Level 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
Olympia Chimney Chimney Cap Installation: The West Chester Owner’s Guide
We stock and install Olympia Chimney-compatible chimney caps across West Chester, with most completed same-day at $340-$620 installed depending on flue size and whether your crown needs repair before mounting. Our trucks carry the 8″, 9″, and 13″ round-base models plus the 17″ x 21″ rectangular units that match Olympia’s 304 stainless and galvanized lines. You’ll usually discover the cap has failed when water spots appear on the firebox ceiling after a hard rain, or when you spot rust streaming down the brick from a galvanized unit that’s eaten through at the mesh skirt.
Which Olympia Chimney Models This Applies To
Olympia Chimney caps fall into three product families, and getting the right base flange matters more than most owners expect. The CC-8, CC-9, and CC-13 round single-flue caps cover 8-inch through 13-inch flue tile diameters with a 4-inch mesh height. The CC-1317 and CC-1721 rectangular caps handle multi-flue or oversized flue openings. The CC-OD series is the outside-mount band that wraps the chimney crown itself, used when the flue tile sits flush or below the crown edge.
We check three things before quoting: the flue tile outer diameter (measure with a tape, not a guess), whether the crown has more than 1/4-inch of slope decay, and whether your existing cap is band-mounted or flue-tile mounted. Olympia’s galvanized caps run $40-$80 cheaper than their 304 stainless equivalents, but in West Chester’s freeze-thaw cycle with road salt in the air, we’ve seen galvanized units fail at the skirt weld in 6-8 years where stainless holds 15+. We source through Haven’s buying network alongside DuraFlex, HeatShield, and Gelco, so we quote both options with the lifespan difference written plain.
Level Two Chimney West Chester is an independent service provider, not affiliated with Olympia Chimney.
Signs Your Olympia Chimney Chimney Cap Installation Is Failing

- Rust stains on brick below the cap. Olympia’s galvanized caps use a welded skirt joint that collects condensation; once the zinc coating breaches at that weld, rust runs down the face in vertical streaks. The cap is still keeping rain out, but the structural failure is 18-24 months away.
- Mesh screen pulling away from the frame. The spot-welded mesh on older CC-series caps fatigues from thermal cycling. You’ll see daylight through gaps, or hear the mesh rattle in wind. Squirrels fit through a 3/4-inch gap; we’ve pulled nests from flues where the mesh failed first.
- Water in the firebox after rain, cap still present. The cap’s base flange may have corroded thin at the flue tile contact point, or the crown beneath it has sunk enough to break the seal. The cap looks fine from the ground; the leak is underneath where you can’t see without a ladder.
- Cap tilted or shifted after wind. Olympia’s flue-tile mount uses tension screws that bite into soft clay tile. One good gust loosens the grip, and the cap sits crooked. A tilted cap channels water into the flue instead of away from it.
- Visible holes or cracks in the lid. Stainless lids rarely fail, but galvanized lids in coastal-influenced air (we’re 40 miles from Delaware Bay here) can pit through. Once the lid is perforated, the cap is decorative, not functional.
Before
AfterReplacement Cost & What’s Included
| Service | Price Range |
|---|---|
| Olympia stainless cap, single flue, installed | $340-$480 |
| Olympia galvanized cap, single flue, installed | $280-$380 |
| Multi-flue or outside-mount band style | $420-$620 |
| Crown repair prep (if needed before band mount) | $180-$340 additional |
The range depends on three factors we measure on site: flue access (steep roof pitch adds ladder time), crown condition (a sound crown takes 20 minutes; a crumbler needs resurfacing before any cap will seal), and whether we’re matching an existing multi-flue layout or converting to a simpler single-flue cover. Every quote is written before work starts, Haven Standard Clause 1, with the cap model number, warranty term, and photo documentation scope listed. The 365-Day Done Right Promise covers installation defects; the cap itself carries Olympia’s material warranty against manufacturing failure.
DIY or Call Us?

You can safely check three things from the ground with binoculars: whether the cap sits level, whether mesh gaps are visible, and whether rust streaks run from it. Do not climb to measure. Chimney work above 15 feet on a pitched roof is where homeowners get injured, and a cap replacement requires two hands on a ladder while handling a 12-pound steel unit with sharp mesh edges.
Where DIY goes wrong: overtightening the tension screws and cracking the flue tile (a $800+ liner repair), installing a cap with too small a mesh height for your appliance (gas inserts need 5-inch minimum; wood needs 4-inch), or band-mounting to a crowned chimney without checking for hollow spots beneath. We run a camera down the flue before quoting, Haven Standard Clause 4, so you see what the cap was supposed to protect. The camera doesn’t negotiate - it just shows you what’s there. Call (610) 321-4570 when you’re ready for the written price.
FAQs
304 stainless models last 15-20 years in our climate; galvanized models average 6-10 years before skirt weld failure. Road salt aerosol from Route 202 and the freeze-thaw cycle between December and March accelerates galvanized corrosion. We note the install date in your photo record so you know when to budget the next one.
Mesh re-welding and lid patching cost nearly as much as replacement and carry no warranty. We replace rather than repair Olympia caps because the base flange, where the real seal happens, can’t be field-repaired to factory spec. Call (610) 321-4570 for an exact quote - estimates are free.
Most single-flue replacements take 45-75 minutes including ladder setup, old cap removal, flue tile inspection, and new cap tensioning. Multi-flue band mounts or crown-prep jobs run 2-3 hours. We schedule a morning or afternoon window and text when the tech is en route.
We carry the six most common Olympia sizes daily: CC-8 through CC-13 round, CC-1721 rectangular, and the CC-OD band series. Less common sizes (CC-15, CC-1017) we source within 48 hours through Haven’s buying network. We confirm stock when you call so you’re not waiting.
Written by Corrine Halstead, Owner, Level Two Chimney West Chester at Level Two Chimney West Chester, serving West Chester and nearby areas.




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