Olympia Chimney Chimney Cap Installation Nationwide

Olympia Chimney Chimney Cap Installation: The Bellevue Owner’s Guide

We stock and install Olympia Chimney-compatible chimney caps across Bellevue, with most installations running $340-$620 depending on flue size, cap style, and whether the flue tile needs trimming. Most Bellevue homeowners who call us notice the problem after a windstorm off Lake Washington sends water down the flue, or when they spot rust streaks on the chimney crown from the ground. Corrine Halstead and our crew carry the full Olympia Chimney sizing range on our trucks, so we can usually measure, fit, and install in a single visit.

Call (425) 696-0387

Which Olympia Chimney Models This Applies To

Olympia Chimney caps fit their manufactured stainless steel chimney systems, not generic masonry flues. The critical match points are the flue diameter (6″, 7″, 8″, or 10″ for residential units in Bellevue) and the collar height, which varies between the Olympia 304-series and 316-series lines. The 316-series uses a taller collar with a deeper overhang, meant for wet climates like ours where wind-driven rain is routine.

We see the most confusion around the Olympia “universal” adapter plate, which fits both series but seals poorly on 304 collars if the installer doesn’t add the secondary weatherstrip. Our trucks stock both OEM Olympia collars and the Gelco equivalent, which matches the 316 spec at a lower price point. We source through Haven’s buying network specifically to keep customer prices honest.

Before we order anything, we measure your flue tile exposure with a tape, not a guess. The camera doesn’t guess. Neither do I.

Signs Your Olympia Chimney Chimney Cap Is Failing

• Rust-colored streaks on the chimney crown or siding. Olympia’s 304-grade stainless resists corrosion, but the spot-welded seams at the collar base fatigue after 8-12 years in Bellevue’s salt-air environment. Once the seam opens, capillary action pulls moisture inward even when it’s not raining hard.
• Water in the firebox or rust on the damper. A cap with a cracked mesh screen or missing storm collar lets water track directly down the flue. In Lakemont and other Bellevue neighborhoods with mature tree cover, debris loads accelerate screen deterioration.
• Downdrafts or smoke spillage on windy days. The Olympia cap’s internal baffle is designed to create positive pressure; if the baffle tabs corrode or the cap shifts on a loose collar, Lake Washington’s prevailing westerlies push straight down the flue.
• Bird or squirrel activity at the flue top. Mesh screens on older Olympia caps use 5/8″ weave, which raccoons can deform. Current spec is 3/4″ stainless mesh, which we stock as standard.
• The cap is visibly tilted or missing after a storm. Olympia’s twist-lock collar is secure when new, but thermal cycling loosens the fit. We replace the collar and add stainless screws on every reinstall, not just the cap itself.

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Replacement Cost & What’s Included

What drives the range: flue diameter, whether your existing collar is reusable, and roof access. Steep pitches above 6/12 or tile roofs in Bellevue’s Somerset area add ladder time. Every quote is written before work starts, with the part number, warranty term, and final price listed. No exceptions. The 365-Day Done Right Promise covers the installation; manufacturer’s defect coverage runs 10 years on 316-grade stainless, 5 years on 304.

DIY or Call Us?

Checking your cap from the ground with binoculars is safe and useful. Note the tilt, rust pattern, and whether mesh is intact. What you cannot safely check from a ladder is the collar seal condition or the flue tile edge for spalling, which determines whether the new cap will seat properly.

We do not recommend homeowner roof access on pitches above 4/12, or any work within 10 feet of overhead power lines, which is common on Bellevue’s older Lake Hills lots. The cap itself is light, but dropping it down the flue or cracking the tile crown turns a $400 job into a $1,800 rebuild. Our technicians are background-checked, uniformed, and licensed; you’ll get a text when we’re en route with the tech’s name.

Call (425) 696-0387 for a written estimate. Estimates are free, and we bring the sizing gauge to confirm fit before any work begins.

FAQs