Chimney Cap Installation in Montavilla, Roseway, and Hollywood, OR

Why a Chimney Cap Matters

A chimney cap might look simple, but it’s one of the most important parts of the entire system. It fits over the flue opening like an umbrella, allowing smoke to escape while keeping unwanted things out. Without it, you risk:

• Water intrusion: Moisture seeps down into the flue and masonry, leading to cracks, leaks, and costly repairs. In the PNW, rain is about 80% of the weather we get.
• Animal nesting: Birds and squirrels love warm, sheltered spaces. Unfortunately, a chimney without a cap is perfect for them.
• Clogged flues: Leaves and branches can collect in the vent, blocking airflow and increasing fire & carbon monoxide.
• Smoke blow-back: A cap with a wind guard (also known as dividers) prevents gusts from forcing smoke back into your living room.

Signs Your Chimney Cap Needs Repair

If you’ve lived through a few Portland winters, you know how relentless the moisture can be. A chimney cap keeps that water out, protecting everything below it — the crown, the flue liner, and even your firebox. Common warning signs your chimney may need a cap or replacement include:

• Rust streaks on the masonry
• Damp smells near the fireplace
• Crumbling mortar or water stains inside
• Evidence of nesting or debris in the flue

We offer straightforward inspections with clear photos and explanations so you can see exactly what’s going on before deciding how to proceed. Our goal is simple: protect your chimney before small issues become big repairs.

Choosing the Right Chimney Cap

Different chimneys need different kinds of coverage. Our team helps you find the best fit:

• Single-Flue Caps: Great for most homes — simple, secure, and easy to maintain
• Multi-Flue Caps: Provide full coverage for chimneys with multiple openings, creating a clean, finished look.
• Custom-Fit Caps: Perfect for older or non-standard chimneys, especially those in historic Portland neighborhoods.
• Copper Caps: Long-lasting, corrosion-proof, and a beautiful accent that weathers into a classic patina.

Built With Professional-Grade Materials That Last

Every cap we install is fabricated from high-quality, weather-resistant materials designed specifically for Portland’s wet, windy climate. The components are engineered to stay secure, resist corrosion, and protect your chimney season after season. Our stainless steel caps include:

• 24-gauge 304 2B stainless steel base, lid, and corner brackets for long-term durability.
• 16-gauge stainless steel wire screen with a 1″ x 1″ square pattern to keep out animals while maintaining proper airflow.
• Lid reinforced with a non-structural cross break, bent at a 15° angle (corner to corner) to shed water efficiently.
• Bolts threaded through 14-gauge 304 2B stainless steel, ensuring a tight, vibration-resistant fit.
• 1/4-20 x 1/2″ Hex Tap Bolts (18-8 stainless steel) paired with 1/4-20 finished hex nuts (18-8 stainless steel) for secure fastening that won’t rust out.

This combination of heavy-duty materials not only extends the life of the cap but also helps maintain the structural integrity of your chimney by keeping out moisture, debris, and wildlife—three of the biggest threats to chimney health in the Pacific Northwest.

Which Chimney Cap Is Right for Your Home?

Pick the statement that best matches your setup:

My chimney is masonry (brick or block).

Best Option: Stainless Steel Chimney Cap
Why: Stainless steel performs exceptionally well in Portland’s rain-heavy climate and mounts securely to clay flue tiles. It offers long-term corrosion resistance and is the most reliable choice for traditional brick or block chimneys.

I have a prefabricated or factory-built chimney.

Best Option: Galvanized or Stainless Steel Chase Cover
Why: Prefab chimneys depend on a chase cover to protect the entire top of the system. The original covers often rust through, causing leaks. A new stainless or galvanized chase cover provides a fully sealed surface that prevents water intrusion and structural damage.

My chimney has a stainless steel liner installed.

Best Option: Aluminum Liner “Mushroom” Top Plate Cap
Why: This style cap fits directly onto the liner’s top plate, creating a tight, weatherproof seal. It protects the liner termination, improves draft performance, and prevents water from seeping into the chimney structure.

My damper is old or I want better energy efficiency.

Best Option: Stainless Steel Cap/Damper Combo
Why: A cap/damper combo replaces a failing throat damper and seals the chimney at the top, dramatically reducing heat loss. Homeowners notice warmer rooms, fewer drafts, and improved control over the fireplace system.

I want the cap to blend in with the roofline.

Best Option: Color-Matched Caps & Covers
Why: We match colors as closely as possible—or offer the closest available finish—so your chimney protection looks intentional and cohesive rather than like an add-on.

Meet Portland Chimney & Masonry Inc.

We’re a locally trusted team specializing in chimney protection—from installing durable new caps to repairing and restoring the systems that keep your home safe and dry.