Are you trying to learn about all the components of a roofing system?
You may already know about shingles, drip edges, gutters, and, in this article we will dig into valley metal.
In this article, we’ll guide you through what valley metal is, how beneficial it is to your roof, and how to install one.
What Is a Valley Metal?

A metal valley is a pre-bent roof material that protects the valley of your roof prone to water damage or leaking.
The proper way to install a metal valley is on top of an ice and water shield, creating an effective passageway for rainwater into your gutter and keeping your roof dry and well-protected.
Why Is a Metal Valley Beneficial to Your Roof?
A roof valley is an area in your roof where two slopes meet that take a V angle shape.
Absent proper maintenance and care, rainwater, debris, ice, and mold can easily pool in your valley, leading to leaking and damages your roofing shingles.
For this reason, it’s vital to choose the right materials for your roofing. Choosing metal provides a durable, long-lasting solution compared to most materials.
Metal roofing or metal valleys are also highly versatile and can protect your roofing from strong winds, hail, rain, and falling debris.
How to Install Valley Metal
In this section, we’ll take you step-by-step on how to install or flash your valley.
Flashing is a thin layer of metal roofers use to direct rainwater away from areas that can potentially leak inside your home and cause damage.
We’ll use a W-type metal to flash your valleys:
Step 1: Clean any debris in your valley, such as nails, sawdust, tree branches, etc.
Step 2: Apply roofing membrane over your clean valley by starting along the eaves.
Step 3: Fold the upper part of the roofing membrane over the ridge and cut the bottom part along the drip edge.
Step 4: Install roofing underlayment, preferably an ice and water shield, then install your first piece of valley flashing.
Step 5: Cut the bottom of your flashing piece, then trim it further for a clean finish. Once done, fold it over the drip edge, ensuring you cover any gap at the bottom of your raised ridge to keep any ice, pests, or bugs out.
Step 6: To join the 2 pieces of flashing, add roofing cement to your lower piece and upon installing the upper piece, make sure there’s a 6-inch overlap.
Step 7: Fold the top of the flashing piece over the ridge. Nail the flashing down to your roof every 10 inches along the outer edges of the flashing.
Here’s a video you can use as a guide:
Can You Show Me An Example Of Bad Valley Metal Installation?

If you’re looking for an effective and durable way that increases the longevity of your roof valley, choose metal. Before installing, make sure you consult a roofing professional to lead with the installation.
We hope this review was able to help you! Before you go, we’d love to hear your thoughts below!