Fast, Reliable Duct Repair & Sealing Across Shady Hollow
Duct repair and sealing in Shady Hollow typically runs $180-$650 depending on whether we’re patching a single flex-duct run or resealing an entire system, and most jobs are completed in a single visit. Our Duct Repair & Sealing team knows the 78739 area well - we’ve been driving out to homes off Slaughter Lane and Brodie Lane since the 1980s, back when Shady Hollow was still filling in as a master-planned community. If your vents are blowing weak, your upstairs rooms won’t cool, or your energy bills have climbed without explanation, there’s a fair chance your ductwork has separated at a joint or shed interior lining into the airstream. Call (866) 347-2063 and we’ll get a technician out, usually same day or next day.
Why Bellows Air Duct & Vent Co. of Texas Is Shady Hollow’s Preferred Duct Repair & Sealing Company
We’ve worked on enough homes in Shady Hollow to know the patterns. The master-planned construction here means most houses share the same vintage of builder-grade flex duct and fiberglass duct board, and we’ve replaced or sealed hundreds of these systems over 42 years in business. Our customers here tend to be longtime homeowners, not flippers - people who want the job done right because they plan to stay another twenty years.
Our reviews from Shady Hollow and the surrounding Southwest Austin area reflect that steady approach. Homeowners mention our technicians showing up on time, explaining what they found with camera footage, and leaving the attic cleaner than they found it. We’re not the cheapest option, and we don’t try to be. We’re the square deal: one honest price shown before we start, backed by our 90-Day Done Right Promise in writing.
Response time to Shady Hollow is typically same-day or next-day, since we’re based in Houston with technicians covering the Austin metro area including 78739. Calls are answered by a live person 24 hours a day, not a voicemail tree. And every technician who enters your home is background-checked and uniformed - that’s been non-negotiable since Wade Kellerman founded Bellows in 1984.
Our Duct Repair & Sealing Services in Shady Hollow
Flex Duct Repair
Shady Hollow’s homes were built with flex duct that simply wasn’t designed to last 30-40 years. The plastic inner liner cracks, the insulation compresses, and the wire helix sags between supports. We see this constantly in attics over homes near Shady Hollow Drive and River Hills Drive, where original duct runs have drooped onto ceiling joists or pulled completely free at the plenum. Our crew replaces damaged sections with new insulated flex duct rated for Texas attic temperatures, supported properly so it won’t sag again. A typical flex duct repair in Shady Hollow runs $180-$340 per run.
Duct Sealing
Even ducts that look intact are often leaking 20-30% of conditioned air into unconditioned attic space. We pressurize the system and use smoke testing to find every gap, then seal accessible joints with mastic sealant - not duct tape, which fails in months. For Shady Hollow homes with original 1980s-90s construction, this is often the single most cost-effective improvement you can make. Whole-system sealing typically runs $450-$650 here, and the energy savings usually pay back within two summers of Austin heat.
Metal Duct Repair
Some Shady Hollow homes, particularly those with later additions or custom builds near the Hill Country edge, have galvanized metal ductwork. Metal ducts don’t sag like flex, but they corrode at seams and can separate at joints after decades of thermal expansion. We repair metal ducts with proper sheet-metal patches and sealants, or recommend sectional replacement when corrosion is too advanced. Metal duct repair in Shady Hollow generally runs $220-$480 depending on accessibility and extent of damage.
Duct Insulation
Unconditioned attics in Shady Hollow reach 140°F in July and August. If your duct insulation has compressed, torn, or simply aged out, you’re paying to cool that attic before any air reaches your living room. We reinsulate with foil-faced fiberglass wrap or replace with pre-insulated duct where appropriate. Insulation work runs $280-$520 for typical Shady Hollow homes, and we always camera-inspect before and after so you see the difference.
Mastic Sealant Application
The original mastic on Shady Hollow’s duct board systems has had 30-40 years of thermal cycling. It cracks. It flakes. And every crack is conditioned air escaping into your attic. We remove failed sealant where accessible and apply fresh, fiber-reinforced mastic to all joints, plenum connections, and register boots. This is detailed, slow work - we don’t rush it. Mastic reapplication as a standalone service runs $320-$550 in Shady Hollow, though it’s often bundled with sealing or repair work.
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 Shady Hollow
We carry parts and materials from Rotobrush, Nikro, and Honeywell on every truck serving the Shady Hollow area, which means most repairs don’t require a second trip. Rotobrush and Nikro supply our agitation and vacuum equipment for pre- and post-repair cleaning. Honeywell provides the media filters and whole-home air quality components we recommend when duct repair reveals systemic contamination. We don’t stock cheap generic materials that might last a season or two in a Texas attic. The parts we use are the same ones serious HVAC contractors specify for their own homes.
Common Duct Repair & Sealing Problems We See in Shady Hollow Homes
- Builder-grade flex duct sags and separates at joints within 10-15 years. In Shady Hollow’s 1980s and 1990s homes, we’ve found original duct runs that have pulled completely free at the plenum, dumping conditioned air directly into the attic. The homeowner notices weak airflow and high bills; we find a disconnected duct behind the drywall.
- Fiberglass duct board liners from the 1980s erode and shed particles. This is especially common in Shady Hollow because the two-season pollen load - cedar in winter, oak in spring - forces HVAC systems to run harder and longer, accelerating liner degradation. Those particles contaminate supply air and clog coils and blower motors.
- Mastic sealant on original ducts fails after decades of thermal cycling. Austin’s subtropical heat means attics swing from 40°F winter mornings to 140°F summer afternoons. That expansion and contraction cracks mastic wide open. Multiple small leaks add up to major efficiency loss.
- Return-air intakes clogged with organic debris from Shady Hollow’s live oak canopy. The dense canopy that gives this community its name deposits pollen, leaves, and decaying matter directly around ground-level returns. We routinely pull compacted material from return plenums that looks more like mulch than household dust - a pattern far less common in newer, tree-sparse subdivisions a few miles north.
Pricing for Duct Repair & Sealing in Shady Hollow, TX
| Service | Typical Range in Shady Hollow |
|---|---|
| Single flex duct repair/replacement | $180 - $340 |
| Metal duct repair (seam/joint) | $220 - $480 |
| Mastic sealant reapplication | $320 - $550 |
| Whole-system duct sealing | $450 - $650 |
| Duct insulation replacement | $280 - $520 |
| Combination repair + sealing package | $580 - $890 |
These are honest ranges for the Shady Hollow market, based on accessibility, attic conditions, and extent of damage. We don’t bait you with a low phone quote and change the price at the door. Our technician inspects with a camera, shows you what they found, and presents upfront pricing before any work begins. Estimates are free. We also honor our standing offers: $50 off any repair over $250, free second opinion on any written estimate, and a permanent 5% senior and veteran discount.
We recently sealed a leaky flex-duct run in a home on River Hills Drive where the original duct board had disintegrated at the plenum, sending debris into the airstream. Our crew replaced the damaged section with new insulated flex duct and applied mastic sealant to all accessible joints, dramatically improving airflow and indoor air quality.
We Also Serve Cities Near Shady Hollow
Our service area covers Shady Hollow and the surrounding communities - Buda to the south, Austin proper to the north and east, Kyle further down I-35, and Bee Cave to the west. If you’re in a neighboring community and your home shares the same vintage of construction and ductwork issues, we apply the same thorough approach and the same upfront pricing.
Serving Shady Hollow, TX - Our Local Coverage Area
We’re based in the Shady Hollow 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 Shady Hollow
Look for weak airflow from vents, rooms that won’t maintain temperature, dust buildup around registers, or energy bills that have risen without explanation. In Shady Hollow’s 1980s-90s homes, these symptoms almost always trace back to sagging, separated, or deteriorating flex duct. Call (866) 347-2063 for a free camera inspection - we’ll show you exactly what’s happening in your attic.
Yes, proper duct sealing reduces the infiltration of unfiltered air - including Ashe juniper pollen that blows off the Hill Country directly into Shady Hollow during cedar fever season. Sealed ducts mean your HVAC filter actually controls what enters your living space, rather than pulling pollen through gaps in attic ductwork. For homes with allergy-sensitive residents, we often pair sealing with upgraded filtration.
Fiber-reinforced water-based mastic is the correct material for sealing aging duct board - not duct tape, not caulk, not spray foam. Mastic remains flexible through decades of thermal cycling, which matters in Shady Hollow attics that swing from winter cold to 140°F summer heat. Our technicians apply it by brush to all accessible joints and seams, and we verify the seal with pressure testing.
Yes, though metal ductwork is less common in Shady Hollow’s original master-planned homes than flex duct or fiberglass board. We repair corroded seams, separated joints, and damaged sections with proper sheet-metal techniques and sealants. If your home has metal ducts - typically in additions or custom builds - we assess whether repair or sectional replacement is the more durable solution.
In Shady Hollow, absolutely. Unconditioned attics here reach extreme temperatures for six or more months each year, and poorly insulated ducts lose significant cooling capacity before air ever reaches your vents. Reinsulating pays for itself in reduced runtime and improved comfort, especially for upstairs rooms that struggle in summer. We typically recommend insulation work alongside sealing or repair for the full benefit.
Ready to fix your ductwork? Call (866) 347-2063 for a free estimate. We’ll be there when we say, we’ll show you what we find, and we’ll stand behind the work - no paperwork, no arguing, for 90 days.
Written by Wade Kellerman, Owner at Bellows Air Duct & Vent Co. of Texas, serving Shady Hollow since 1984.