What is the Purpose of Roof Flashing?
A well-built roof is essential for protecting your home from the elements, but keeping water out often depends on a small but powerful feature—roof flashing. Roof flashing directs water away from vulnerable areas, like chimneys, valleys, and vents, to prevent leaks and structural damage.
Knowing its purpose can help homeowners make better decisions about long-term roof care. This guide starts with what roof flashing is, explores how it protects your home, and the steps you can take to keep it in great shape.
Roof Flashing 101
Roof flashing might not be the first thing that comes to mind when thinking about roof care, but it plays a crucial role in keeping your home dry.
Flashing is made of thin pieces of metal—typically aluminum or galvanized steel—installed around roof features that are prone to water leaks, such as chimneys, vents, and skylights.
Roof flashing is strategically placed to form a water-resistant barrier around these areas. Rather than pooling or seeping into gaps, rainwater flows over the flashing and off the roof, protecting your home’s structure.
Where You’ll Find Roof Flashing
You'll usually find it in high-risk areas for leaks, including:
Around chimneys and skylights
Along valleys where two roof planes meet
Around roof edges and corners
Near roof vents and pipes
Why This is a Critical Roofing Component
Roof flashing acts as a first line of defense against leaks by guiding water off the roof instead of allowing it to seep into small gaps or seams.
Flashing creates a barrier where shingles alone might not be enough, especially around areas like chimneys, valleys, and roof vents. The objective is to redirect rainwater to the gutters so it doesn't cause pooling or damage.
Without effective flashing, water can gradually penetrate the roof’s surface, leading to issues like wood rot, mold, and even structural weakening.
Common Roof Flashing Problems and Their Causes
Over time, roof flashing can experience wear and tear, which impacts its ability to keep water out.
Rust and corrosion weaken metal flashing, especially if it’s exposed to harsh weather over time.
Loose or lifted flashing often results from strong winds or aging sealants, leaving gaps where water can seep through.
Cracks or bends can appear as flashing ages or from natural expansion and contraction during temperature changes.
Roof Flashing Care for You vs. Professionals
When it comes to roof flashing, knowing what you can handle on your own and what needs a professional’s eyes are required.
DIY-Friendly Flashing Care
Routine maintenance tasks can help flashing stay effective over time:
Remove debris from around flashing to prevent water buildup
Apply a thin bead of roofing sealant if you notice a small gap between flashing and the roof surface
Check for signs of wear after major storms
When to Rely on a Professional
For repairs beyond minor upkeep, a professional’s expertise is key:
Loose, rusted, or cracked flashing often requires replacement to prevent leaks
Attempting to repair large flashing issues on your own could lead to incomplete seals and further damage
Consider an inspection if you’re unsure about your flashing’s condition or if you notice early signs of water intrusion indoors.
Proactive Maintenance Tips
Simple, consistent care can help flashing do its job effectively and extend the lifespan of your roof. Here’s what you can do to prevent issues and minimize the need for repairs:
Inspect flashing twice a year and after significant weather events. Catching small issues early prevents more costly repairs later.
Clear gutters and downspouts regularly. Overflowing gutters can direct water onto roof flashing, increasing the risk of leaks.
Schedule professional roof inspections annually to ensure flashing and other roof components are in good shape.
Conclusion
Roof flashing may be a small feature, but it’s vital for keeping your home dry and protected. With regular checks and timely maintenance, you can prevent leaks and avoid costly repairs.
For a professional assessment, Taylor Made offers expert inspections to help ensure your flashing and roof are in top shape, keeping your home safe from water damage year-round.
