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 Rockville Owner’s Guide
An installed Olympia Chimney-compatible chimney cap in Rockville typically runs $320 to $540, including the cap, mounting hardware, and labor. We stock Olympia Chimney caps on our trucks and can usually complete the swap in under an hour once we’re on site. Most Rockville homeowners discover they need this work the way Corrine Halstead describes it: you’re in the yard, you glance up, and the cap that used to sit square on the flue is either leaning, rusted through, or gone entirely. Sometimes the first sign is inside the house, a faint musty odor after rain, or a squirrel that sounds far too close to the living room ceiling.
Which Olympia Chimney Models This Applies To
Olympia Chimney manufactures caps that fit their stainless steel chimney systems, most commonly the Olympia and the Ventis line. The catch: these caps are sized by inner flue diameter and by chimney pipe brand, and a cap from a different manufacturer will rarely seat correctly on an Olympia chase top. On Rockville rooftops, we most often install the Olympia cap on single- and double-wall stainless chimneys running 6-inch and 8-inch flues, though the smaller 5-inch and larger 10-inch variants show up on older wood stoves and some high-efficiency fireplaces.
If you still have the original cap, there’s usually a stamped model number on the underside or inside the collar. No stamp? Measure the outside diameter of the chimney pipe where the cap slips on, then confirm the inner flue diameter. Those two numbers tell us which Olympia cap fits. We stock Olympia Chimney caps as OEM direct-fit parts, and we’ll show you the label before it goes on. Level Two Chimney Rockville is an independent service provider, not an Olympia Chimney distributor or affiliate, but we source our Olympia parts through Haven’s buying network, the same channel we use for DuraFlex liners, HeatShield patch compounds, and Gelco crown coatings. That keeps the price honest and the part genuine.
There’s one compatibility gotcha worth knowing: older Olympia systems installed before 2005 sometimes use a friction-fit cap, not the modern screw-and-band clamp style. If your chimney has the older termination, an OEM Olympia cap made today may not drop straight on. We’ll catch that during the inspection and machine the existing collar or install an adapter before mounting the new cap. It’s a 20-minute fix, but it’s the kind of thing that turns a Saturday DIY job into a three-weekend saga.
Signs Your Olympia Chimney Chimney Cap Installation Is Failing

- Rust bleeding down the chimney pipe. Olympia stainless holds up well, but the cap’s weld points and wire mesh are usually mild steel on entry-level models. Once rust starts streaking, the cap has maybe two seasons left in Rockville’s wet winters and humid summers.
- Water in the firebox after rain. That means the cap’s rain hood is damaged or the storm collar seal has failed. Water running down the flue eats at the liner joints and accelerates spalling in brick chimneys.
- Animal noise from the flue. A missing or torn mesh screen is an open door for squirrels, raccoons, and birds. Corrine calls a bird nest in a flue “a fire hazard with wings,” and she’s not joking. Nest material against a hot flue is a chimney fire waiting.
- Debris at the bottom of the firebox. Flakes of rust, pieces of mesh, even small twigs. The cap is failing from above and dropping evidence into your living room.
- The cap is visibly leaning. Rockville gets real wind gusts off the open stretches near King Farm and Fallsgrove. A cap that’s shifted on its collar is one storm away from becoming a projectile or leaving the flue wide open.
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AfterReplacement Cost & What’s Included
In Rockville, expect to pay $320 to $540 for a complete Olympia chimney cap installation on a standard stainless chimney. The breakdown is straightforward: the OEM or direct-fit Olympia cap itself runs $140 to $260 depending on flue diameter and mesh grade, and labor runs $180 to $280. That labor includes removing the old cap, inspecting the flue opening and storm collar, installing the new cap with fresh sealant, and documenting the whole thing.
Price moves on a few Rockville-specific factors. Roof pitch matters, because a 12/12 roof means setting up safety lines and taking more time than a walkable 4/12. The chimney’s height above the roof deck matters too. If you need the older friction-fit to band-clamp adapter, that’s usually a $40 to $60 add-on, and we’ll write it into the quote before we start, never after.
Every Olympia cap installation includes a documented photo record of the flue, the old cap, and the finished installation, plus a written warranty on our workmanship. That’s Haven Standard Clause 4, the same camera-documented inspection practice Level Two Chimney Co. has run since 2009. You walk away knowing exactly what went on your chimney and what it looked like before and after.
DIY or Call Us?

There are some things a Rockville homeowner can check safely from the ground: is the cap rusted through, is the mesh intact, is it sitting square? If it’s just dirty or you’re confirming what you already suspect, a pair of binoculars does fine. What we don’t recommend is doing the cap swap yourself on anything taller than a single-story bungalow with a walkable roof. A chimney cap is not high-tension like a garage spring, but you are working at height, around a flue that may still have hot creosote deposits, with a part that needs to seat correctly under wind load. A cap that’s installed loose is not installed at all.
Where DIY really goes wrong for Olympia systems is the fit. If you order the wrong diameter or miss the friction-fit issue, you’ve spent $200 on an OEM part you can’t return once the box is open. Our crew handles Olympia caps on Rockville chimneys every week, and we’ll match your model by label and measurement before anything gets ordered or installed. Call (571) 376-7052 and we’ll put you on the schedule.
FAQs
An OEM stainless Olympia cap typically lasts 12 to 18 years in Rockville’s climate, though the mesh screen and weld points can fail sooner on entry-level models. Caps on chimneys that see heavy wood-burning use or direct western sun in neighborhoods like Derwood tend to fail on the earlier end.
Sometimes, but not often enough to count on it. A torn mesh panel can occasionally be rewired or patched, but once the weld points rust or the hood warps, replacement is the only repair that holds. We’ll show you the camera footage and tell you plainly if repair can safely wait.
Most Olympia cap installations in Rockville take 45 to 75 minutes on site, including removal, inspection, mounting, and the photo record. We’ll give you a written time frame before we start.
We stock Olympia-compatible caps in the most common Rockville sizes on our trucks, so most jobs are done in one visit. If your flue diameter is unusual or you need the older friction-fit adapter, we’ll order it and book you as soon as it arrives.
If you’re looking at a failed Olympia chimney cap in Rockville, call (571) 376-7052 for a free estimate. We’ll put the price in writing before any work starts, and we’ll show you the camera footage before we say a word about what it costs. The camera doesn’t guess. Neither do we.
Written by Corrine Halstead, Owner, Level Two Chimney Rockville, serving Rockville and nearby areas.





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