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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After
Before
After
Before
AfterFast, Reliable Duct Sealing Across Roanoke
We dispatch our Duct Sealing crews to Roanoke from our Dallas-Fort Worth office, and most Roanoke homeowners see us inside a two-hour window. If you live off Highway 114 near Fairway Ranch or down a county road past Trophy Club Drive, we’ve likely already worked on a home with ductwork built the same year as yours. Call (361) 326-5060 to schedule a free inspection and written estimate.
Why Hollis Air Duct Cleaning Is Roanoke’s Preferred Duct Sealing Company
We’ve been sealing ducts in Roanoke since long before the Barrington development filled in, and our reputation here is built on showing up when we said we would. Our technicians are background-checked and uniformed, and the price we write down before any work starts is the price you pay. No one at Hollis works on commission, so there’s no incentive to find problems that aren’t there.
Our 365-Day Done Right Promise covers every duct sealing job in writing. If a sealed joint fails or a mastic application cracks within a year, we come back and make it right at no charge, including a free second visit. That’s not a verbal assurance. It’s printed on every Hollis invoice.
Phones are answered by a live person 24 hours a day, 7 days a week. No callback queues, no voicemail loops, no waiting until Monday to book a Tuesday slot.
Air Duct Sealing in Roanoke
Air Duct Sealing in Roanoke means closing the gaps, cracks, and disconnected joints that let conditioned air escape before it reaches your rooms. In a typical Roanoke home, we find 20 to 30 percent of heated or cooled air is lost to duct leakage, which means your HVAC system runs longer, wears faster, and costs more every month. A full duct sealing job in Roanoke runs $450 to $1,200 depending on system size, accessibility, and whether we need to seal from inside the ducts or access attic and crawlspace runs.
What We Actually Seal
We seal supply and return trunk lines, branch connections, plenum joints, and register boots using mastic and fiberglass mesh on metal ductwork, and specialized sealant on flex runs. In Roanoke’s older homes near downtown, we often find original asbestos-era insulation wrapped around metal trunks. We work around it safely, seal the joints beneath, and document what we found for your records.
When Sealing Beats Cleaning
If your vents blow dust but the ducts test clean, the problem is usually air pulling from your attic or crawlspace through unsealed joints. Cleaning won’t fix that. Sealing will. We test with a duct blaster before and after to prove the leakage reduction, and we show you the numbers.
Duct Sealing Services in Roanoke
Duct Sealing Services in Roanoke cover everything from spot repairs on crushed flex runs to full-system mastic sealing on original metal ductwork. Most Roanoke jobs fall in the $450 to $1,200 range, with simpler repairs on newer homes starting around $300 and full restorations on historic properties reaching $1,500 if we need to access multiple attic zones or repair damaged insulation. Every job gets a written price before we start, and that price does not move at the door.
Our Sealing Process
We pressurize the system and use a fog test or camera inspection to locate leaks. Then we seal accessible joints with mastic and mesh, reconnect crushed flex, and replace damaged sections. For homes in Fairway Ranch and Barrington, we often find flex duct kinked by attic storage or original installation shortcuts. We straighten the runs, support them properly, and seal the connections.
Equipment We Bring
Our crews carry professional-grade tools, including Rotobrush rotary systems for access and Abatement Technologies negative-air machines for containment. We use Aprilaire and Guardsman filtration products when we need to protect your home during dusty attic work. This is the same equipment commercial crews use, not hardware-store gear.
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.
Trusted Brands We Service in Roanoke
We stock parts and sealants from Aprilaire, Abatement Technologies, Guardsman, and Rotobrush, which means most Roanoke jobs don’t wait on a parts run to Dallas. Our trucks carry mastic, fiberglass mesh, flex duct, and connection collars in standard sizes. If your system uses a less common configuration, we can usually source it next-day through our Dallas-Fort Worth supply house. That matters in July, when a leaking attic return can cost you an extra $80 to $120 on your electric bill while you wait.
Common Duct Sealing Problems We See in Roanoke Homes
- Original metal trunk lines with failing tape. Homes built before 1980 near downtown Roanoke often have metal ductwork sealed with cloth-backed duct tape that has dried and peeled. We remove the old tape, clean the joints, and apply mastic and mesh for a permanent seal.
- Crushed flex runs in newer construction. In Fairway Ranch and Barrington, flex duct installed during the 2000s building boom was often routed through tight attic spaces and crushed by storage boxes or foot traffic. We replace or reroute the damaged sections and seal all connections.
- Disconnected runs in converted spaces. Rural Roanoke properties on large lots sometimes have ductwork that was extended to feed a converted garage or added room without proper sealing. The disconnected joints pull attic air and dust into the system.
- Pressure imbalances from poor return design. North Texas’s long cooling season means systems run hard for months. When supply ducts leak, returns can’t pull enough air back, and the house goes negative, drawing humid outside air through every crack. Sealing restores balance and cuts humidity load.
Pricing for Duct Sealing in Roanoke, TX
A typical duct sealing job in Roanoke runs $450 to $1,200 for a full system, with smaller repairs starting around $300. What moves the price: how many attic or crawlspace zones we need to access, whether your ductwork is metal or flex, and whether we find disconnected runs that need reconnection rather than just sealing. Homes in Barrington with single attic access and straight flex runs tend toward the lower end. Historic homes near downtown with multiple small attic hatches, original metal trunks, and asbestos-era insulation take more time and sit at the higher end.
We do not quote per-vent or per-linear-foot prices. We price by the system, in writing, before any work starts. Every estimate is free, and we explain what we found before we ask you to approve anything. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Roanoke
Our crews seal ducts across the northern Tarrant and southern Denton county area, including Duct Sealing in Roanoke and surrounding communities. We regularly work in Flower Mound, Southlake, Argyle, and Justin, often routing between jobs on the same day. If you’re in one of these cities and your home has similar vintage or construction type to a Roanoke property, we’ve likely already solved the same problem on your street.
Serving Roanoke, TX - Our Local Coverage Area
We’re based in the Roanoke 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 Roanoke
If your vents blow visible dust but a camera inspection shows relatively clean duct walls, the dust is likely coming from unsealed joints pulling attic or crawlspace air. We test duct leakage with a pressurization fan; if your system leaks more than 10 percent of total airflow, sealing will solve the problem where cleaning cannot. Call (361) 326-5060 and we’ll run the test during your free estimate.
Crushed or kinked flex duct runs in attics, usually caused by storage boxes placed on top of the duct or installers routing through spaces too tight for the diameter. The restriction reduces airflow to far rooms and strains the HVAC system. We straighten, support, and seal the runs, and airflow typically improves immediately.
Expect original metal trunk lines with failing tape or dried mastic, possibly wrapped in asbestos-era insulation that we must work around carefully. Our tech ran a camera inspection in a 1950s home near downtown Roanoke and found the supply and return ducts wrapped in original asbestos-era insulation with disconnected joints in two rooms. We sealed the trunk lines with mastic and mesh, reconnected the crushed runs, and the homeowner noticed less dust at the registers within a week. We document everything and explain your options before touching anything.
Yes, because unsealed return ducts pull humid attic air that can carry pollen, mold spores, and dust into your system. North Texas’s hot, humid summers mean attics reach 140 degrees with high moisture content; when that air enters your ducts, it distributes allergens throughout the house. Sealing returns eliminates that infiltration path and reduces the humidity load your AC must handle.
We can, though long runs to outbuildings or converted barns often require additional support and insulation after sealing. Barnett Shale-era duct systems in rural properties on large lots may have disconnected runs feeding converted spaces, causing pressure imbalances and dust infiltration. We inspect the full run, seal accessible joints, and flag any sections that need structural repair or rerouting. Call (361) 326-5060 for an exact quote on your specific layout.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Roanoke and the Dallas-Fort Worth area since 2004.