cap flashing have a 6 inch overlap.

Tack it in place being careful not to damage the underlying roof shingles then lay out and nail a course. Open valleys have metal flashing to protect this critical area of the roof. Drip edge installation on an existing roof. Dealing with dips and making clean overlaps metal drip edge flashing is installed on the perimeter of a roof to direct water away from the fascia into the gutters and to keep wind blown rain.

Other flashings include transition flashing end wall and sidewall flashings and valleys see diagram on right for application. Building ventilation whether by gravity ridge vent power operated fans or other means contributes. The edge of the roof has thin metal flashing that helps water drip off. Move along and chalk line every five or six courses being careful not to damage the underlying roof shingles.

Lay out and nail into shingles and repeat five to six courses. Videos roofing wrb flashing.