Installing Flashing On A Roof Valley

One common method is to lay the edge metal under the eaves membrane and over the rake.

Installing flashing on a roof valley.

The flashing shall be a minimum of 4 inches 102 mm high and 4 inches 102 mm wide. In order to properly install new flashing you ll have to remove the shingles surrounding your old flashing and then re lay them after installation. 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. Especially if you live in an area that gets a lot of snow and ice.

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. Many roofers cut the shingles across because they say it s safer. Flashing is generally installed at any joints or edges in the roof where water could otherwise work its way in. In this video i show you how i do the valleys on a shingle roof.

Now nail this first flashing at both its far ends. For the valley areas of the roof you will be using valley flashing. Install an underlayment centered in the roof valley. Install the underlayment as directed by the manufacturer then set the valley flashing on top of it.

Snipping off the corners of. Others start with a 3 inch wide. When you install roof flashing you will need to use a sealant. Place a piece of sheet metal under the shingles to make sure you will not damage the flashing.

No one of this affirmat. Cut the bottom edge and fold it down over the drip edge. While roofing professionals occasionally use nails when flashing they must choose whether to nail to the roof plane or the vertical wall. Fold the top of the flashing over the ridge.

Step 6 install the flashing. Details concrete masonry roofing wrb flashing. Typically flashing is installed using roofing nails and roofing cement. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.

How to do it determine cuts. Apply an approximately 3 inch. Before you apply the flashing you ll need to lay down a waterproof membrane. Remember to caulk the underside of the flashing with a sealant.

To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch. Recommended procedures of basic valley flashing installation. Some roofers cut the shingles parallel to the flashing s center ridge.