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.
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AfterFast, Reliable Duct Repair & Sealing Across Lost Creek
Duct repair and sealing in Lost Creek, TX typically costs $340-$890 for most residential jobs, with full trunk-line replacement on older homes running $1,200-$2,400 depending on system size. Our crews reach Lost Creek properties from our Dallas-Fort Worth coordination office, and we schedule most repair work within 3-5 business days. Call (737) 252-1285 for a written estimate - we’ll photograph your ductwork first, then deliver a fixed price before any work starts.
Lost Creek sits in the thick of western Travis County’s Ashe juniper belt, and that matters more than most homeowners realize when their ducts start failing. The cedar pollen load here is among the highest measured anywhere in the country during December through February, and a compromised duct system doesn’t just waste energy - it actively recirculates that pollen through every room, all winter long. Our Duct Repair & Sealing team has worked the split-levels and ranch homes off Raintree Drive, the creek-bottom lots along Lost Creek Boulevard, and the wooded properties near Barton Creek Greenbelt. We know what these attics do to ductwork, and we document everything we find.
Why CleanRun Air Duct Cleaning Leander Is Lost Creek’s Preferred Duct Repair & Sealing Company
We’ve been serving the Austin metro since 2013, and Lost Creek has become one of our most frequent call-out areas for one reason: the housing stock. The 1970s-1990s ranch and split-level homes that dominate this CDP were built with original flex duct and duct board trunk lines that are now hitting 35-50 years of service. Our crews have photographed the interior of hundreds of these systems. We know what delaminating duct board looks like, and we know when cleaning alone is throwing good money after bad.
Every technician we send to Lost Creek is background-checked and uniformed under Haven Standard Clause 3: Verified Crews. We publish our license number on every estimate, not buried in a footer. The 365-Day Done Right Promise applies to every repair we make - if the seal fails, if the mastic cracks, if the connection pulls loose, we make it right in writing, not as a favor.
Our documented photo record is included on every visit, standard. You get before-and-after images of every duct run we touch, delivered as part of your job record. No other company in this market has held that practice since 2013.
Scheduling is coordinated from our Dallas-Fort Worth office, but the crew that arrives at your Lost Creek door knows the area - the limestone Hill Country terrain, the attic access challenges in these older ranch layouts, the pollen load that makes seal integrity here more critical than in flatter, less-wooded parts of the metro.
Our Duct Repair & Sealing Services in Lost Creek
Duct Sealing
Most Lost Creek homes we inspect have mastic seals and flex connections that have been baked brittle by attics exceeding 130°F through June, July, and August. The original latex-based sealants applied in the 1980s and 1990s simply weren’t formulated for this thermal cycling. Our duct sealing service removes the failed material and applies fresh, fiber-reinforced mastic to every joint, connection, and penetration - plenum to trunk, trunk to branch, branch to register boot. We pressure-test after sealing to verify leakage rates. Typical duct sealing in Lost Creek runs $340-$620 for a single-system home, with written pricing delivered before we open the first panel.
Flex Duct Repair
Flex duct in Lost Creek attics suffers two predictable fates: disconnection at the collar, or crushing under decades of blown insulation and technician traffic. The Hill Country limestone construction here often forces duct runs through tight, irregular attic spaces where flex gets kinked around framing or pulled loose by thermal expansion. We replace damaged flex with new, insulated runs sized to the original Manual D specification, secure them with mechanical collars and fresh mastic, and photograph every connection. Flex duct repair in Lost Creek typically costs $180-$420 per run, depending on length and attic access difficulty.
Metal Duct Repair
When we replace a failed duct board trunk in a Lost Creek home, we often fabricate the new trunk from galvanized sheet metal - sealed, insulated, and built to outlast the original by decades. Metal repair also covers corroded galvanized branch lines, separated slip joints, and damaged register boots. We cut, form, and seal on-site, then wrap with proper insulation to prevent condensation in those 130°F attics. Metal duct repair or replacement in Lost Creek ranges from $280 per section to $1,200+ for full trunk-line fabrication.
Duct Insulation
Uninsulated or degraded duct insulation in a Lost Creek attic is a double penalty: you’re paying to cool air that gains 15-25°F before it reaches the register, and you’re creating condensation conditions that accelerate metal corrosion and mastic failure. We install new fiberglass duct wrap or replace insulated flex with properly rated product, sealed at every seam with foil tape and mastic. Duct insulation work in Lost Creek typically runs $260-$580 for partial-system coverage, $780-$1,400 for full replacement.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
BeforeAfterTrusted Brands We Service in Lost Creek
Our equipment roster includes Rotobrush and Nikro for duct cleaning and camera inspection, plus Honeywell and Aprilaire components for air quality integration. We don’t perform duct repair with hardware-store tools - our crews carry professional-grade sealants, mechanical fasteners, and insulation products that match or exceed original specifications. Lost Creek customers receive the same equipment documentation we provide across all 52,000+ homes served since 2013: brand names, model numbers, and application notes in your written job record. If we’re replacing a register boot or fabricating a metal transition, you’ll know exactly what materials were used and why.
Common Duct Repair & Sealing Problems We See in Lost Creek Homes
- Delaminating duct board trunk lines. Because Lost Creek is unincorporated Travis County rather than inside Austin city limits, many homes were permitted under less stringent duct-sealing requirements. Our crews routinely find original late-1970s duct board trunk lines whose fibrous inner lining is shedding particulates into the supply and return ducts. Cleaning cannot restore this - the lining continues to degrade, and replacement with sealed metal is the only permanent fix.
- Brittle mastic seals from attic heat cycling. The 130°F+ temperatures in Lost Creek’s unventilated attacks during summer harden and crack original mastic applications. Once cracked, these seals pull unconditioned attic air - and with it, cedar pollen, insulation fibers, and dust - directly into the living space every time the blower cycles.
- Disconnected or crushed flex runs hidden under insulation. Hill Country attics with blown fiberglass or cellulose often bury flex duct connections where they can’t be seen without deliberate inspection. We’ve found runs completely separated at the collar, blowing conditioned air into the insulation for years while the homeowner wonders why certain rooms never reach temperature.
- Failed flex-to-metal connections at the plenum. The plenum - the large sheet-metal box on top of your air handler - connects to branch ducts through collars that seal with mastic and mechanical fasteners. Thermal expansion and vibration loosen these connections over decades, creating the largest single source of leakage in many Lost Creek systems we inspect.
Pricing for Duct Repair & Sealing in Lost Creek, TX
| Service | Typical Range in Lost Creek |
|---|---|
| Duct sealing (single system, accessible attic) | $340 - $620 |
| Flex duct repair/replacement (per run) | $180 - $420 |
| Metal duct repair (per section) | $280 - $580 |
| Duct board trunk replacement with sealed metal | $1,200 - $2,400 |
| Duct insulation (partial system) | $260 - $580 |
| Duct insulation (full system) | $780 - $1,400 |
| Camera inspection with written report and photos | $145 - $195 (credited toward repair) |
Three factors move Lost Creek jobs within these ranges: attic access difficulty (tight truss bays versus open walk-up), the extent of original material that must be removed, and whether we discover secondary damage - corroded register boots, water-stained ceiling panels, or pest intrusion - once work begins. If we find anything beyond the scoped work, we stop, photograph it, and deliver a revised written price before continuing. Haven Standard Clause 1: no work without a written price. Ever.
Our estimates are free. Bring a competitor’s written quote and we’ll provide a Free Second Opinion - our number next to theirs, line item by line item, with no obligation.
We Also Serve Cities Near Lost Creek
Our crews work throughout the northern Austin metro, including Lost Creek neighbors in Leander, Cedar Park, Brushy Creek, and Jollyville. The same documented photo record, written pricing, and 365-Day Done Right Promise applies in every community we serve.
Serving Lost Creek, TX - Our Local Coverage Area
We’re based in the Lost 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 - Duct Repair & Sealing in Lost Creek
They need replacing. Duct board with a delaminating fibrous inner lining cannot be restored by cleaning - the mechanical action of brushing or negative-pressure extraction actually accelerates fiber shedding. On a 1981 split-level off Raintree Drive, our techs ran camera inspection inside the original duct board trunk and found the fibrous lining delaminating and coating the supply and return ducts with visible fibers. We replaced the failing trunk run with sealed metal, re-mastic’d every accessible joint, and re-balanced the registers - the homeowner’s winter cedar-pollen complaints dropped noticeably once the system stopped pulling attic air. If your Lost Creek home has original duct board, we’ll show you the camera footage and deliver a replacement quote in writing. Call (737) 252-1285 to schedule inspection.
Lost Creek sits directly in the Ashe juniper belt where December-February pollen counts rank among the highest in the United States. Any leak in your duct system - cracked mastic, separated flex collar, failed register boot seal - creates negative pressure that draws attic air straight into your supply ducts. In Lost Creek’s wooded ravines and creek-bottom lots, that attic air carries an unusually heavy cedar-pollen load. Sealing every joint and penetration is the only fix. Call (737) 252-1285 for a leakage inspection with pressure testing.
We pressurize the duct system and measure total leakage with a calibrated flow hood, then use smoke pencils and infrared cameras to locate the dominant pathways. In Lost Creek’s blown-insulation attics, we also run a camera through every accessible duct run - disconnected or crushed flex often hides completely under insulation, invisible from the attic floor but obvious on camera. The inspection includes a written report with photos, and the fee is credited toward any repair work you proceed with.
It depends on what the camera shows. If your trunk lines are intact metal or replaceable sections of flex, sealing is typically the most cost-effective path - a $400-$600 seal job versus $3,000+ for full replacement. If we find delaminating duct board or multiple corroded metal sections, we’ll show you the photos and recommend replacement with a written price for both options. No pressure either way. The 365-Day Done Right Promise covers either approach. Call (737) 252-1285 to get the actual condition of your system documented.
Austin’s summer attic heat - regularly 130°F or higher in Lost Creek’s unventilated spaces - bakes latex and water-based mastic until it cracks and powders. Flex duct connections loosen as the rubberized collar material hardens. Insulation adhesive fails. The thermal cycling is more severe here than in milder climates, which means seals that might last 25 years elsewhere often fail in 15-20 years in Lost Creek. We use high-temperature-rated mastic and mechanical fasteners at every connection to account for this environment. Call (737) 252-1285 for an assessment of your seal condition.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Lost Creek and the Austin metro since 2013.