Stop Water Damage with Expert Chimney Leak Repair in Portland, OR

If you’ve noticed water stains on your ceiling, damp spots near your fireplace, or musty odors coming from your chimney, you’re likely dealing with a leak – and the longer it goes unaddressed, the more expensive the repair becomes. At Five Star Chimney Repair, we specialize in identifying the exact source of chimney leaks and fixing them fast for those in Portland, Aloha, Keizer, Oregon City, McMinnville, and surrounding areas. From chimney flashing and cap installation to professional waterproofing, we handle it all.

Adobe Stock image of an owl under a chimney cap of a broken down chimney.
Original photo of a before-and-after chimney repair and cap installation by Five Star Chimney Repair.

What Are the Most Common Causes of a Chimney Leak?


Water is the number one cause of chimney deterioration – and chimney leaks rarely come from a single, obvious source. At Five Star Chimney Repair, our inspection process evaluates every potential entry point so we can identify the full picture before any repair work begins. We’ll make sure every vulnerability is identified, so you’re not fixing one entry point while water continues entering through another.

  • Damaged or failed chimney flashing. If the metal barrier where the chimney meets the roofline separates or corrodes, water can travel inside the home.
  • Missing or deteriorated chimney cap. Without a properly fitted cap, rain, snow, debris, and animals enter the flue directly.
  • Cracked or porous masonry. Brick and mortar are naturally porous, and the chimney’s exterior absorbs water with every rain event, if not protected.
  • Compromised chimney crown. This concrete slab can crack and crumble, allowing water to pool and seep directly into the masonry below.

Can a Chimney Leak Cause Damage to My Roof or Interior Walls?


Yes – because chimneys penetrate the roof and connect the exterior to the interior of the home, a leak at any point in the chimney system can travel far beyond the fireplace itself. Water that enters through failed flashing doesn’t stay at the roofline – it migrates along the roof deck, soaks into the underlayment, and infiltrates the attic structure.

Likewise, water entering through a missing cap or cracked crown runs down the flue and seeps into the framing and drywall surrounding the fireplace chase.

Roof Deck Rot
Mold Growth
Insulation Damage
Interior Wall Staining
Fireplace Surround Damage
Electrical Hazards
Damaged Interior Woodwork
Original photo of a before-and-after chimney repair by Five Star Chimney Repair.

Common Questions About Chimney Leak Repair Services


What is chimney flashing & what do flashing repairs cost?

Chimney flashing is the metal barrier installed where your chimney meets the roofline, designed to create a watertight seal between two surfaces that shift independently with temperature changes and structural settling. When flashing cracks, separates, or corrodes, water enters along the roof deck and travels into the attic, walls, and ceiling – often far from the chimney itself.

At Five Star, on average, flashing repair services will be around $850. Flashing repair services include a full inspection for rust, gaps, and separation, as well as repair or full replacement of damaged sections, resealing of the chimney-to-roof connection to eliminate all leak pathways.

What is ChimneySaver waterproofing? How much does waterproofing cost?

Brick and mortar are naturally porous, which means every rain cycle and freeze-thaw event is slowly working against your chimney’s masonry, even when no visible damage is yet present.

Our ChimneySaver waterproofing services average around $400. ChimneySaver is the professional-grade waterproofing treatment Five Star uses to stop that process before it leads to spalling brick, crumbling mortar, and structural failure.

Unlike generic store-bought paints or surface sealers, ChimneySaver is a penetrating, breathable formula that soaks into the masonry, creating a hydrophobic barrier that repels water from the outside, while still allowing moisture vapor to escape from within.

How much does a new chimney cap cost?

Typically, a new chimney cap costs around $250.

At Five Star, we inspect the cap and chimney opening for missing hardware, rust, corrosion, improper fit, and debris buildup. If the existing cap can be repaired and resealed, we do that. If it’s beyond repair or missing entirely, we install a properly fitted replacement cap.

We’ll always work with your needs, setup, and budget to fit the most appropriate fit for your household and preferences.

Do I need a full chimney inspection before leak repairs can begin?

In most cases, yes. An inspection allows us to identify every source of water intrusion, not just the most visible ones. It also determines whether underlying masonry damage needs to be addressed before waterproofing or other treatments are applied.

Skipping the inspection and applying a surface fix often results in recurring leaks because the root cause wasn’t fully identified. Our inspection and repair process is designed to resolve the issue completely in as few visits as possible – typically one.

How do I know if my chimney flashing is failing?

The most common signs of flashing failure include water stains on ceilings or walls near the fireplace, visible rust or separation at the chimney-to-roof junction, dripping sounds inside the flue after rain, and daylight visible between the flashing and the chimney exterior.

In some cases, flashing looks intact from the ground, but has small gaps or cracks that only become apparent on close inspection. We recommend having flashing inspected any time you notice moisture near your fireplace or after significant weather events.

what’s the difference between a chimney cap and a chase cover?

They serve a similar purpose – protecting the top of your chimney system from water, debris, and animals – but they’re designed for two different chimney types.

  • A chimney cap is installed directly over the flue opening and features a metal lid and mesh sides that block rain and wildlife.
  • A chase cover is a sloped metal cover that spans the entire top of the chase, sealing the whole structure rather than just the flue opening.

Portland Homeowners Trust Us


Read what your neighbors have to say about our chimney leak repair services.

  • I can’t say enough good things about Five Star Chimney and the work they did on my chimney. After the storm we had a few weeks ago, I discovered water seeping down the cinderblocks and decided I needed to have it looked into. I was fortunate to find Five Star Chimney Repair. They applied professional water sealing and did a crown repair to the chimney.
    Nancy D.
  • Five Star Chimney Repair rebuilt my chimney and made sure that there would be no more leaks in the flashing. It looks so nice now! Thank you so much guys! I wish I would have found you sooner!
    Sheryl H.
  • Five Star Chimney Repair did an excellent job repairing the chimney flashing and sealing up the top cap. They also thoroughly explained each step.
    Andrew L.
  • Five Star Chimney Repair was genuine and very knowledgeable. They repaired our chimney and installed a custom chimney cap, quickly, professionally, and economically.
    Julie D.
  • Very easy to work with and we were able to get a quote from pictures of the damage. The quote was accurate when the job was done. I could tell they took a lot of pride in getting things right. The chimney looks a lot better and isn’t leaking into the house now.
    Caitlin S.

Why Portland Chooses Us


We believe in honest work, clear communication, and treating your home with the utmost respect. When you hire Five Star Chimney Repair, you’re partnering with true professionals.

15 Years Experience

Over a decade of hands-on chimney and masonry expertise

Owner on Every Estimate

You work directly with the owner for peace of mind through every job

Family-Owned & Local

Deep roots in the Portland communities we serve

Fast Turnaround Times

We prioritize prompt service so you stay more comfortable

Locally Owned & Operated


We are proud to travel across the Portland metro area and surrounding Pacific Northwest regions to deliver top-tier chimney sweeping services and masonry repairs. Our roots are right here in the community.

Communities We Reach

  • Portland
  • Beaverton
  • Hillsboro
  • Tigard
  • Salem
  • Lake Oswego
  • West Linn
  • Gladstone
  • Astoria
  • Clackamas
  • Gresham

Chimney & Hearth Resources


Practical advice and expert insights to help Portland homeowners keep their chimneys in peak condition.

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Let Us Assess Your Leak Damage Before It Gets Worse


A chimney leak won’t fix itself – it compounds and spreads. What starts as a small gap in the flashing or a missing cap can quickly turn into saturated masonry, rotted woodwork, and costly structural repairs, if left unaddressed. Five Star Chimney Repair is a locally owned, CSIA-certified team with 15 years of experience and a simple commitment: show up fast, find the source, and fix it right. Call today to schedule your next repair.


A fireplace and chimney are two different system that require different services – if you need fireplace repairs, don’t hesitate to reach out.