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Types Of Roof Valleys

Writer's picture: All Around Roofing, Siding & GuttersAll Around Roofing, Siding & Gutters

Most people would probably be unsure of what roof valleys are if you questioned them on the street. Roof valleys are intersections in a roof that indicate a shift in the roof's angle or direction. They are called natural valleys because that is exactly how they seem. Roof valleys are dangerous, whereas mountain valleys are frequently pleasant and tranquil. This is because it can be difficult to protect them from dampness and bad weather.


The good news is that Brava Roof Tile's long-lasting, dependable, lightweight roofing products are ideal for use on roof valleys. On the Brava YouTube channel, you can find examples of these materials in use that show how a roof valley should be built properly.



Roof valley types
Roof valley types


The Two Different Roof Valley Types


When delving deeper into the specifics of roof valleys, there are numerous sub-types, but for the sake of the homeowner, there are only two different roof valley types: closed and open.

Closed Roof Valleys

A closed roof valley requires the roofer to first install underlayment, a waterproof and ice-resistant substance that adheres to the roof decking and guards against ice and water damage. The shingles will next be installed by the roofer such that they overlap where the valley's two opposing planes come together. By closing the valley junction during installation, the underlayment material is entirely covered by the shingles. The shingles serve as the worn surface and valley lining of a closed roof.


Open Roof Valleys


An additional layer is added to the valley in the case of an open roof. A metal piece is put in the valley itself after putting the underlayment on the roof. This metal component comes in two different shapes: "V" and "W." The 'W' form can provide protection from water that flows over the valley and poses a risk of being forced beneath the sides of the shingles. In an open valley, the metal surface is left exposed and exposed to the elements after the shingles are fitted to cover a portion of the valley before being cut out of the valley region. Aluminum, copper, galvanized steel, stainless steel, or other metals are all acceptable.


The open roof valley is preferred, according to the majority of roofing contractors. However, there are some circumstances where a closed roof valley installation is the best option. You should talk to your roofer about the option of a closed roof valley if the shingle manufacturer suggests it for their product. The open roof valley is generally regarded to be less problematic over time. This is why: enhanced drainage When you want your roof's water to simply drain off—including rain, snow, leaves, and ice—metal is the ideal material. The exposed metal in an open roof valley makes it simple for anything to wash off your roof. There won't be time for debris to build up, preventing water from becoming trapped and penetrating the roof. Metal has an extremely long lifespan. The metal utilized in open roof valleys is unlikely to corrode more quickly than your roof's shingles. Metal looks fantastic and ages really well. abundant diversity In an open roof valley installation, a variety of metal kinds will function. This enables total personalization. For dramatic impact, some homeowners purposefully use contrasting materials. Installation simplicity: Additionally, open roof valleys are simpler to build. Other than the fundamental knowledge of roofing, no special abilities are needed. Since the open valley is simple to install, there are no delays in finishing your roof. The open-roof valley does have certain drawbacks. Its higher price is at the top of the list.



A Closed Roof Valley to Consider


The closed roof valley is frequently regarded as having the most visual appeal, as was already indicated. Many homeowners favor the seamless appearance of the closed roof valley application over the metal-lined open valley, and many homeowners also like the application's reduced cost. When installing a new roof, homeowners can spend less money while still receiving a beautiful finish by forgoing the use of metal flashing. The closed-roof valley architecture has the drawback that metal flashing tends to last longer.


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