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 often starts with a simple cleaning call that reveals something more. The 78747 housing stock – largely brick-veneer and stone homes built between the mid-1990s and 2015 – combined with Central Texas humidity and the 2013 and 2015 flood events means fireplaces here hide water damage, rusted dampers, and cracked crowns more often than homeowners expect. Ashton Chimney has served Onion Creek since 2014, and we approach every job the same way: inspect first, show you what we found, and repair only what actually needs it. Call (855) 507-9184 when your fireplace isn’t performing the way it should.
Why Onion Creek Homes Are Different
Onion Creek is a master-planned golf-course suburb of South Austin, and the housing stock tells a specific story. Most chimneys we work on sit atop brick-veneer or stone single-family homes on slab foundations, built from the 1990s through the 2010s. These homes commonly have factory-built or masonry gas and wood-burning fireplaces – and nearly all of them sit idle from April through October. That long dormant stretch in Central Texas heat and humidity invites creosote to harden into a glaze-like coating, animals to nest in uncapped flues, and moisture to work its way into mortar joints. Then the first hard freeze of the season hits, and dozens of Onion Creek homeowners fire up their fireplaces in the same week. That’s when hidden problems surface.
The bigger wrinkle here is flood history. The 2013 and 2015 Onion Creek floods inundated thousands of homes to several feet, and many were rebuilt or repaired in the years after. On a chimney, that kind of water exposure leaves a trail: silt lines inside fireboxes, rusted dampers, spalled brick, and mortar that never fully dried out. Rebuilt homes often have fireplaces that were never re-inspected after the flood work. A cleaning visit in Onion Creek frequently turns into a moisture and structural assessment before a sweep can safely happen, because soot on top of water-damaged masonry is a cosmetic fix over a structural problem.
Styles & brands we work with
Our Main Onion Creek Services
Two services account for most of what Onion Creek homeowners call us about. Here’s what each involves in this area.
Chimney Sweep in Onion Creek
An Onion Creek chimney sweep means more than running a brush up a flue. We remove creosote buildup – which hardens badly after months of Texas humidity – clear out any nesting material, and inspect the full system from firebox to crown. Given the flood history in parts of 78747, we also check for water staining, rusted dampers, and mortar deterioration that a standard sweep might miss. If you’re in a rebuilt or long-vacant home, this is the right place to start. Full details are on our Chimney Sweep in Onion Creek page.
Dryer Vent Cleaning in Onion Creek
Your dryer vent is a venting system too, and in Onion Creek it runs through walls or ceilings that sat through two major flood events. Lint accumulates at bends and terminations, and that’s the leading cause of dryer fires. We clean the full run, verify airflow at the exterior termination, and flag any moisture damage or improper venting we find along the way. For a home that flooded in 2013 or 2015, that inspection matters more than most people realize. See our Dryer Vent Cleaning in Onion Creek page for the full scope.
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, TX frequently traces back to two local realities: years of humidity-driven moisture intrusion, and water damage from the 2013 and 2015 floods. Cracked crowns, rusted dampers, and deteriorated flashing are common in this housing stock – and a fireplace that was never properly re-inspected after flood repairs can hide structural problems for years. We don’t push repairs you can’t verify. Every recommendation comes with camera inspection footage and a plain-language explanation of what we found and what it means. For the full scope of our repair work, see our Chimney Repair hub page.
Chimney Cap Installation
Signs you need it
Rainwater pooling in the firebox, animal sounds from the flue, or a rusted damper are all signs your Onion Creek chimney is taking on water and wildlife through an open or damaged cap area.
What it costs in Onion Creek
Chimney cap installation around Onion Creek typically runs $350 – $650 depending on flue size and roof access, while cap replacement with a damaged chase cover usually lands between $500 and $900.
How we do it
We measure the flue opening, select a stainless or copper cap sized for the application, and secure it to the flue tile or chase so animals and rain stay out while draft remains unrestricted.
Chimney Crown Repair
Signs you need it
Cracks spider-webbing across the crown, spalled brick near the top of the chimney, or water staining on the ceiling near the fireplace all point to crown failure.
What it costs in Onion Creek
Chimney crown repair in Onion Creek typically ranges from $350 for minor crack sealing to $1,500 for full crown replacement when the existing concrete has failed structurally.
How we do it
We clean the crown surface, fill or re-form the concrete depending on damage extent, and apply a waterproof sealant to keep the next rain storm from repeating the cycle.
Chimney Flashing Repair
Signs you need it
Water stains on the ceiling around the chimney chase, peeling paint near the roofline, or visible gaps in the metal where the chimney meets the roof indicate flashing failure.
What it costs in Onion Creek
Chimney flashing repair here typically costs $350 – $750 depending on roof pitch and whether the old flashing can be patched or needs full replacement.
How we do it
We inspect the existing flashing, identify the entry point, and repair or replace the metal using layered step and counter-flashing that sheds water the way the roofline demands.
Chimney Liner Installation
Signs you need it
Crumbling flue tile, visible gaps in the liner during camera inspection, or a failed draft test are the telltale signs a chimney liner is no longer doing its job.
What it costs in Onion Creek
Chimney liner installation in Onion Creek typically runs $2,200 – $3,700 depending on length and material, though HeatShield resurfacing may be an option at a lower cost for flues with less severe damage.
How we do it
We run a camera through the flue to document the damage, then measure and install a DuraFlex stainless liner or apply HeatShield resurfacing depending on what the inspection shows.
What Chimney Repair Costs in Onion Creek
| Item | Typical range in Onion Creek |
|---|---|
| Chimney cap installation | $350 – $650 |
| Chimney crown repair | $350 – $1,500 |
| Chimney liner installation | $2,200 – $3,700 |
Do I really need a new liner, or can it be repaired?
It depends on what the camera inspection shows. HeatShield resurfacing can often restore a flue with minor cracking or gaps at a lower cost than full replacement. A fully deteriorated liner usually needs a DuraFlex stainless system.
How long does chimney repair take in Onion Creek?
Most crown repairs and cap installations are done in a single visit. Liner installation and flashing replacement typically take a half day or full day depending on roof access and weather windows. We’ll give you a firm timeline before starting.
Brands We Service in Onion Creek
We work with professional-grade materials on every Onion Creek job – DuraFlex for stainless liners, Famco and Copperfield for caps and chase covers. We don’t stock hardware-store substitutes, because the chimney systems in this housing stock deserve parts that last. If a cap or chase cover is in stock locally, turnaround is faster. See our brands for the full list.
See the difference
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After
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AfterPricing for Chimney Company in Onion Creek, TX
| Service | Typical range in Onion Creek |
|---|---|
| Chimney sweep | $179 – $229 |
| Level 1 inspection | $129 – $179 |
| Level 2 camera inspection | $250 – $350 |
| Chimney cap installation | $350 – $650 |
| Chimney cap replacement | $500 – $900 |
| Chimney crown repair | $350 – $1,500 |
| Chimney flashing repair | $350 – $750 |
| Chimney liner installation | $2,200 – $3,700 |
| Dryer vent cleaning | $129 – $189 |
Two things push prices up in Onion Creek more than anywhere else: roof pitch and flood history. Steep rooflines make cap and crown work slower, and homes that took on water in 2013 or 2015 often need more extensive masonry prep before repairs can be done right. Whatever the job, you’ll get a flat price before we start, and the price we quote is the price you pay.
Neighborhoods We Serve in Onion Creek
We cover all of 78747 and the communities within Onion Creek proper. Most appointments can be scheduled within a few days during the week, though fall gets booked fast as the first cold snap arrives. The neighborhoods below are where we work most often:
- Onion Creek Plantation
- Onion Creek West
- Olympic Heights
- Springfield Estates
- Woodcreek
Service Area – Cities Near Onion Creek
Onion Creek sits at the southern edge of Austin, and our service area extends into the neighboring communities where the same climate and housing patterns hold. We regularly work in Manchaca, TX, Buda, TX, Garfield, TX, and Shady Hollow, TX. If you’re just outside Onion Creek, give us a call and we’ll confirm coverage.
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
Most Onion Creek appointments are scheduled within a few business days. During October and November – the first cold snap rush – we book further out, so if you want a cleaning before fireplace season, call early. Emergency repair calls are handled on a case basis.
Most chimney repairs and cleanings don’t require Onion Creek HOA approval since they’re maintenance on an existing feature rather than exterior changes. Caps and crown work are visible from the street, so some HOAs may want to know, but we’ve rarely seen it slow a job down.
Yes, and more often than you’d think. Flood-repaired homes in Onion Creek frequently have water-damaged mortar, rusted dampers, and fireboxes that were never re-inspected after the rebuild. We start with a Level 2 camera inspection so we can show you exactly what condition the flue and firebox are in before recommending any work.
If your fireplace, chimney, or dryer vent needs attention in Onion Creek, call Ashton Chimney at (855) 507-9184 for a free estimate. We’ll inspect, explain what we found in plain language, and give you a flat price before any work begins.
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
"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."
— Cole Doyle"Crown was cracked and taking water. Repaired it rather than quoting a rebuild, which the previous company had pushed hard for."
— Tyrone Ingram"Level two inspection before we bought the house. The report was detailed enough to use as a negotiating point and he explained every photo in it."
— Nia Mosley