Everything You Need to Know About Chimney Flashing & Its Importance in Preventing Leaks

Chimney flashing is an important part of home maintenance, as it effectively prevents leaks and maintains the structural integrity of your home. Without regular inspections and proper chimney flashing, leaks can lead to roof damage, wood rot, or damage to fireplace systems. Understanding everything you need to know about chimney flashing can protect your home from costly repairs and potential water damage.

What is Chimney Flashing?

Chimney flashing is an important component in your roofing system that seals the gap between your chimney and the roof. Chimney flashing uses metal pieces such as copper, aluminum, or steel that are layered to cover mortar joints and shingles. Chimney flashing is used to prevent water from leaking in at the connection point.

The two most common types of flashing used around chimneys are:

1. Step Flashing: This is installed along the sides of the chimney, layered under each row of shingles in a stair-step pattern to direct water away from the chimney.
2. Counter Flashing: Counter flashing is installed on the chimney, overlapping the step flashing and built into the masonry. This helps to create a watertight seal and directs water away from the chimney.

Why is Chimney Flashing Important?

1. Prevents Water Damage: The main function of chimney flashing is to stop water from seeping into the gap between the chimney and the roof. Without proper flashing, water can seep into these spaces, causing leaks, mold, and damage to the roof structure.
2. Protects Home Structure: Water leaks can weaken your home’s structure, damaging the roof, walls, and foundation, which can lead to costly repairs. Chimney flashing prevents your home from damage, preventing the need for expensive repairs.
3. Lowers Energy Costs: Leaks and gaps can cause drafts, making your heating and cooling systems work harder to maintain a comfortable temperature. Keeping your chimney flashing in good condition can improve your home’s energy efficiency. 
4. Prevents Mildew & Mold Growth: Moist environments can grow mold and mildew. Properly sealing your chimney with flashing helps prevent these issues, which can affect your health and indoor air quality.

Signs of Chimney Flashing Problems

Early detection of chimney flashing issues can save you from major damage and costly repairs. Here are some signs to look out for:

• Water Stains: Water stains on your ceiling or walls near the chimney are a sign of flashing problems.
• Rust or Corrosion: Rusty or corroded flashing materials indicate deterioration and the need for replacement. 
• Damaged Flashing: Holes, cracks, or bent sections of flashing can cause leaks and should be quickly repaired.
• Mildew or Mold: Unexplained mold or mildew near your chimney may indicate water leaks and flashing issues.

Need Chimney Flashing in Portland & Surrounding Areas?

Chimney flashing plays an important role in preventing leaks and protecting your home. Understanding its purpose and how to maintain proper chimney flashing can ensure your home is safe and structurally sound. Lifetime Chimney is a certified chimney company that offers expert chimney flashing installation and flashing repair in Albany, Corvallis, Silverton, Portland, Beaverton, and surrounding areas. Contact our team today to learn more about our chimney flashing services.