Installing Flashing On A 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.

Installing flashing on a roof valley.

To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch. Typically flashing is installed using roofing nails and roofing cement. In this video i show you how i do the valleys on a shingle roof. Flashing is generally installed at any joints or edges in the roof where water could otherwise work its way in.

When you install roof flashing you will need to use a sealant. Install the underlayment as directed by the manufacturer then set the valley flashing on top of it. Fold the top of the flashing over the ridge. Cut the bottom edge and fold it down over the drip edge.

Some roofers cut the shingles parallel to the flashing s center ridge. Step 6 install the flashing. Remember to caulk the underside of the flashing with a sealant. Details concrete masonry roofing wrb flashing.

At the end of the vertical sidewall the step flashing shall be turned out in a manner that directs water away from the wall and onto the roof and or gutter while this is a nice diagram of how these flashings work don t forget our 5 th design rule. Others start with a 3 inch wide. Snipping off the corners of. How to do it determine cuts.

Apply an approximately 3 inch. The flashing shall be a minimum of 4 inches 102 mm high and 4 inches 102 mm wide. Before you apply the flashing you ll need to lay down a waterproof membrane. While roofing professionals occasionally use nails when flashing they must choose whether to nail to the roof plane or the vertical wall.

Two ways to flash roof edges. For the valley areas of the roof you will be using valley flashing. Especially if you live in an area that gets a lot of snow and ice. Install an underlayment centered in the roof valley.

Many roofers cut the shingles across because they say it s safer. One common method is to lay the edge metal under the eaves membrane and over the rake. 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.

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. No one of this affirmat. Make sure to cover the gap at the bottom of the raised ridge.