Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 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 Alpharetta Owner’s Guide
We stock and install Olympia Chimney-compatible chimney caps in Alpharetta, and a typical replacement runs $340 to $680 installed, depending on the cap size, flue type, and whether the old cap has rusted itself to the flue tile. Most homeowners discover the cap has failed after a rainstorm, when water streaks appear on the ceiling near the chimney or dripping starts in the firebox. Sometimes it’s more obvious: they look up from the driveway and see the cap listing sideways like a loose tooth.
If you’re reading this, chances are you either spotted the damage yourself or a home inspector flagged it during a sale. Either way, the fix is straightforward, the parts are known, and the price should never be a surprise. Hank Delano has been running chimney crews long enough to know that a failed cap is rarely about the cap itself; it’s about what the cap was supposed to be doing while nobody was looking. “Tell me what’s in the flue, and I’ll tell you what it takes to fix it.”
Here’s what you need to know before you spend a dollar.
Key Takeaways
- Olympia Chimney caps fit standard round, oval, and rectangular flue tiles; the key measurement is the flue’s outside width or diameter, not the cap’s.
- Installed replacement in Alpharetta typically runs $340 to $680, written price before any work starts.
- We keep common Olympia Chimney-compatible cap sizes on the truck, so most Alpharetta jobs are one visit.
- Every cap installation carries our 365-Day Done Right Promise, in writing.
Which Olympia Chimney Models This Applies To
Olympia Chimney builds caps for three flue configurations: round flue liners, square or rectangular clay tile, and multi-flue masonry crowns. If you still have the product box or the install sheet, look for a model prefix like VC (round vacuum-lock), LC (leg kit for terra cotta), or CC (multi-flue). No box? Measure the flue’s outside dimension. A 13″ x 13″ clay tile takes a cap with a leg span that covers 13 to 17 inches of real estate, because the legs need to grip the tile walls or the crown, not float over the opening.
Alpharetta homes built before 1990 often have clay tile flues that have spalled (chipped away at the top edges from years of rain and heat). Those need a leg-mount cap with tension screws, not a slip-in. Newer homes near Avalon or Windward with stainless liners usually take a vacuum-lock round cap sized to the liner’s OD. Getting this right means the cap actually stays put when a March wind comes through; getting it wrong means you’ll call us back in six months because it’s rattling.
One compatibility gotcha we see regularly: the mortar crown on older Alpharetta chimneys is rarely perfectly square, so a cap that should fit on paper won’t seat evenly without minor crown repair. We check the crown before quoting, which is why every quote is written after an inspection, not before.
As for OEM versus aftermarket: Olympia’s own caps are well made and sized consistently. But quality aftermarket equivalents from brands we trust, like Copperfield, often match Olympic specs at a lower price. We’ll quote you the OEM part if you want it, and the equivalent if you don’t. The decision is yours; the fit is our responsibility either way.
Styles & brands we work with





Signs Your Olympia Chimney Chimney Cap Installation Is Failing
- Water in the firebox after rain. The cap’s hood or mesh has rusted through, or the seal around the flue has opened up. Water follows the flue walls straight down into the firebox. This is usually the first sign and the one that should prompt a call fastest.
- Leaks or stains on the ceiling near the chimney chase. Water has been entering long enough to saturate the chase or the masonry. By the time Sheetrock shows stains, the cap has been failing for at least a season.
- The cap is visibly tilted or shifted. Leg mounts loosen as clay tiles spall or the crown cracks. A tilted cap no longer covers the flue opening completely, which lets rain in and sparks out.
- Rust staining running down the flue or crown. Galvanized caps fail eventually; stainless holds longer but can still rust at the welds. If you see orange streaks, the metal is going, not gone yet, but close.
- Birds or squirrels in the chimney. The mesh screen has torn or pulled away from the frame. Animals get in, nest, and then the whole system works worse: air flow drops, odors start, and the cleanup usually costs more than the cap replacement.
Each of these points to the same underlying reality: a cap that isn’t doing its one job, which is keeping weather and animals out while letting flue gases out on time. The fix is usually fast once we see it.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
In Alpharetta, you should expect to pay between $340 and $680 for an installed Olympia Chimney-compatible cap. The range is honest. A simple round vacuum-lock cap on a clean stainless liner sits at the low end. A larger multi-flue cap, or a job where we have to seal a cracked crown before the cap can sit right, lands at the top.
The written price you get before work starts includes the cap, the mounting hardware, sealing the flue or crown as needed, cleanup of any debris left from the old cap removal, and a photo report of the finished work. The invoice you approve is the invoice you pay. There’s no parts upcharge hidden in the labor line.
Every cap we install carries our 365-Day Done Right Promise. If the cap fails or the install doesn’t hold within a full year, we come back and make it right at no charge. No phone tag, no argument, no re-quote. That guarantee is written on every repair agreement.
We also stock parts for other chimney systems where the cap was made by DuraFlex, HeatShield, or Gelco. If your system is a mix of brands, we can usually match it on the first visit.
DIY or Call Us?
There’s an honest split here. You can absolutely inspect your own cap from the ground with binoculars, look for rust, tilted legs, or missing mesh, and send us photos before booking. Many Alpharetta homeowners do exactly that, and it helps us come loaded for the right part.
What you shouldn’t do is walk a pitched roof with a socket set in your pocket. Steep roof pitches are common in Alpharetta’s newer subdivisions and in older ranches with 8/12 slopes. A cap that rusted enough to fail is often frozen to the flue tile, and free-up force plus bad footing equals a fall. We use fall-protection gear and two-person crews on every roof replacement for this reason. The other piece: sealing matters as much as the cap itself. Miss the crown seal and you’ll have the same water leak in six months.
If you want a second opinion on whether yours can wait or should be swapped now, call (762) 600-1468. Estimates are free, and we’ll tell you plainly if the job can wait.
FAQs
In Alpharetta, you’ll get 8 to 14 years out of a stainless cap, and 5 to 8 from a galvanized one. Georgia’s summer humidity plus those March wind gusts and occasional hail are harder on caps than the cold is. A cap with a galvanized base rusting at the legs may fail in half the time of its stainless counterpart.
You can sometimes re-seat a cap that’s tilted, and you can replace a torn mesh panel if the frame is still solid. But a rusted frame or broken welds usually mean replacement, because patching a corroded cap usually buys you one more year, not five. We’ll tell you which path is worth your money before we touch it.
Most single-flue cap replacements take 45 to 90 minutes once the inspection and quote are done. If the crown needs sealing first, add another 30 to 45 minutes for the sealant to set before the cap goes on. Either way, it’s usually a one-visit job.
We carry common Olympia-compatible sizes for round liners and standard clay tile flues on our trucks. Unusual multi-flue or oversized caps we order and install the same week. Call (762) 600-1468 with your flue measurement or a photo, and we’ll tell you what we have on hand.
Written by Hank Delano, Owner, Flint Chimney Co Alpharetta at Flint Chimney Co Alpharetta, serving Alpharetta and nearby areas.