Flashing A Metal Roof Valley

Valley flashings are custom fabricated to any measurements and angles and usually measure 10 in length but can also be bent in 12 lengths.

Flashing a metal roof valley.

Install valley battens on both ends of the roof valley then attach first flashing 3 4 inches over the roof flange and another 3 4 inches over the fascia if any is present. To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch. Metal roof flashing installation. For example in metal roofing systems valleys are commonly fabricated with hems but can also be fabricated without them in which case they could still be used for metal roofing or any other type of roofing.

A quick step by step guide on how to flash a metal roof. Lay the flashing down in the roof valley and start at the lower end of the roof. Remember to caulk the underside of the flashing with a sealant. Slip a piece of sheet metal flashing under the top layer of shingles to protect the bottom layer in the valley while you cut the shingles with a hook blade.

Make sure to cover the gap at the bottom of the raised ridge. Apply an approximately 3 inch. Now nail this first flashing at both its far ends. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.

Step 6 install the flashing. Attach the flashing panel in place at the bottom. Recommended procedures of basic valley flashing installation. Fold the top of the flashing over the ridge.

How to flash a metal roof. Details concrete masonry roofing wrb flashing. Use 1 inch galvanized roofing nails. One common method is to lay the edge metal under the eaves membrane and over the rake.

Cut the bottom edge and fold it down over the drip edge. Then install a non corrosive metal valley flashing of 24 minimum width lap successive sheets of metal flashing a minimum of 12 inches and seal laps. Two ways to flash roof edges. Make metal roof valley clips cleats get some of the flashing material that matches your valley flashing in metal and thickness cut some strips the dimensions are not critical maybe 3 4 to 1 1 2 wide x roughly 5 6 long bend one end of each strip over roughly 3 4 to 1 but do not hammer it.