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 Sealing Across Lakeway
Duct sealing in Lakeway typically runs $450 – $1,200 for a whole-home seal, depending on system size and accessibility, and most jobs are scheduled within a few business days after your call. We’re the Duct Sealing crew for Hollis Air Duct Cleaning, dispatching from our Austin office to serve Lakeway homes directly. Whether you’re in a 1990s stucco subdivision off Lohmans Crossing, a custom build in Rough Hollow, or a hillside place in The Hills with heat-pump retrofits and long flex runs, we know the duct layouts common here and what fails first. Call (361) 326-5060 for a free estimate with a written price before any work starts.
Why Hollis Air Duct Cleaning Is Lakeway’s Preferred Duct Sealing Company
We’ve been working in Lakeway long enough to know which homes on the limestone ridges east of Lake Travis have original ductwork sized for gas furnaces that now struggle with high-static variable-speed heat pumps. Our technicians are background-checked, uniformed, and expected to behave by The Garrison Code: arrive inside the quoted window, price in writing, complete the job by the book, and leave the site clean.
Every repair we make carries the 365-Day Done Right Promise in writing. If the seal fails within a year, we come back and make it right at no charge, including a free second visit. No negotiation, no runaround.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday for someone to pick up.
We document every job with before-and-after photos and moisture readings, especially when an insurer needs proof that sealing was the right call after water intrusion.
Duct Sealing Services in Lakeway
Duct Sealing Services in Lakeway address the leaks, gaps, and disconnected joints that let conditioned air escape into attics, crawl spaces, and wall cavities before it ever reaches your registers. In Lakeway’s climate, where cooling systems run from May through October and spring pollen loads are some of the heaviest in Central Texas, even a 15% duct leakage rate can mean rooms that never cool evenly, utility bills that climb for no clear reason, and pollen getting pulled into the return through gaps in unconditioned spaces. We seal with mastic and reinforced mesh, not tape that dries and fails, and we verify our work with pressure testing.
A typical whole-home duct sealing in Lakeway runs $450 – $1,200. Smaller partial seals or single-zone systems start around $350. We give you the written price before we touch anything.
Post-Storm Damage Assessment and Sealing
After a spring storm or flash flood in Lakeway, many homeowners need to know whether their ducts can be sealed or must be replaced entirely. We run a camera inspection with negative pressure and HEPA filtration, take moisture readings at multiple points, and deliver written documentation with before-and-after photos that insurers accept. Sealing over water-damaged ductwork without this step traps moisture and invites mold, and your adjuster will reject the claim later.
Heat-Pump Retrofit Sealing
Because most of Lakeway east of Lake Travis was platted with septic systems and no municipal gas grid, many retrofitted homes now run high-static variable-speed heat pumps on ductwork originally sized for a standard gas furnace. Leaks and pollen-packed flex runs show up worst at the farthest registers long before the air handler complains. We check static pressure at those distant registers before we seal, so we don’t make an existing airflow problem worse by tightening a system that was already choking.
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.
Duct Insulation in Lakeway
Duct Insulation in Lakeway targets the thermal loss that happens when conditioned air travels through duct runs in 140-degree attics or humid crawl spaces. In Lakeway’s long cooling season, uninsulated or poorly insulated ducts can raise supply air temperature by 10 – 15 degrees before it reaches your bedroom register, which means your heat pump runs longer, works harder, and wears out faster. We use professional-grade insulation materials, including products from Abatement Technologies and Guardsman, sized to the R-value appropriate for our Central Texas climate.
Whole-home duct insulation in Lakeway typically costs $800 – $2,000, with smaller partial jobs or single-zone wraps starting around $500. As always, the price is written down before any work starts.
Attic Duct Wrap and Repair
Lakeway’s limestone hills produce dusty conditions, and attic temperatures here can damage insulation jackets over time. We remove degraded wrap, clean the duct surface, and install new insulation with proper vapor barriers so condensation doesn’t form between the duct and the wrap. This is especially important in older Lakeway homes where original insulation has compressed or torn.
Crawl Space and Encapsulated Runs
Some Lakeway homes, particularly 1970s – 1980s builds near the lake, have duct runs in crawl spaces that stay humid year-round. We inspect for moisture intrusion, seal any leaks first, then insulate with materials rated for damp locations. Skipping the sealing step and insulating over wet ducts just traps water against the metal.
Trusted Brands We Service in Lakeway
We carry and install filtration and sealing products from Abatement Technologies, Guardsman, Aprilaire, and Honeywell, and our equipment roster includes Rotobrush rotary brush systems and Nikro negative-air machines for source removal before we seal. For Lakeway homeowners, this means we stock the parts and materials to complete most jobs without waiting on shipping, and our technicians can explain exactly which product we’re using and why. We don’t show up with hardware-store tape and hope for the best.
Common Duct Sealing Problems We See in Lakeway Homes
- Sealing over storm-damaged ductwork without documentation. In The Hills and Rough Hollow, we’ve found contractors who sealed flex ducts that had taken on water during spring floods, trapping moisture inside where mold grows and insurers later deny claims. We always run moisture readings and camera inspections first, and we write down what we found.
- Skipping source removal before sealing. Lakeway’s heavy Ashe juniper and oak pollen season leaves a sticky film inside flex runs. Lock that in place with new sealant and it keeps shedding into your supply air for years. We negative-air clean with HEPA filtration before we seal.
- Sealing a gas-furnace-sized system now running a high-static heat pump. The original ductwork in many 1990s Lakeway subdivisions can’t handle the airflow demands of variable-speed heat pumps. Seal those leaks without checking static pressure at the farthest registers, and you make the real problem worse while the homeowner pays for work that doesn’t solve the uneven temperatures.
- Ignoring stucco penetration points. Lakeway’s stucco-and-stone homes, common in The Hills and Lakeway proper, often have exterior duct penetrations that crack with foundation movement on the limestone ridges. We seal from the inside and address these exterior gaps so pollen and attic dust don’t re-enter through a path the homeowner can’t see.
Pricing for Duct Sealing in Lakeway, TX
Whole-home duct sealing in Lakeway runs $450 – $1,200, with most single-family homes in the $600 – $900 range. Duct insulation runs $800 – $2,000. What moves the price: system size (single-zone versus multi-zone custom homes in Rough Hollow), accessibility (crawl space versus attic), whether we need to remove degraded old sealant first, and whether the job follows storm damage requiring camera inspection and moisture documentation.
We do not quote per-vent prices or teaser coupon rates that balloon once the van is in your driveway. One flat price per system, agreed in writing before work starts. That’s The Garrison Standard.
Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Lakeway
Our Austin office dispatches crews throughout Central Texas, including Duct Sealing in Lakeway and surrounding metros. We also travel to Houston, San Antonio, Dallas, and Fort Worth for larger commercial projects and multi-system residential jobs.
Serving Lakeway, TX - Our Local Coverage Area
We’re based in the Lakeway 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 Duct Sealing in Lakeway
We run a camera inspection with negative pressure and HEPA filtration, take moisture readings at multiple points along the run, and deliver written documentation with before-and-after photos. If water reached only the last few feet of return near the plenum and the flex runs are dry, we seal those joints with mastic and mesh and leave the intact ductwork in place. If the liner is saturated or structurally compromised, we document that for replacement and write it up so your insurer accepts the finding. Call (361) 326-5060 to schedule an assessment.
Yes, but only if source removal happens first. Sealing leaks in the return side prevents Lakeway’s heavy spring pollen from being pulled into the duct system through gaps in attics and crawl spaces. However, sealing over existing pollen buildup without cleaning first locks that sticky film in place, where it continues shedding into your air. We negative-air clean with HEPA filtration before we seal. Call (361) 326-5060 for an estimate.
The original ductwork in most 1990s Lakeway subdivisions was sized for the lower static pressure of a standard gas furnace. High-static variable-speed heat pumps, common in retrofits here because there’s no municipal gas grid, force more air through the same ducts. Sealing leaks without checking static pressure at the farthest registers can make an existing airflow restriction worse, so we measure first and adjust our approach. Call (361) 326-5060 to have your system evaluated.
In most cases, yes. We access and seal ductwork from the interior, through registers and air handler connections, using long-reach tools and camera guidance. Exterior stucco penetrations get sealed from the outside with appropriate materials, but we don’t cut into finished walls unless structural damage requires it, and we’d discuss that explicitly with a written price first. Call (361) 326-5060 to discuss your home’s layout.
We can assess immediately, but we seal only after the duct interior reads dry on our moisture meters and we’ve documented the findings in writing. In a 1998 two-story in The Hills, we found water only in the last four feet of return, sealed those joints once dry, and delivered documentation the adjuster accepted. A second Rough Hollow home with soaked flex ducts behind stucco was declared replacement, not seal. The timeline depends on drying conditions, not our schedule. Call (361) 326-5060 to start the assessment.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Lakeway and Central Texas since 2004.