Metal Roof Dormer Flashing Details

Roof flashing is critical to keeping a house dry but people often get it wrong.

Metal roof dormer flashing details.

Videos roofing wrb flashing. Once the gable flashing is set in place we can install our first vertical sheet metal panel that comprises standing seam system. Drip edge installation on an existing roof. Whenever possible begin trim installation at the downwind end of the roof farthest away from the source of prevailing winds to al low flashing laps to face away from wind driven rain.

Do not step on panel ribs or on trim pieces to prevent kinking. Install shingles to the base of the dormer notching the end piece appropriately. The trim and roofing sheet should be fastened every 12 to 24 inches along the gable edge. In our case we are working with a snap lock standing seam roofing system with concealed fasteners.

The gable flashing gets installed along the gable rake in the similar way to starter flashing. Lay a bead of roofing cement along the top of the shingle course just below the dormer and bed the base flashing into it. Flashing is installed to surround roof features such as vents chimneys and skylights. Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley.

In this article veteran remodeler mike guertin shows how to flash a dormer with bombproof details. 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. Metal roofing is a. There are several reasons for it.

The first piece of step flashing should turn the corner and extend over the base flashing. Refer to the details. Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer. Apr 4 2018 metal roof dormer flashing details metal roof is becoming a very popular choice for many homeowners.

At the gable edge use a gable or sidewall flashing.