How to install metal roofing valleys

Entire width of new metal flashing properly extends over fascia at bottom of roof. Roof mastic applied along sides of valley flashing. Closed cut valley fully replaced with new metal valley flashing. Avoid the following common errors: Fasteners placed in the exposed center area Punctures in the center of the valley Failure to extend the entire width of the metal valley flashing beyond the eave of the roof.

Installing corrosive type metal flashing in valley Need Help with your Roof Repair? Click here for additional illustrations. It creates a break and makes sure that water, snow and ice gets channeled to the end of the valley. I'm going to put the valley in place, mark the underside of it and cut it so that it fits nicely where the two eaves join at this inside corner. I'm going to mark the valley and overhang it a little bit.

You'll see at the top that I've already cut it to fit the ridge line. With that done, I'm going to take the valley to the table, make my cuts and come back so we can install it. You can see that the edge of the valley has been cut so that it's in line with the edge of the eave trim. Between the metal and the valley, we're going to use tape seal to make sure that water can't lip itself underneath and roll back up underneath the valley.

We're ready to put the valley pan in place and put a screw through it temporarily, a little higher up so that we can work on putting our offset cleats in. Something else that I need to take into consideration is the valley and where the panels stop as they come towards the center of the valley.

For today's installation, we're giving a four-inch reveal here in the valley. To make sure that I stop my offset cleat at the four-inch mark, I've made these marks and I know it should stop my offset cleat right along this line.

Contact one of our installation experts for tips on how to install your ABC metal roofing panels. This site requires JavaScript to be enabled in your browser. The valley of the roof is formed where two slopes meet. Water collects there to flow off of the roof. There are two main types of valleys:. Open Valleys: With this type, the valley line is covered by a valley component instead of the main roofing panel system. First, an ice and water shield covers the decking.

Then, an underlayment goes over the barrier. Closed Valleys: Closed valleys are more often used with asphalt roofs instead of metal ones. The valleys are either woven into the shingles or they meet to form a straight line down the center of the valley.

All in all, an open valley is recommended with a metal roof. Metal valleys on a roof are important because metal is typically the most durable material. Metal valleys can add longevity and durability to almost any roof. One of the best things is that they effectively protect other parts of your roof, from the roof deck to the felt and shingles.

So, how do you put a metal roof on a valley? Unless you have plenty of experience with roofing, we suggest hiring a team of professionals to complete this project. After all, no one wants to be sitting on their roof in tears of frustration after a long day. Roof valleys are similar to gutters, except for the fact that they have steeper pitches and the stakes are much higher when it comes to installing valleys. Start by transferring the measurements to the back of the panel.

Most homes are composed of multiple additions that result in the need for valleys. Here are the steps to installing valley flashing for metal roofs:.