Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Before
After
Before
After
Before
AfterFast, Reliable Duct Repair & Sealing Across Round Rock
Round Rock homeowners dealing with uneven room temperatures, rising utility bills, or allergy flare-ups during cedar season usually have one underlying problem: air leaking from ductwork before it ever reaches the registers. Duct repair and sealing in Round Rock typically runs $280-$650 for most residential systems, with full sealing of a standard single-story home landing in the $400-$550 range. Our crews are dispatched from the Austin office and cover all Round Rock neighborhoods from Forest Creek to Teravista, usually scheduling within 2-4 business days. Call (737) 252-1285 for a written estimate.
We’ve worked in Round Rock long enough to know the local housing stock inside and out. The Dell-era subdivisions that define this market - Stone Canyon, Forest Creek, Cat Hollow, Teravista - share a common thread: original flex ductwork now pushing 20+ years, routed through attics that hit 140°F for months each summer. That combination degrades duct liners, loosens mastic seals, and creates the exact leakage points that drive up energy costs and circulate cedar pollen through living spaces. Our Duct Repair & Sealing team documents every run with before-and-after photography, so you see what was actually found and what was actually fixed.
Why CleanRun Air Duct Cleaning Leander Is Round Rock’s Preferred Duct Repair & Sealing Company
We’ve served Round Rock since adding it to our route schedule in our early years, and the pattern is consistent: homeowners here research thoroughly before calling, and they decide based on what a company can show them, not what it claims. That’s why we publish our price ranges, name our equipment brands, and deliver a written scope before any panel comes off.
Our Round Rock customers consistently mention two things in feedback: the photo record and the flat price. No per-vent add-ons. No “we found something unexpected” mid-job invoices. Haven Standard Clause 1 requires a written price before work starts, every time. Tomas Reyes established that practice in 2013, and it’s been non-negotiable across 52,000+ homes.
Technicians serving Round Rock are background-checked and uniformed under Haven Standard Clause 3: Verified Crews. You’ll get a name and photo before arrival, not a window of “sometime Tuesday.” Dispatch is coordinated from our Austin office, which keeps crews moving efficiently between Round Rock, Pflugerville, and Cedar Park without the overhead of a satellite location.
Our Duct Repair & Sealing Services in Round Rock
Duct Sealing
Most Round Rock homes lose 20-30% of conditioned air to attic leaks before it reaches the rooms below. Our sealing process starts with a pressure test to quantify that loss, then targets every joint, boot, and transition with mastic sealant rated for 140°F attic conditions. In Teravista and newer Stone Canyon builds, we often find builder-grade tape dried to dust; in Forest Creek and Cat Hollow, the patchwork galvanized-to-flex transitions are the real problem. Sealing runs $320-$480 for a typical 1,500-2,500 square foot Round Rock home.
Flex Duct Repair
Flex duct in Round Rock attics takes a beating. The black liner degrades from UV exposure where it enters the plenum, and the inner wire helix collapses where supports have failed. We replace damaged sections with new flex rated for negative-pressure extraction systems, supported at proper intervals to prevent sagging. A single run replacement in Round Rock typically costs $180-$340; multiple runs or full system replacement runs $650-$1,200. We use Guardsman and Nikro materials that hold up to our local heat load.
Metal Duct Repair
Older Round Rock homes - particularly in Cat Hollow and the original Forest Creek sections - still have galvanized steel trunk lines. These don’t flex, crack, or degrade like flex duct, but their seams and takeoff joints are prone to separation after decades of thermal cycling. We reseal metal seams with brush-applied mastic, replace rusted sections, and install proper flex transitions where previous repairs used tape or unsealed clamps. Metal repair in Round Rock runs $250-$500 depending on accessibility and extent of corrosion.
Duct Insulation & Mastic Sealant
Round Rock attics don’t just leak air; they heat it. Duct insulation in unconditioned spaces here is non-negotiable. We replace degraded insulation with formaldehyde-free wrap and seal every penetration with mastic that stays flexible from 40°F winter nights to peak summer attic temperatures. Mastic sealant application alone - the most cost-effective upgrade for many Round Rock homes - runs $280-$420 for a full system. The work is photographed and included in your documented photo record.
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.
BeforeAfterTrusted Brands We Service in Round Rock
We stock parts and materials from Rotobrush, Honeywell, Guardsman, and Nikro - brands you can look up independently before we arrive. For Round Rock homeowners, that means no waiting on special orders for common flex diameters, mastic compounds, or register boots. Our trucks carry inventory matched to the 6-inch and 8-inch flex runs standard in local tract homes built 1993-2010. If your system uses Aprilaire or Abatement Technologies components, we service and seal those too. Every material is named on your written scope before work begins.
Common Duct Repair & Sealing Problems We See in Round Rock Homes
- Failed mastic at galvanized-to-flex transitions in Forest Creek and Cat Hollow. The patchwork duct systems in these 1980s-1990s subdivisions trap cedar pollen and construction dust at every joint. Generic cleaning misses these spots entirely; proper sealing requires knowing the layout in advance.
- Collapsed flex duct from attic heat cycling. Round Rock attics exceed 140°F for four to five months annually. Flex duct sagging on inadequate supports kinks and collapses, choking airflow to distant rooms. We see this most in Stone Canyon and Teravista homes with long branch runs to second-story bedrooms.
- Contaminated return ducts bypassing filtration. Leaky return plenums and cabinet seams pull unfiltered attic air - laden with cedar pollen, dust, and microbial growth - straight into the air handler. The filter never sees it. Sealing the return side is often more impactful than supply-side work.
- Fogging “sanitizers” masking real problems. The cedar fever season drives demand for quick fixes. Fogging deposits a chemical film that temporarily suppresses odor but leaves pollen and spores in place. Once the fog dissipates, recirculation resumes. Source removal through negative-pressure extraction and physical sealing is the only lasting fix.
Pricing for Duct Repair & Sealing in Round Rock, TX
We publish ranges because Haven Standard Clause 1 requires a written price before work starts, and that price should not surprise you. Here’s what duct repair and sealing costs in Round Rock’s current market:
| Service | Typical Range |
|---|---|
| Mastic sealant, full system | $280-$420 |
| Single flex duct run repair/replacement | $180-$340 |
| Duct sealing with pressure test (typical home) | $320-$480 |
| Metal duct repair (seams, sections, transitions) | $250-$500 |
| Multiple flex runs or partial system replacement | $650-$1,200 |
| Full duct sealing + insulation wrap | $750-$1,400 |
Factors that move Round Rock jobs toward the higher end: homes over 3,000 square feet with 15+ duct runs, attics with limited access requiring decking removal, galvanized trunk lines needing section replacement, and systems that haven’t been serviced in 20+ years and require extensive pre-cleaning before sealing can adhere properly. Every estimate is free, written, and valid for 30 days. Call (737) 252-1285 to schedule.
We Also Serve Cities Near Round Rock
Our crews work Duct Repair & Sealing in Round Rock and surrounding communities including Pflugerville, Hutto, Georgetown, and Cedar Park. Scheduling is coordinated from our Austin office to keep response times consistent across the metro.
Serving Round Rock, TX - Our Local Coverage Area
We’re based in the Round Rock 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 - Duct Repair & Sealing in Round Rock
The December-February mountain cedar bloom deposits microscopic pollen throughout duct interiors, and Round Rock sits directly in the highest-concentration zone of this allergen. Once embedded in ductwork, cedar pollen recirculates for months after the outdoor season ends. Cleaning removes the reservoir; sealing prevents recontamination from attic leaks. Call (737) 252-1285 for a pre-season inspection.
The transition joints between galvanized and flex are the failure points in these hybrid systems. Mastic degrades faster at dissimilar-material junctions, and the original construction often left gaps that were never properly sealed. We camera-inspect every transition before quoting, because sealing without addressing trapped debris at these joints just seals the problem inside. Our field team knows Forest Creek’s phase-build layouts and can identify which runs were original versus added during later expansion.
Sealing alone will not remove accumulated cedar pollen, dust, or microbial growth already inside the ducts. For Round Rock homes with 20+ years of buildup, we recommend negative-pressure extraction cleaning first, then sealing to prevent recontamination. Sealing dirty ducts traps allergens inside and can actually worsen indoor air quality by preventing natural dilution through leaks. We photograph the interior condition before recommending either service.
Cleaning removes the reservoir of allergens already present; sealing prevents new unfiltered air and attic contaminants from entering the system. For Round Rock allergy sufferers, cleaning without sealing leaves you vulnerable to recontamination through leakage, while sealing without cleaning traps existing pollen inside. The effective sequence is clean first, seal second, with a pressure test to verify results. Our documented photo record shows both steps.
Flex duct in 140°F attics should be inspected every 5-7 years for liner degradation and seal failure. Homes in the 1993-2010 Dell-era build wave are now at or beyond that interval. If you’re experiencing uneven temperatures, rising summer electric bills, or allergy symptoms that peak during cedar season, schedule an inspection regardless of elapsed time. The inspection and written estimate are free.
Schedule Your Round Rock Duct Repair & Sealing Estimate
Round Rock’s combination of aging Dell-era ductwork, extreme attic temperatures, and intense cedar pollen creates repair and sealing challenges that generic services miss. We’ve documented the specific failure modes in Forest Creek, Cat Hollow, Stone Canyon, and Teravista - patchwork galvanized-flex transitions, heat-collapsed runs, and contaminated return systems - and we address them with written prices, photographed results, and the 365-Day Done Right Promise backed in writing on every job.
Call (737) 252-1285 to speak with a live person and schedule your free estimate. You’ll receive a written scope and price before any work begins, a documented photo record of every duct run when we finish, and the full H.A.V.E.N. Standard on every visit.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Round Rock since adding it to our route schedule in our founding years.
Duct Repair & Sealing in Nearby Areas