Olympia Chimney Chimney Cap Installation Nationwide

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

Olympia Chimney chimney cap installation in Boston typically runs $340-$680 for most single-flue setups, with multi-flue or custom-fabricated caps reaching $890-$1,400. We stock Olympia Chimney-compatible caps on our trucks and can measure, match, and install same-day in most Boston neighborhoods. Most owners realize their cap has failed after finding rust flakes in the firebox, water stains on the ceiling near the chimney breast, or hearing something rattling loose up top during a March nor’easter.

Call (857) 597-5950

Which Olympia Chimney Models This Applies To

Olympia Chimney manufactures caps across several product lines, and the right match depends on your flue type and existing chase cover or crown condition. The Gelco Series 5 and Series 8 caps are the most common we encounter in Boston’s pre-war housing stock, particularly on homes in Jamaica Plain and Roslindale where terra cotta flue tiles still predominate. Stainless steel models carry the “OL” prefix on the spec tag, usually found stamped on the underside of the mesh skirt or on a small plate near the collar.

Here’s where owners get tripped up: Olympia Chimney caps are sized to the flue’s inside dimension, not the outside. A 13×13 flue tile takes a different collar than a 13×13 flue with a liner already installed. We measure with a flue ruler on every job because ordering by “what looks about right” from the ground has wasted too many afternoons. Hearthstone Chimney Co. is an independent service provider, not affiliated with Olympia Chimney, though we specify their caps regularly for salt-air durability.

OEM Olympia Chimney caps carry a lifetime warranty on the stainless body but exclude the mesh in coastal zones. We also source aftermarket equivalents from Famco and Copperfield when the existing mounting hardware is non-standard or when a homeowner needs a cap yesterday and our Olympia stock is committed on another job.

Signs Your Olympia Chimney Chimney Cap Is Failing

• Rust streaks down the chimney face. Olympia Chimney’s galvanized caps sold in the 1990s and early 2000s were honest about their limitations: Boston’s freeze-thaw cycling plus road salt aerosol chews through the coating in eight to twelve years. Once the base metal is exposed, the cap becomes a water funnel instead of a water shield.
• Mesh sides pulled away from the frame. Squirrels and raccoons test every cap in Brookline and Newton eventually. Olympia Chimney’s heavier-gauge stainless mesh resists better than hardware-store alternatives, but if the crimped seam has separated, the animal has already won. The gap also admits embers during shoulder-season burns.
• Cap sitting crooked or slid downslope. The mounting brackets on older Olympia Chimney caps were spot-welded at four points. After fifteen Boston winters, those welds fatigue. A cap that has shifted even an inch is no longer protecting the flue opening directly.
• Water in the firebox after heavy rain. This usually means the cap’s collar has separated from the flue tile, or the lid itself has deformed from ice load. Olympia Chimney’s domed designs shed water well when true, but a dent from a falling branch or ice dam changes the geometry.
• Spalling brick or deteriorated mortar at the chimney top. The cap was supposed to prevent this. If the crown beneath the cap is now crumbling, the cap has been compromised long enough that water has been washing down the flue walls and exiting at the shoulder. The cap replacement and crown repair often need to happen together.

Replacement Cost & What’s Included

Our pricing includes the cap, stainless steel fasteners rated for masonry, removal and responsible disposal of the failed unit, and a Level-1 inspection of the flue mouth while we’re up there. We photograph what we find and explain it before any additional work. The 90-Day Done Right Promise covers the installation in writing, no arguing. Most jobs in Boston proper, from West Roxbury to East Boston, finish in under two hours.

DIY or Call Us?

An owner can safely check whether the cap is present and roughly level from the ground with binoculars. You can also verify the model stamp if you’re comfortable on a ladder and the roof pitch is walkable. What you cannot safely do is remove a cap that may be the only thing keeping a deteriorated flue tile from shifting, or properly seat a new cap on a crown that needs resurfacing first.

We’ve arrived to jobs in Somerville and Cambridge where a homeowner’s self-installed cap was upside down, mesh inward, doing nothing but collecting leaves. The brackets were wrong for the flue profile and the fasteners were zinc-coated, already bleeding rust. The work had to be redone completely. If the chimney’s doing its job, you won’t notice it. You hire us so it stays that way.

Call (857) 597-5950 and we’ll measure it correctly the first time.

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