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 Downingtown Owner’s Guide
We stock and install Olympia Chimney-compatible chimney caps for most residential flue sizes in Downingtown, with typical installed prices running $285-$475 depending on cap style and whether your flue needs a collar adapter. Most Olympia Chimney cap replacements we book in Chester County are completed same visit because we carry the common 8″×13″, 13″×13″, and multi-flue sizes on every truck. Homeowners usually discover the cap has failed after finding rust flakes in the firebox, water stains on the ceiling near the chimney breast, or - in the older homes along the East Brandywine corridor - a cap that’s blown off entirely during one of Pennsylvania’s spring wind events.
Which Olympia Chimney Models This Applies To
Olympia Chimney caps are not model-locked to specific fireplace units; they are flue-size dependent. What matters is your flue’s outside dimensions and whether you have a single flue, extended flue, or multi-flue chase top setup. Olympia Chimney manufactures caps in galvanized, stainless 304, and stainless 316 grades, with the 316 line carrying a lifetime warranty against rust-through that we think is worth the upgrade in Downingtown’s freeze-thaw climate.
To identify what you need: measure the outside length and width of your flue tile or liner at the top, note whether the flue is flush with the crown or rises above it, and check for an existing wind band or hip lid style. Olympia Chimney’s part numbers are stamped on the underside of most caps manufactured after 2018 - look for an “OC-” prefix followed by dimensions. We also stock quality aftermarket equivalents from Gelco and Famco that match Olympia Chimney specs when the OEM lead time runs long, and we’ll show you both options with the price difference in writing before you decide. Level Two Chimney Downingtown is an independent service provider; we are not affiliated with Olympia Chimney.
Signs Your Olympia Chimney Chimney Cap Installation Is Failing

- Rust staining down the chimney face or on the roof below. Galvanized caps in Downingtown typically show surface rust within 7-10 years due to Pennsylvania’s acid rain and road salt aerosols. Once the rust reaches the mesh screen, the cap is shedding metal into your flue.
- Water in the firebox or damp odors after rain. A cracked or poorly seated Olympia Chimney cap lets water follow the flue liner directly to your smoke shelf. In homes with exterior chimneys on the north side, this accelerates during March and April when freeze-thaw opens hairline gaps.
- The screen mesh is clogged or missing entirely. The 5/8″ spark arrestor mesh on Olympia Chimney caps traps creosote particles and can become blocked. A missing screen means embers exit onto your roof - a genuine fire hazard we document with the camera before we quote replacement.
- The cap is tilted, loose, or has visible gap at the base. Wind lift and improper original installation are the usual causes. We’ve re-secured caps that were held on with nothing more than a few bent tabs; the correct Olympia Chimney install uses stainless screws into the flue tile or a clamp-band collar.
- Animals or nesting debris in the flue. A failed cap is an open invitation. We’ve pulled squirrel nests and starling colonies from Downingtown chimneys where the cap blew off in a storm and the homeowner didn’t notice until the smell traveled downstairs.
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AfterReplacement Cost & What’s Included
| Cap Type | Typical Installed Price | Warranty |
|---|---|---|
| Olympia Chimney galvanized, single flue | $285-$340 | 5-year |
| Olympia Chimney stainless 304, single flue | $340-$395 | Limited lifetime |
| Olympia Chimney stainless 316, single flue | $395-$475 | Lifetime |
| Multi-flue chase cover replacement (custom) | $650-$1,100 | Varies by material |
What drives the range: flue height above the crown (taller requires a deeper skirt), whether we need to remove a seized or broken existing cap, and if the flue tile itself is cracked and needs repair before the new cap seats properly. Every quote includes the cap, stainless fasteners or collar, removal and disposal of the old unit, and a camera inspection of the flue top to confirm no debris or damage is hidden underneath. We deliver the written price before work starts - Haven Standard Clause 1 - and back the installation with our 365-Day Done Right Promise.
DIY or Call Us?

What you can safely check from the ground: use binoculars to confirm the cap is present, level, and has all four sides of mesh intact. If you have a steep roof pitch, a two-story stack, or any hesitation about ladder work, stop there. Chimney cap replacement requires working at height with power tools near a roof edge, and a dropped cap or slipped foot carries real injury risk.
Where DIY goes wrong: improper measuring (outside vs. inside flue dimensions are commonly confused), using non-stainless fasteners that rust within two seasons, and failing to inspect the flue interior for damage that the failed cap allowed. We’ve been called to Downingtown jobs where a homeowner’s self-installed cap was the right size but upside down, creating a water funnel instead of a shield. The camera doesn’t guess. Neither do we. Call (484) 558-2798 and we’ll show you what we find before any work starts.
FAQs
Galvanized caps average 8-12 years in Chester County’s climate before rust-through; stainless 304 caps typically last 15-20 years; stainless 316 can outlast the chimney itself. The freeze-thaw cycling and road salt exposure along routes like 30 and 322 accelerate corrosion on lower-grade metals. Call (484) 558-2798 for an exact quote - estimates are free.
Minor mesh damage or a loose wind band can sometimes be addressed, but once rust appears on the hood or base, replacement is the honest recommendation. We don’t sell repairs that fail within a season. Our camera inspection shows you the condition so you can decide with the photo in front of you. Call (484) 558-2798 for an exact quote - estimates are free.
Most single-flue Olympia Chimney cap replacements take 45-90 minutes on site, including removal, flue-top inspection, and installation. Multi-flue chase covers or jobs requiring flue tile repair run longer, and we’ll give you the time estimate in writing with the price. Call (484) 558-2798 for an exact quote - estimates are free.
We carry the three most common single-flue sizes - 8″×13″, 13″×13″, and 13″×17″ - in stainless 304 on every Level Two Chimney Downingtown truck, with 316 and multi-flue options available next-day through our Haven buying network if your job requires them. Call (484) 558-2798 for an exact quote - estimates are free.
Ready to see what your flue top actually looks like? Call Level Two Chimney Downingtown at (484) 558-2798. We’ll send a background-checked, uniformed technician with a camera, deliver a written price before any work starts, and leave you with a documented photo record under Haven Standard Clause 4 - the same practice we’ve followed on every one of our 38,000+ jobs since 2009.
Written by Corrine Halstead, Owner, Level Two Chimney Downingtown at Level Two Chimney Downingtown, serving Downingtown and nearby areas.





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