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.
DuraFlex Chimney Cleaning in Round Rock, TX | Ashton Chimney
DuraFlex chimney cleaning in Round Rock means servicing factory-built venting systems, not old brick flues. We handle direct-vent and double-wall DuraFlex pipe, termination caps, firebox gaskets, and liners across 78665, 78680, 78681, and 78682. The thing that sets our work here apart: we know Round Rock fireplaces fail at the exterior chase cap first, and we inspect accordingly. Call (855) 507-9184 for a free estimate.

Ashton Chimney is an independent DuraFlex service provider, not a manufacturer-authorized dealer. That matters. We diagnose and repair DuraFlex systems on their merits, with no incentive to push replacement parts you don’t need. Our techs work on DuraFlex factory-built fireplaces and venting year-round across the Round Rock service area, so we know how these systems actually age in Central Texas heat and hard-freeze cycles.
Why Round Rock Residents Choose Us for DuraFlex Service
Most Round Rock homes built since the 1990s have factory-built metal fireplaces, not masonry chimneys. Teravista, Forest Creek, Behrens Ranch, Walsh Ranch, and Windemere. These are DuraFlex-style direct-vent and double-wall systems chased through framed exterior walls. That’s a different animal than the limestone and river-rock chimneys you’ll find near downtown Round Rock around 78664.
We work on both, but the factory-built side is where our DuraFlex experience shows. Nolan Pruett, owner at Ashton Chimney, grew up in Cedar Park and trained through the Building Trades program at ACC’s Round Rock Campus. He’s been sweeping chimneys in this area for about fifteen years. His line on diagnostics: “Tell me what your fireplace is doing and I’ll tell you exactly what’s going on in that flue.” We’ve found that’s usually right.
When you call us for DuraFlex service in Round Rock, you get a tech who can name the pipe diameter, identify the termination cap type, and tell you whether that gasket is salvageable before quoting a replacement. That’s the difference between a sweep company and a venting specialist. We’re the second one.
Styles & brands we work with





Common DuraFlex Chimney Cleaning Problems We Solve in Round Rock
- Packed rain caps and terminations. Live-oak leaves and spring cedar pollen pack the DuraFlex termination cap on exterior-chased vent pipe. By the time burn season hits, draft is choked before the fire even lights. We clear the cap, check the screen mesh, and verify the pipe is clear end to end.
- Cracked or missing termination caps. Summer storms and wind-driven rain get past a cracked DuraFlex cap and run down into the framed chase. That rusts pipe joints and stains the firebox surround. We see this in Walsh Ranch and Behrens Ranch regularly after heavy spring weather.
- Failed firebox-to-vent gaskets. Long humid summers idle the fireplace, and the gasket between firebox and vent pipe degrades. First cold snap, you get smoky smell and draft reversal. We re-gasket with listed equivalents matched to the appliance, not whatever the hardware store has on the shelf.
- Freeze-thaw cap collar cracks. Round Rock sits along the Balcones escarpment. Freeze-thaw snaps crack DuraFlex cap collars and the mortar at the chase crown. Water gets in, and over time the pipe joints rust from the top down. We inspect the crown every time we’re on the roof.
- Debris and creosote in short burn seasons. Central Texas fireplaces sit dormant most of the year, then get hammered during a Uri-style freeze. Creosote builds in direct-vent pipe faster than people expect because the burns are short and hot. We sweep it before it becomes a chimney fire risk.
DuraFlex Service in Round Rock: What Local Conditions Mean for Your Equipment
Here’s the insight most generic chimney pages miss. Because so many Round Rock fireplaces are factory-built units with vent chased up an exterior wall, the failure we find most isn’t inside the flue at all. It’s at the rain cap and chase crown on the outside of the house. In Teravista we pulled a DuraFlex direct-vent termination cap off a brick-veneer home whose chase was packed with live-oak leaves and cedar pollen, and the cap collar had cracked from a freeze-thaw snap, letting water track down to the firebox surround — a pattern we’ve also seen providing DuraFlex in Hutto. We cleared the chase, replaced the cracked cap with a correct-diameter DuraFlex-compatible termination, and re-gasketed the firebox-to-vent joint. The homeowner’s first fall burn drew clean with no smoke smell.
That’s the Round Rock pattern. Older masonry-chimney towns worry about creosote in the flue. Here, the first thing we check is what’s happening at the top of the chase. Water beats fire when it comes to damaging factory-built venting, and water in Round Rock comes from cap failures. If you own a DuraFlex-vented fireplace in a master-planned subdivision, that exterior chase is the most vulnerable part of your system. We inspect it on every visit, not just when something smells wrong.
DuraFlex Models & Products We Service in Round Rock
We service the full range of DuraFlex venting found in Round Rock homes. That includes DuraFlex 304 stainless direct-vent flexible relining kits, RelinePro flexible stainless chimney liner systems, ProFlex double-wall flexible liner for wood inserts, and factory-built fireplace venting with termination caps. If it says DuraFlex on the tag or the cap, we work on it.
Parts matter on these systems. We use DuraFlex OEM and listed equivalent venting components matched to the existing pipe diameter and appliance. Mixing brands on a factory-built flue is a code and safety problem, so we don’t do it. We keep common DuraFlex termination caps, gaskets, and connectors stocked for fast Round Rock turnaround. When a liner or firebox is sound, we repair and re-gasket. We recommend replacement only when the vent pipe or firebox is perforated or unlisted. That’s the honest line, and we hold it.
For more on our brand work, see our DuraFlex sales & service page.
See the difference
Before
After
Before
After
Before
AfterDuraFlex Service Pricing in Round Rock
DuraFlex chimney cleaning in Round Rock typically runs $180 to $340 for a standard factory-built fireplace sweep and inspection. Level 2 inspections, which we recommend when you’ve had water intrusion or a cap failure, run higher because they involve camera work through the full vent run. Cap replacement adds $95 to $250 depending on diameter and whether the chase crown needs repair. Firebox gasket replacement runs $125 to $225 on most factory-built units.
What drives cost here: access. Second-story chases, steep rooflines common in Teravista and Walsh Ranch, and the condition of the existing cap and crown. Every estimate is free. We quote a flat price before any work begins, and we include camera inspection and a photo report with every Level 2. Call (855) 507-9184 for an exact quote on your system.
Serving Round Rock, TX — Our Local Coverage Area
We’re based in the Round Rock area and know this community well, with experience extending to DuraFlex in Brushy Creek. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – DuraFlex Chimney Cleaning in Round Rock
Yes. Factory-built fireplaces produce creosote just like masonry chimneys, and direct-vent pipe is narrower, so creosote builds up faster with less tolerance. Annual cleaning also gives us a chance to check the cap, chase, and gaskets before a freeze hits. In Round Rock’s short burn seasons, that timing matters. Call (855) 507-9184 to schedule before the first cold snap.
Two causes dominate in Round Rock. Packed caps from live-oak leaves and cedar pollen restrict draft. Degraded firebox-to-vent gaskets after humid idle summers allow smoke to reverse into the room. Both are fixable in one visit. We clear the cap, inspect the gasket, and tell you which problem you actually have before quoting any repair.
In many cases, yes. The existing DuraFlex vent pipe determines what’s possible. We verify pipe diameter, condition, and listing compatibility before recommending an insert. If the vent is sound and correctly sized, we can often install a listed insert without replacing the entire chase. If it’s undersized or unlisted, we’ll tell you plainly and quote the correct reline. Call (855) 507-9184 for a free assessment.
We remove the old cap, inspect the chase interior for rust and debris, replace the cap with a correct-diameter DuraFlex-compatible termination, and check the chase crown for cracks or missing mortar. If the crown is damaged, we repair it in the same visit. The goal is keeping water out of the chase entirely. This is one of the most common repairs we make in Round Rock.
At minimum once a year, ideally in early fall before burn season starts. Round Rock’s live oaks drop leaves from late fall through spring, and cedar pollen season runs late winter. By October, caps are often partially packed. An annual inspection catches cracked caps, clogged screens, and early rust before water intrusion becomes a liner or firebox problem. It’s cheaper than the repair. Call (855) 507-9184 to book a sweep and cap check together.
Service Areas Near Round Rock
We serve Round Rock and the surrounding communities along the I-35 and 183 corridors. That includes Cedar Park, Anderson Mill, Brushy Creek, Jollyville, and Leander. If you’re in a neighboring area with a DuraFlex-vented fireplace, check our DuraFlex service in Hudson Bend or DuraFlex service in Wells Branch pages for specific coverage details.
Book Your DuraFlex Service in Round Rock Today
If your DuraFlex fireplace hasn’t been inspected this year, or if you’ve noticed smoke smell, poor draft, or water staining near the firebox, call us. We’ll send a tech who knows factory-built venting, not just brick flues. Reach Ashton Chimney at (855) 507-9184 for a free estimate. We serve all Round Rock ZIP codes: 78665, 78680, 78681, and 78682.
Written by Nolan Pruett, Owner at Ashton Chimney, serving Round Rock and the Austin metro since 2009.