Flashing A Metal Roof Valley

Step 9 cut corners and apply cement dub cut the top layer shingles see step 4 in open metal valley above.

Flashing a metal roof valley.

Step 6 install the flashing. Remember to caulk the underside of the flashing with a sealant. 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.

Now nail this first flashing at both its far ends. Fold the top of the flashing over the ridge. Details concrete masonry roofing wrb flashing. One common method is to lay the edge metal under the eaves membrane and over the rake.

Install an underlayment centered in the roof valley. 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. How to flash a metal roof. Apply an approximately 3 inch.

Valley flashings are custom fabricated to any measurements and angles and usually measure 10 in length but can also be bent in 12 lengths. Metal roof flashing installation. Attach the flashing panel in place at the bottom. 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.

Lay the flashing down in the roof valley and start at the lower end of the roof. 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. A quick step by step guide on how to flash a metal roof. 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.

Recommended procedures of basic valley flashing installation. Use 1 inch galvanized roofing nails. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing. Make sure to cover the gap at the bottom of the raised ridge.