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.
Fast, Reliable Duct Repair & Sealing Across Jollyville
Duct repair and sealing in Jollyville typically costs $280-$750 for most homes, with full system resealing running higher if original 1970s-1990s duct board needs replacement. We’re the Duct Repair & Sealing team at CleanRun, and we know Jollyville’s housing stock - the ranch-style tract homes off Anderson Mill Road, the two-stories near Hunters Chase, the split-levels along Pond Springs Road - because we’ve been documenting what we find inside them since 2013. Our scheduling desk is in Austin, and crews run Jollyville calls daily. If your registers are blowing dust, your upstairs rooms won’t cool, or your air handler runs nonstop, call (737) 259-5752. We’ll put a written price in your hand before any panel comes off.
Why CleanRun Air Duct Cleaning Round Rock Is Jollyville’s Preferred Duct Repair & Sealing Company
We’ve served Jollyville homeowners with written prices and documented photo records since our first year in business. No manager-approval games. No “call for pricing.” Haven Standard Clause 1: the price is written before work starts, every time.
Our crews know the local failure patterns. In Jollyville’s 1970s-1990s builds, we regularly find fiberglass duct board liners delaminating after 35-50 years of near-continuous AC runtime - a debris profile that doesn’t show up in newer Cedar Park or Pflugerville construction. That local knowledge changes what we bring to the job and what we quote.
Every technician is background-checked, uniformed, and identified by name before arrival. Haven Standard Clause 3: Verified Crews. The license number is published on this page, not buried in a footer.
Our 365-Day Done Right Promise is backed in writing on every job. If the work isn’t right, we make it right. Not a policy subject to manager approval - a written guarantee.
Our Duct Repair & Sealing Services in Jollyville

Duct Sealing with Mastic Sealant
Jollyville’s pre-energy-code duct systems were sealed with mastic or foil tape that’s now brittle from decades of 140°F attic cycling. We apply professional-grade mastic sealant - a thick, fiber-reinforced compound that remains flexible - to reconnect separated plenum boots, trunk takeoffs, and register collars. On a typical Jollyville ranch off Balcones Club Drive, we’ll seal 15-25 linear feet of accessible duct seams and post-test with a blower door or static pressure reading to verify the fix. Mastic sealant work in Jollyville runs $280-$450 for accessible systems.

Flex Duct Repair
The flex duct inner liners in Jollyville’s original attic runs weren’t rated for 40-plus years of thermal cycling. We find collapsed liners at trunk takeoffs - sections where the duct is literally blowing conditioned air into the attic, not the bedroom. Our crew cuts out the failed section, installs new insulated flex duct with mechanical clamps and mastic-sealed collars, and photographs the repair before closing the attic. Flex duct repair in Jollyville typically runs $180-$340 per run replaced, with most homes needing 2-4 runs.

Metal Duct Repair
Some Jollyville homes - particularly the handful of custom builds from the early 1980s - have galvanized metal trunk lines that have rusted at seams or separated at expansion joints. We patch with sheet metal and seal with mastic, or replace short sections when corrosion is through-wall. Metal duct repair in Jollyville starts around $320 for accessible sections.

Duct Insulation
Original insulation on Jollyville’s attic ducts was minimal by current standards, and what’s left is often compressed, moisture-damaged, or chewed by roof rats that move in from the greenbelt corridors. We wrap repaired or sealed ducts with new fiberglass insulation jacket - R-6 minimum - and secure with mechanical fasteners, not tape that’ll fail in two summers. Duct insulation in Jollyville runs $4-$7 per linear foot of duct, with typical partial-system jobs at $400-$650.

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.
Before
AfterTrusted Brands We Service in Jollyville
Our equipment roster includes Rotobrush rotary brush systems for mechanical agitation inside duct runs, Nikro negative-air machines for controlled debris extraction, and Honeywell media filters and whole-home air cleaners we install when the original system can’t handle Jollyville’s cedar-fever loading. We don’t list brands to impress. We list them so you can look up what we’re using before you agree to a price. Every tool on a Jollyville job is professional-grade and traceable to manufacturer specifications.
Common Duct Repair & Sealing Problems We See in Jollyville Homes

- Fiberglass duct board liner shedding into the airstream. The original liner in Jollyville’s 1975-1995 homes was never designed for 35-50 years of continuous airflow. We pull registers and find glittering fiberglass particulate on the camera - a respiratory irritant that standard duct cleaning won’t fix without sealing or replacement.
- Flex duct inner liners collapsed at trunk takeoffs. Forty years of attic heat cycling degrades the wire helix and inner plastic liner. The duct looks intact from outside, but airflow is bypassing into the attic. We verify with camera inspection and replace the failed section.
- Mastic and foil-tape connections separated at plenum boots. Pre-energy-code sealing methods weren’t built for Jollyville’s runtime hours. Supply and return boots leak conditioned air into attic spaces, raising bills and starving rooms of airflow.
- Attic insulation compromised by moisture or pests. Jollyville’s greenbelt-adjacent neighborhoods see roof rat activity, and attic humidity from duct leaks saturates original insulation. We repair the duct, then reinsulate to prevent condensation and energy loss.
Pricing for Duct Repair & Sealing in Jollyville, TX
Most Jollyville duct repair and sealing jobs fall between $280 and $750. Here’s how that breaks down:
| Service | Typical Range in Jollyville |
|---|---|
| Mastic sealant resealing (accessible system) | $280-$450 |
| Flex duct repair/replacement (per run) | $180-$340 |
| Metal duct patch or section replacement | $320-$580 |
| Duct insulation (partial system) | $400-$650 |
| Full system evaluation with camera inspection | $150-$250 (credited toward repair) |
What moves a job to the higher end: multiple collapsed flex runs, duct board that needs full replacement rather than sealing, or attic access that requires decking removal. We don’t know which you have until we look. The evaluation fee is $150-$250 and applies directly to any repair work you approve. Every price is written before work starts - Haven Standard Clause 1. No exceptions.
Call (737) 259-5752 for a free estimate. We’ll schedule a visit, run the camera, and put a number in writing.
We Also Serve Cities Near Jollyville

Our crews run daily to Jollyville and the surrounding communities: Round Rock to the northeast, Brushy Creek and Wells Branch to the east, and Pflugerville to the southeast. Same written-price standard, same documented photo record, same 365-Day Done Right Promise applies to every home we enter.
Serving Jollyville, TX - Our Local Coverage Area
We’re based in the Jollyville 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 Jollyville

Because the camera reveals structural failures that cleaning alone cannot fix. In Jollyville’s 1970s-1990s housing stock, we routinely find fiberglass duct board liners delaminating and flex duct inner liners collapsed at takeoffs - damage caused by 35-50 years of thermal cycling, not ordinary dirt accumulation. Cleaning debris out of a duct with a collapsed liner just sends more conditioned air into the attic. We photograph the failure, show you the image, and quote the repair in writing before proceeding. Call (737) 259-5752 if your last cleaning didn’t solve the dust problem - we’ll run a camera and tell you what we’re actually looking at.
It loads the system with exceptionally fine pollen from November through February, accumulating in duct board pores and on flex duct interior surfaces at volumes we don’t see in cooler, less pollen-intensive climates. That biological loading combines with decades of accumulated dust to form a cohesive mat that restricts airflow and harbors mold when attic humidity spikes. The real damage, though, is to the duct materials themselves - cedar pollen is acidic and contributes to liner degradation over time. We address this with sealed duct systems and upgraded filtration, not just cleaning. Call (737) 259-5752 for an evaluation that includes filter sizing recommendations.
Visible fiberglass particulate at supply registers is the clearest indicator - tiny glittering fibers that reappear within days of surface cleaning. You may also notice uneven cooling between rooms, an air handler that short-cycles, or dust that seems to generate faster than it should. We verify with camera inspection: the borescope shows delaminating liner as a fuzzy, shedding surface rather than smooth duct board. If we find it, we quote sealing or replacement in writing before touching the material. Call (737) 259-5752 to schedule a camera inspection - the evaluation fee applies to any repair work.
Four decades of thermal cycling in attics that regularly exceed 140°F degrades the wire reinforcement helix and the plastic inner liner. Original installation clamps and tape were never rated for that lifespan. The failure is invisible from outside - the duct jacket looks intact - but airflow is bypassing into the attic through the collapsed section. We find it with camera inspection and confirm with a blower motor amp draw test: collapsed runs show abnormally low static pressure and high amp draw as the air handler works against the restriction. Replacement with new flex duct, mechanical clamps, and mastic-sealed collars fixes it permanently. Call (737) 259-5752 for a free estimate.
Yes. Our Rotobrush and Nikro systems meet or exceed NADCA equipment standards for mechanical agitation and negative-pressure extraction. For sealing work, we use professional-grade mastic and mechanical fastening methods - not consumer tape products - and post-test repairs with static pressure or blower motor readings to verify performance. The equipment list is part of every written scope. You can verify manufacturer specifications independently before approving any work. Call (737) 259-5752 for a free estimate - we’ll specify exactly what equipment applies to your job.
Schedule Your Duct Repair & Sealing in Jollyville
We’re the team that shows you the photo before saying what needs to happen next. Every Jollyville job starts with a written price, includes a Documented Photo Record of every duct run before and after, and ends with the 365-Day Done Right Promise in your hand - not on a website, in writing. Call (737) 259-5752. A live person answers, 24/7. We’ll put you on the schedule, run the camera, and give you a number you can compare. Free Second Opinion on any written estimate from another company. Haven Standard Clause 1: the price is written before work starts. Always.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Round Rock, serving Jollyville since 2013.




Before
After
Before
After