Every part, from underlayment to roof decking, is crucial to keeping your roof secure. A well-designed roof also needs to have flashing to ensure leak enforcement and prevent the penetration of water.
Flashing refers to a corrosion-resistant, thin sheet metal, which is bent into the desired shape. Moreover, roof flashing allows you to direct rainwater from vulnerable spots. The finest flashing is composed of premium, rust-resistant galvanized steel that has been coated with zinc. Flashing is positioned between shingles and underlayment in shingle roofing structures. In case of a metal roofing structure, the roofers will install the flashing on the panels.
Why Does your Roof Need Flashing?
The main purpose of building a roof is to save your home from weather elements like rain. Modern roofs made from quality materials last for several years. However, every roof has a few weak points that may cause leaks. That is why you need to install flashing on your roof.
Penetration and joints are common sources of leaks. For example, dormers are common joints between various slopes. On the other hand, chimneys and vents are penetrations to your roof. Installing a solar panel also leads to penetrations below or above your roof. Many roofers have placed the flashing in this area. Roof flashing is made of materials that water cannot penetrate. It allows the water to move from the joint and reach the gutter system.
If there is no flashing, the roof would cause leaks in due course. But you can reduce the risk of leaks by installing the flashing properly.
Roof Flashing of Different Styles
Let us talk about flashing types and the advantages of choosing them:
Continuous Flashing
Designed as a single metal piece, a continuous flashing runs throughout the length. You can install it where dormers have met your roof surface. As the shingle metal strip has no joints, there is a minimal risk of leaks. But, it cannot contract or expand with fluctuating temperatures.
Counter and Base Flashing
You can choose these flashing types to leverage the benefits of waterproof features. The base flashing is a continuous L-shaped design attached to the roof. However, your roof penetration will not be attached to the upper edge. Flashing that is visible on your roofing surface is counter-flashing. It allows extra contraction and expansion without damage. These flashings are the best choice for areas you cannot make waterproof.
Valley Flashing
This flashing type is a V-shaped channel, allowing water to run into the sites where your roof slopes meet. As a high amount of rainwater may pass through it, you should consider additional protection. You can leave the valley flashing exposed or hide it under shingles.
So, call your roofers to install roof flashing. You may also ask them about the cost to replace tile roof underlayment in Phoenix. Flashing has a limited lifespan; let your roofers check the flashing to find any signs of damage. High winds can cause the flashing to get dislodged.