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.
Chimney Company in Onion Creek, TX
Chimney repair in Onion Creek usually means fixing the quiet damage this neighborhood is known for: water-stained fireboxes, rusted dampers, and silt-packed flues left behind by the 2013 and 2015 creek floods. Boardwalk Chimney Sweep has served Onion Creek since 2011, and we’ve learned that houses here need a different inspection checklist than homes a mile west on higher ground. Most fireplaces in 78747 are gas-log or prefab units built between the 1990s and 2010s, which changes how we approach everything from crown repair to liner work. Call (877) 274-1247 when you need a straight diagnosis, not a sales pitch.
Why Onion Creek Homes Are Different
The fireplaces in Onion Creek, Onion Creek Forest, and the surrounding 78747 subdivisions exist mostly for ambiance, not heat. That means gas-log sets and factory-built metal fireboxes dominate, and the annual maintenance call here is more about gas log inspection and prefab flue checks than the creosote-heavy sweeps you’d expect in an older Austin neighborhood with masonry fireplaces. The homes were largely built from the 1990s through the 2010s, so many original fireplace components are now two or three decades old, which is exactly when metal firebox panels start to rust through and prefab flue joints begin separating.
Then there’s the creek itself. The Halloween 2013 and 2015 Onion Creek floods put dozens of homes under water. Rebuilt houses look fine from the street, but inside the chimney chase, we routinely find silt in the flue, water-damaged firebox floors, and rusted damper assemblies. Central Texas humidity does the rest: fireplaces in this area sit idle for eight or nine months a year, letting moisture and debris settle exactly where you don’t want them. A house on Onion Creek that has never had its chimney inspected after a flood event needs one before the next burn season.
Styles & brands we work with
Our Main Onion Creek Services
Most Onion Creek homeowners call Boardwalk Chimney Sweep for one of two jobs, and often both can be handled in the same visit.
Chimney Sweep in Onion Creek
A chimney sweep in Onion Creek typically involves inspecting and cleaning a prefab metal flue and gas-log set rather than removing heavy wood creosote. In 78747, we focus on clearing debris, checking gas log burner condition, confirming the flue is clear after years of idle use, and documenting any rust or water staining from past creek events. For homes with direct-vent gas units, the work is lighter but still worth an annual visual check. Get the full breakdown on our Chimney Sweep in Onion Creek page.
Dryer Vent Cleaning in Onion Creek
Dryer vent cleaning in Onion Creek addresses one of the leading household fire risks, and many homeowners here have never had their dryer vent opened since the house was built. Lint builds up in the exhaust line over two decades, and a gas dryer with a clogged vent runs hotter and vents carbon monoxide less effectively. One call, two fire hazards addressed. See Dryer Vent Cleaning in Onion Creek for what’s involved and what it costs.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Chimney Repair in Onion Creek
Chimney repair in Onion Creek is rarely about masonry cracks. In these 1990s – 2010s subdivisions, it’s usually about the factory-built metal chimney system: a rusted damper from humidity and flood water, a firebox panel that’s corroded through after two decades of gas-log use, or a prefab flue that shifted during a rebuild. Because many homes in 78747 sat flooded in 2013 or 2015, we check for silt and water damage inside the chase before we ever talk about repairs. The scope of work varies, but the start point is always the same: camera evidence you can see for yourself. This is our Chimney Repair approach, and it’s why homeowners don’t get told they need work they can’t verify.
Chimney Cap Installation
Signs you need it
If your cap is missing, rusted through, or was knocked loose during a storm or flood event, water and debris enter the flue directly.
What it costs in Onion Creek
Chimney cap installation in Onion Creek typically runs $180 – $340, depending on the cap type and whether the flue tile needs a mounting adapter.
How we do it
We measure the flue opening, select a compatible cap, secure it to the flue or crown with a storm-rated installation, and verify the fit with photos.
Chimney Flashing Repair
Signs you need it
Water staining on the ceiling near the fireplace, rust drips on the firebox floor, or visible gaps in the metal where the chimney meets the roof line.
What it costs in Onion Creek
Flashing repair in Onion Creek is typically $230 – $390, depending on whether we’re resealing a section or replacing rusted flashing around the full chimney penetration.
How we do it
We remove the old sealant, inspect the base flashing for corrosion, replace or reseal the step and counter flashing, and test with a water check before we leave.
Chimney Crown Repair
Signs you need it
Cracks in the concrete crown that catch leaves and water, or a crown that’s spalling and shedding grit onto the roof.
What it costs in Onion Creek
Crown repair in Onion Creek typically costs $190 – $360, for crack filling and resurfacing rather than a full recast.
How we do it
We clean the crown surface, fill visible cracks with a flexible sealant rated for temperature swings, and resurface the top so water sheets off instead of pooling.
What Chimney Repair Costs in Onion Creek
| Item | Typical range in Onion Creek |
|---|---|
| Chimney cap installation | $180 – $340 |
| Chimney flashing repair | $230 – $390 |
| Chimney crown repair | $190 – $360 |
Is a rusted firebox a structural problem or just cosmetic?
On gas-log prefab units, a rusted firebox floor is usually cosmetic if the metal below remains intact, but if rust has eaten through the panel, it can let heat reach the framing. We confirm with a camera and tell you plainly if the repair can wait.
Can you repair a chimney that flooded in Onion Creek?
In most cases, yes. The work usually involves removing silt, replacing rusted dampers or caps, and resurfacing or relining the flue if water sat long enough to damage the liner. We scope the chase with a camera first so you know exactly what’s needed. Call (877) 274-1247 to book an inspection.
Brands We Service in Onion Creek
Boardwalk Chimney Sweep works with the same trade brands chimney professionals specify nationwide, including DuraFlex, HeatShield, and Olympia Chimney. We use manufacturer-recognized parts for Onion Creek repairs so liner work and cap installations hold up to Central Texas humidity and future weather events. Take a look at our brands for the full list and why material pedigree matters in 78747.
See the difference
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AfterPricing for Chimney Company in Onion Creek, TX
| Service | Typical range in Onion Creek |
|---|---|
| Chimney sweep (gas-log or prefab) | $100 – $190 |
| Dryer vent cleaning | $90 – $150 |
| Chimney cap installation | $180 – $340 |
| Chimney flashing repair | $230 – $390 |
| Chimney crown repair | $190 – $360 |
| Chimney liner inspection (camera) | $90 – $200 |
| Gas log set inspection and cleaning | $80 – $150 |
| Chimney chase cover replacement | $210 – $420 |
Prices in Onion Creek run higher when a flood-damaged chase needs silt removal before repair work can start, or when rusted components require removal and replacement rather than simple servicing. Every job gets an upfront, flat-price quote before we begin, so there’s no surprise line item at the end.
Neighborhoods We Serve in Onion Creek
We work throughout 78747, from the original Onion Creek subdivisions up through the newer streets along the south side of the neighborhood. Response time for most areas is next business day for inspections, with sweep and repair appointments booked during the same week whenever possible.
- Onion Creek
- Onion Creek Forest
- Preston Oaks
- Colorado Crossing
- Goodnight Ranch
Service Area – Cities Near Onion Creek
Boardwalk Chimney Sweep also serves homes in Garfield, TX, Shady Hollow, TX, Hornsby Bend, TX, and Rollingwood, TX. If you’re a few miles from Onion Creek and unsure whether we cover your street, call (877) 274-1247 and we’ll confirm.
Serving Onion Creek, TX — Our Local Coverage Area
We’re based in the Onion Creek area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs About Chimney Company in Onion Creek
We schedule most Onion Creek inspections within one to two business days. Flood-damage scopes and pre-season sweeps get priority booking in fall, so call (877) 274-1247 early if you want a slot before the cold snaps hit.
Most Onion Creek HOAs don’t require approval for interior chimney repairs or sweeps, though exterior cap changes may need a quick check-in if your subdivision has design guidelines. We can tell you what’s typically needed for your street when we quote the job.
We service all of it. In Onion Creek, most of our calls are gas-log and factory-built metal fireplaces, which need different tools and inspection points than a traditional masonry chimney. Our sweeps and repair techs are equipped for both.
What happens when you call
- 1A real person answersNo phone trees — talk to a local chimney cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Onion Creek Customers Say
"Decent work at a reasonable price. Communication in the days before the appointment was a bit thin, but the technician himself was great once he arrived."
— Jessica Lin"Drop cloths everywhere, HEPA vac, and not a speck of soot on the carpet. I'd been dreading the mess for nothing."
— Nicole Hayes"Thorough sweep and a clear report. He was running late from the job before and arrived near the end of the window, though he did call to warn me."
— Ruben Herrera