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What is Roof Flashing?
Roof flashing is a thin, waterproof material installed in areas where two surfaces meet on a roof. It creates a watertight barrier, preventing rain from penetrating through gaps and joints.
✅ Common Locations for Roof Flashing:
✔ Chimneys & Skylights—Prevents water from entering around openings in the roof.
✔ Vent Pipes & Exhaust Fans—Seals around protrusions to stop leaks.
✔ Roof Valleys & Edges—Channels water away from vulnerable roof areas.
✔ Dormer Windows & Parapet Walls—Protects against wind-driven rain.
🚨 Why It’s Important:
When roof flashing deteriorates, loosens, or corrodes, water can infiltrate your home, causing:
✔ Leaks & water stains inside your home.
✔ Mould & mildew growth, which can affect indoor air quality.
✔ Rotting wood & weakened structural integrity.
✔ Expensive roof and interior repairs.
Properly installed and well-maintained roof flashing is crucial to preventing costly water damage.
2. Causes & Solutions for Roof Flashing Damage
Flashing problems can arise due to several factors. Here’s what causes these issues and how to fix them.
🚨 Poor Installation
Flashing must be securely sealed and overlapped correctly to direct water away. Incorrect installation can leave gaps where water seeps in, causing leaks and structural damage.
✅ Solution:
● Inspect flashing joints and seals regularly.
● Reapply waterproof sealant to any areas that appear loose.
● Hire a professional roofer to ensure flashing is installed properly.
🌡️ Temperature Fluctuations
Metal flashing expands and contracts with temperature changes, leading to loose or cracked seals over time. This is particularly problematic in extreme climates with hot summers and cold winters.
✅ Solution:
● Choose flexible flashing materials that withstand expansion and contraction.
● Inspect flashing every season for signs of movement or gaps.
● Re-secure loose flashing with screws or adhesives.
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3. Types of Roof Flashing & Their Functions
There are different types of flashing, each serving a specific purpose in protecting your home.
📍 Step Flashing (For Chimneys & Walls)
● Installed in layers between roof shingles and vertical walls.
● Channels water downward, preventing leaks where walls meet the roof.
📍 Valley Flashing (For Roof Valleys)
● Placed in roof valleys, where two slopes meet.
● Prevents water from pooling and seeping into the roof structure.
📍 Drip Edge Flashing (For Roof Edges)
● Installed along eaves and gables.
● Guides water away from fascia boards, preventing rot.
📍 Vent Pipe Flashing (For Roof Protrusions)
● Seals around vent pipes and exhaust fans.
● Prevents leaks at vulnerable roof openings.
Each type of flashing plays an important role in keeping your roof waterproof and durable.
4. How to Maintain Roof Flashing & Prevent Leaks
Proper flashing maintenance can extend its lifespan and reduce the risk of costly roof repairs.
✔ Inspect Flashing Twice a Year
● Check flashing during spring and fall to identify early signs of damage.
● Pay extra attention to chimneys, skylights, and vent pipes.
✔ Keep Gutters & Downpipes Clear
● Blocked gutters can cause water to back up and seep behind flashing.
● Regular gutter cleaning helps maintain proper water flow.
✔ Reapply Sealant When Needed
● Over time, flashing sealant can crack or dry out.
● Apply a new waterproof sealant every 2-3 years.
✔ Replace Old Flashing During Roof Repairs
● If your roof is being replaced or repaired, consider installing new flashing for maximum protection.
● Don’t wait for visible leaks—proactive replacement prevents major issues.
📞 Want to keep your flashing in top condition? Contact Pinnacle Plumbing for professional inspections and repairs!
Final Thoughts: Protect Your Home with Quality Roof Flashing
Roof flashing is an essential part of your home’s water protection system. If it fails, leaks can develop quickly, leading to structural damage, mould, and expensive repairs. By understanding common flashing problems and taking preventative action, you can extend the lifespan of your roof and protect your home.
🚨 Need a roof flashing inspection or repair? Call Pinnacle Plumbing today for expert services! 🚨