The Ultimate Guide To Valley Metal 101 [2023 Update]

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The installation of valley metal is a necessary step in the roofing design process. The purpose of a roof valley is to reduce heat penetration and shelter the roof’s framing members from direct solar exposure.

In order for this to be possible, the valley should be designed properly, installed correctly, and maintained properly. Valley metal needs to be installed at all times during the construction and subsequent maintenance phases. With that in mind, let’s take a look at how valley installation works and what it entails.

What Is Valley Metal?

A valley metal is a pre-bent roofing material that is installed in the valley of your roof. This material is used to protect your roof from water damage or leaks.

The importance of proper valley installation

Valley installation is a crucial part of ensuring that your roof functions properly. Without a proper valley, water can pool on your roof and cause serious damage. In addition, a properly installed valley will help to direct water off of your roof more efficiently, which can help to prolong the life of your roof.

There are many reasons why proper valley installation is important. Valleys are one of the most important aspects of your roofing system. They are responsible for directing water off of your roof and into your gutters. 

If your valley is not installed properly, water can back up under your shingles and cause serious damage to your roof. In addition, if water backs up into your attic, it can cause mold and mildew to grow, which can be harmful to your health.

Proper valley installation is also important for the longevity of your roof. If your valley is not installed properly, it can cause your roof to sag and eventually collapse.

If you are having any problems with your valley, it is important to call a professional roofing contractor like Metal Roofing El Paso TX to come and take a look. They will be able to tell you if there are any problems with your valley and how to fix them.

Read Also: Benefits of Metal Roofing

What is the purpose of a valley on a roof?

The purpose of a valley on a roof is to capture rainwater runoff and direct it to the lowest point. This allows for a more efficient use of rainwater, and reduces the amount of water that needs to be pumped. 

Types of roof valley

There are two common types of roof valleys: closed valleys and open valleys. Each has its own advantages and disadvantages, so it’s important to understand the difference between the two before deciding which one is right for your home.

Closed valleys

The closed valley roof construction is often considered when shingles on one or both sides of the roof extends across the valley on the adjacent roof slope. This is done in order to protect the ice and water material that adheres to the roof decking and also properly protect the valley from the effect of water and weather conditions.

The closed valley roof is a great option for many homeowners due to its lower cost and improved aesthetics. To properly install a closed valley roof, the roofer will first install the underlayment. This will protect the roof decking from the effects of water and weather conditions. The shingles will then be installed, overlapping where the opposing planes of the valley meet. This will provide a weather-tight seal and ensure that your roof lasts for years to come.

First, the underlayment is installed. The roofer will then install the shingles due to that they overlap where the opposing planes of the valley meet.

On the downside, closed valleys can be more difficult to install, and they may not provide as much ventilation as open valleys.

Open valleys

Open valleys, on the other hand, are more popular in areas with moderate weather conditions. They’re easier to install and provide better ventilation, but they can collect more debris than closed valleys.

How to Install Valley Metal

Installing Valley Metal is a very easy process, and you can do it yourself if you have a few basic tools. Here’s how to take care of this quick and easy task:

  1. If your car has a roof rack or roof basket, remove it from the vehicle by unscrewing the bolts that hold it in place and pulling it away from the car.
  1. Unscrew any screws that hold your metal roof panels onto the car’s chassis, then lift them up and off the car body.
  1. Remove any clips that hold your metal panels to the body of your car.
  1. Clean off all dirt, grease, or oil from under your metal panels with a rag or brush before installing them back onto your car’s chassis and screws.
  1. Install new clips on any parts that need to be secured to secure them in place while they dry out or cure (if applicable).

Read Also: Roof Installation Process

How long does it take to repair or replace a roof valley?

It usually takes around half a day to replace the cement and re-bed an existing roof valley, but if the entire valley needs to be replaced, the job will take a full day.

How Much Does Replacing a Roof Valley Cost?

The cost of replacing a roof valley will depend on the size and type of roof, as well as the type of valley flashing that is being used. For a small roof, the cost may be as low as £300, while a larger roof may cost up to £375. If you are using a new type of valley flashing, the cost may be slightly higher.


Valley metal is an essential part of any roofing system and must be installed correctly in order to function properly. There are several different types of valley metal, each with their own benefits and drawbacks, so it is important to choose the right one for your project. With proper installation, valley metal can help protect your roof from water damage and extend its lifespan.

If your roof is leaking or the rainwater is not draining correctly, it is likely that you will need to replace your roof valley. A trained professional will be able to inspect your roof and determine what needs to be repaired or replaced. Most roofing companies offer free or discounted inspections when you use their services for repairs.
Valley flashing is a type of roof flashing that is used to direct water away from the intersection of two roof slopes. Valley flashing is installed along the length of the valley, and its purpose is to seal the valley and prevent water from seeping into the home.

Shingles are a roofing material made up of individual, overlapping sheets. They are typically made from wood, metal, or composite materials like asphalt or fiber cement. Shingles provide a way for water to run off of the roof, which minimises the chances of a roof valley leak.