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 Ashburn Owner’s Guide
A new Olympia Chimney chimney cap installed in Ashburn typically runs $340 to $720, including the part, fasteners, and labor. We stock Olympia Chimney-compatible caps and components on the truck, so most installations are done in a single visit. The camera doesn’t guess. Neither do we. You’ll get a written price before we start and photos of the finished work before we leave.
Most homeowners in Ashburn discover their cap has failed the same way: they spot rust streaks on the chimney crown, hear a metallic rattle during a windstorm, or find small pieces of metal in the gutter after a hard rain. Sometimes a nor’easter takes the cap clean off and leaves it in the yard. Either way, the fix is straightforward when the part is matched correctly, and surprisingly expensive when it’s not.
Key Takeaways:
- Typical installed Olympia Chimney cap replacement in Ashburn: $340 to $720
- We stock Olympia Chimney caps and mounting hardware on the truck
- Written price, scope, and warranty before any work begins
- Every installation includes camera verification and a photo record
- 365-Day Done Right Promise applies to every cap we install
Which Olympia Chimney Models This Applies To
Olympia Chimney keeps their parts catalog broad, and the cap line is no exception. We work with the standard round and square slip-in caps across their stainless steel series, as well as the larger top-mounted designs for masonry flues. The most common compatibility issues we see in Ashburn come down to one number: the flue’s outside diameter. Olympia caps are sized by OD, not by the mason’s or builder’s nominal measurement. If you order a cap for a “13-inch flue” based on what the home inspector wrote, you may end up with a cap that’s a half-inch too loose or too tight. We measure the actual flue tile OD on every install, because that’s what determines whether the cap seats correctly and stays put through a Virginia winter.
For replacement caps on existing Olympia systems, the decision between OEM and quality aftermarket comes down to mounting style, not brand loyalty. Olympia’s OEM caps are well-built and match their system specs exactly. But aftermarket options from Famco and Copperfield are just as durable, often less expensive, and readily available in the sizes Ashburn homes actually use. We’ll quote both when the situation calls for it and explain the difference in plain terms before you spend a dollar.
Signs Your Olympia Chimney Chimney Cap Installation Is Failing

- Rust streaks running down the chimney crown. This is the classic sign that the cap’s galvanized base or mesh is breaking down. Once water wicks under the cap and sits against the flue tile, the corrosion compounds quickly, especially with Ashburn’s freeze-thaw cycles from January through March.
- Mesh screen missing or detached. A loose screen is an open invitation to squirrels, starlings, and racoons. If you’ve heard scratching or chirping from the flue, the screen has likely failed. The cap needs replacement before the animals build a nest that blocks the exhaust.
- Cap sits loose or wobbles in high wind. Olympia caps are meant to be mechanically fastened to the flue, not just pressed on. Wind-wobble means the attachment points have worn, or the cap was never properly screwed down. Loose caps can dent the flue liner or come off entirely in a storm.
- Water inside the firebox after rain. A capped flue should shed rain around the flue tile, not into it. If you’re getting drips inside the firebox, the cap crown or the seal around the flue has failed, and the cap is not doing its job.
- Missing cap entirely. This one visits its own diagnosis. Sometimes severe weather in Ashburn takes the whole assembly off and drops it in the yard. If the cap is gone, the flue is open to rain, leaves, birds, and embers, which is a fire risk and a moisture problem from day one.
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AfterReplacement Cost & What’s Included
For most Ashburn homes, we quote between $340 and $720 for a complete Olympia Chimney chimney cap installation, parts and labor included. The spread comes down to three things: the flue size (a 13×13 masonry flue costs more than an 8-inch round stainless flue), the mounting type (slip-in caps are less labor than top-mounted caps requiring adhesive or tap-con anchors), and the condition of the crown where the cap sits. If the crown is spalled or cracked, we’ll recommend repairing it before installing the new cap, and we’ll quote that as a separate line item in writing.
Every quote includes the cap, the mounting hardware, the labor to install it correctly, camera verification from below that the flue is clear and undamaged, and a photo record of the finished installation. That’s Clause 4 of the Haven Standard, and it’s been our default since 2009. You’ll have a written scope, a written price, and a written warranty before we start. No exceptions.
DIY or Call Us?

If you’re comfortable on a ladder and your chimney is a single-story height with easy roof access, you can safely inspect a cap from the ground with binoculars. Look for rust, missing mesh, or gaps at the flue. You can also check from the roof if you have a low-slope surface and a spotter. What we recommend against is removing a failed Olympia cap yourself. The caps are secured with screws that may be corroded, the flue edges can be sharper than you expect, and on a two-story Ashburn home, one wrong step on a wet shingle is a serious risk. If the cap is loose, partially detached, or the flue is tall, that’s a job for a technician with proper roof equipment.
We’re glad to handle the full replacement at (240) 220-9412. Written estimate first, always. And if you already have a quote from another Ashburn-area chimney company, bring it to us for a free second opinion.
FAQs
Plan on 8 to 15 years for a stainless Olympia cap in Ashburn’s climate. The mesh and fasteners usually fail before the cap itself does. Coastal-adjacent humidity and winter freeze-thaw cycles both work against the connections. If the cap is under 8 years old and showing rust or wobble, the install was likely done with the wrong fasteners or the wrong sizing. We’ll confirm exactly what’s failing with a camera and hand you a written fix. Call (240) 220-9412 for an inspection.
Usually not, and honestly, it’s rarely worth it. Once the mesh is gone or the base rusted through, patching means drilling into corroded metal. The patch almost always fails faster than the original cap did. We stock replacement caps in common Ashburn flue sizes, so a swap is typically same-visit once we measure the flue. Our techs will show you the camera evidence before recommending replacement.
Most Olympia Chimney cap replacements in Ashburn take 45 minutes to an hour on site. That includes roof setup, removal of the old cap, flue edge cleanup, new cap installation, and camera verification from below. If the crown needs repair work first, that adds time and is quoted separately in writing.
We stock Olympia Chimney-compatible caps in the flue sizes most common in Ashburn and the One Loudoun corridor. When a custom size is needed, we source through our materials network, including Olympia Chimney, Famco, Copperfield, DuraFlex, HeatShield, and Gelco. That network keeps our prices honest and our lead times short. Call (240) 220-9412 and we’ll confirm what’s on the truck for your flue size.
Level Two Chimney Ashburn is an independent chimney service provider. We are not affiliated with Olympia Chimney, but we install and stock their compatible parts because they hold up well in this market and our customers ask for them by name.
If your Olympia Chimney cap has failed or is failing, the fastest path to a fixed flue is one call. Corrine Halstead and our Ashburn crew will measure, quote, and install with camera evidence at every step. Call (240) 220-9412 for a written estimate. It’s free, it’s detailed, and it includes the photo record. The camera doesn’t guess. Neither do we.
Written by Corrine Halstead, Owner, Level Two Chimney Ashburn at Level Two Chimney Ashburn, serving Ashburn and nearby areas.





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