When homeowners think about roof problems, they usually focus on missing shingles or storm damage. What many do not realize is that a large number of roof leaks start in areas that look fine from a distance. Roof leaks are most commonly caused by failing or missing roof flashing.
Roof flashing may not be the most visible part of your roof, but it is one of the most important. At Superior Roofing Company, we regularly see water damage that could have been avoided with properly installed and maintained flashing.
What Is Roof Flashing?
Roof flashing is a thin layer of material installed at points on the roof where water is most likely to enter. Its job is simple. It directs water away from seams, joints, and openings so it cannot seep into the roof structure.
Flashing is installed in places where the roof surface meets another surface or where there is a change in direction. Common areas include chimneys, skylights, roof valleys, vents, and where a roof meets a wall. These areas are naturally more vulnerable to leaks, even on a well-built roof.
Without flashing, rainwater can work its way under shingles and into the decking, insulation, and interior of the home.
What Is Roof Flashing Made Of?
Roof flashing is constructed using materials that can withstand long-term exposure to weather. The most popular materials are aluminum, galvanized steel, copper, and stainless steel. Aluminum is a favorite in residential roofing because it is lightweight and non-corrosive.
Galvanized steel is tough and affordable, but with time, it may rust if the protective layer is destroyed. Copper, known for its durability and longevity, is often used on older homes or for high-end architectural projects. In some instances, stainless steel is used in locations where the weather is very harsh or that are exposed to salt.
The appropriate material is based on the type of roof, the local climatic conditions and the budget.
Common Types of Roof Flashing
Different areas of a roof face different water challenges. This is why several types of flashing are used. Each type protects a specific area and guides water safely off the roof.
1. Step Flashing
Where a roof joins a vertical wall, e.g., along dormers or side walls, step flashing is employed. It is laid in layers, and each piece overlaps the shingle below it. This layered arrangement enables the water to run down the roof in a natural manner without hitting the wall or the shingles.
2. Valley Flashing
Valley flashing is fitted in valleys along roofs, where two roof slopes meet. These spaces hold a lot of rainwater in case of storms and are highly susceptible to leakages unless they are sealed adequately. Valley flashing helps in directing the water down the roof and into the gutters.
3. Chimney Flashing
It is commonly made up of multiple pieces that work together. Base flashing is used where the chimney meets the roof, and counter flashing is secured into the chimney itself. Together, they create a firm seal that keeps water from entering around the chimney.
4. Vent Pipe Flashing
This fits around pipes that pass through your plumbing vents or exhaust vents on the roof. These places can start leaking if the flashing gets damaged, comes loose, or just wears down with time.
Proper Installation Matters
No matter the type, roof flashing has to be the right size, placed correctly, and secured properly to do its job. If it is poorly installed, leaks can still happen even when the flashing material itself is in good shape.
Why Roof Flashing Matters
Most roof leaks do not start in the middle of the shingles. They usually begin at seams, joints, and openings in the roof. Flashing covers up these weak areas and keeps the water out of place.
Good flashing helps prevent water from reaching the roof decking, insulation, drywall, and framing. It also reduces the chances of the occurrence of molds due to moisture entrapment within the house. Proper flashing helps a roof to last longer and minimizes the expensive repairs in the long run.
When flashing fails, the damage develops slowly and may not be noticed until it shows up inside the house.
Professional Flashing Installation by Superior Roofing Company
We understand at Superior Roofing Company that the little things count. A good roofing system involves proper flashing installation. Our crew also takes the time to check flashing and fit it properly to make sure that your home is not exposed to water intrusion.
If your roof is leaking, showing signs of wear and tear, or you simply want a second opinion, our roofing specialists can take a closer look. We take the time to explain what is happening, what needs attention, and what can wait, so you can make better choices without pressure.
If something does not seem right with your roof or flashing, reach out to Superior Roofing Company and schedule an inspection with our team.