A chimney adds character and warmth to a home, but when chimney leaks start appearing, they can quickly become a serious issue. Water damage from a leaking chimney can lead to mold growth, wood rot, and even structural problems if left unaddressed. One of the most common culprits? Failing flashing—the material that seals the connection between the chimney and the roof.
Fortunately, a professional roofing company can identify and fix flashing leaks before they cause expensive damage. Here’s what you need to know about chimney leaks, how flashing works, and why proper flashing leak repair is essential for a watertight home.
Why Is My Chimney Leaking?
A chimney can develop leaks for several reasons, but the most common issues involve damaged flashing, cracked masonry, or missing sealant. The flashing is the thin metal material—usually aluminum, copper, or galvanized steel—installed at the base of the chimney where it meets the roof. It acts as a barrier to prevent water from seeping into the roof structure.
Over time, exposure to wind, rain, and fluctuating temperatures can cause flashing to loosen, rust, or crack, allowing water to enter. If you notice water stains on ceilings near the chimney, peeling paint, or damp walls, you likely have a flashing leak that needs immediate attention.
Studies show that over 90% of roof leaks occur at flashing points—including chimneys, skylights, and vents. This makes timely flashing leak repair critical in preventing further roof damage.
How a Roofing Company Repairs Chimney Flashing Leaks
Fixing chimney leaks isn’t just about patching up the problem—it requires expert assessment and proper installation to ensure a lasting solution. Here’s how a professional roofing company seals and repairs flashing.
Inspecting the Chimney and Roof for Leaks
Before any repair work begins, a roofing contractor will conduct a thorough inspection of the chimney and surrounding roof areas.
They’ll check for:
- Loose or corroded flashing
- Cracked or missing mortar in the chimney structure
- Shingle damage around the chimney base
- Signs of water penetration inside the home
A professional siding company may also check for water damage on siding near the chimney, as improper drainage can cause leaks to affect more than just the roof.
Removing Old or Damaged Flashing
If the flashing leak is due to rust, separation, or improper installation, the old flashing must be removed entirely. This includes carefully detaching any surrounding roofing materials to avoid further damage.
Installing New Weatherproof Flashing
A quality roofing company will replace old flashing with durable, weather-resistant materials such as aluminum, copper, or galvanized steel. The new flashing is securely fitted around the chimney and layered properly to ensure water flows away from the structure.
A proper installation involves:
- Step flashing – Installed in sections between each row of shingles for added protection.
- Counter flashing – Embedded into the chimney’s masonry to form a watertight seal.
- Sealant application – High-quality roofing sealant is used to reinforce the flashing and prevent leaks.
Repairing Roof Shingles and Waterproofing the Area
Once the flashing leak repair is complete, the roofing team will replace any damaged shingles and apply additional waterproofing as needed. This final step ensures that the entire area is reinforced against future leaks.
Signs Your Chimney Flashing Needs Repair
It’s not always easy to spot chimney leaks until significant damage has already occurred. However, homeowners should watch for these warning signs:
- Water stains on ceilings or walls near the chimney
- Musty odors or mold growth in the attic
- Peeling paint or wallpaper around the chimney
- Visible rust or gaps in flashing
- Deteriorating mortar joints in the chimney structure
If you notice any of these issues, don’t wait—water damage can spread quickly, leading to costly roof repairs.
How to Prevent Chimney Leaks in the Future
Preventative maintenance is key to avoiding costly chimney repairs down the road. Here are a few steps homeowners can take to keep their chimney flashing in top condition.
Schedule Regular Roof Inspections
A professional roofing company should inspect your roof at least once a year to catch early signs of damage. This is especially important before and after winter when ice, snow, and freezing temperatures can cause flashing to shift or crack.
Clean Gutters and Downspouts
Clogged gutters can redirect water toward your chimney, increasing the risk of leaks. Keeping gutters and downspouts clean ensures proper water drainage and protects both your roof and siding.
Check for Loose Flashing After Storms
Strong winds, heavy rain, and ice buildup can loosen or damage flashing, leading to leaks. After major storms, homeowners should visually inspect their chimney flashing and surrounding roof areas for any visible gaps or movement.
Hire a Professional Roofing and Siding Company
When it comes to flashing leak repair, DIY solutions rarely hold up against the elements. Improperly installed flashing can make the problem worse, leading to more extensive water damage. Hiring an experienced roofing company ensures the job is done correctly the first time, with durable materials and professional-grade sealing techniques.
Why Work with Atlas Roofing & Siding?
If you’re dealing with chimney leaks or suspect flashing damage, it’s essential to act fast. At Atlas Roofing & Siding, our team specializes in flashing leak repair, chimney waterproofing, and full-scale roof maintenance. We work with top-quality materials to ensure long-lasting protection against leaks and water damage.
Don’t let a minor chimney leak turn into a major structural issue. Contact us today for a professional roof inspection and flashing repair.
Final Thoughts
A leaking chimney is more than just an inconvenience—it’s a serious risk to your home’s structure. Flashing leak repair is one of the most effective ways to prevent water damage and extend the lifespan of your roof. By working with an experienced roofing company, homeowners can ensure their chimney flashing remains secure, sealed, and weatherproof for years to come.
If you suspect a chimney leak, don’t wait for the damage to worsen. Reach out to a professional roofing and siding company to get the repairs you need before costly problems arise.
