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 Repair & Sealing Across Roswell
Duct repair and sealing in Roswell typically costs $280-$750 for most residential jobs, with full flex-duct replacement on large colonials running $1,200-$2,400. We dispatch crews to Roswell from our Atlanta office, and most homeowners in Horseshoe Bend, Willow Springs, and the Holcomb Bridge Road corridor can get a written estimate within 24-48 hours of calling. If your upstairs zone never reaches temperature or your registers push dust six months after a cleaning, the problem is usually in the attic, not the HVAC unit itself. Call (678) 693-5322 and we’ll put a camera in the ductwork before quoting a dollar.
Why CleanRun Air Duct Cleaning Cumming Is Roswell’s Preferred Duct Repair & Sealing Company
We’ve been working in Roswell since 2013, and by now we’ve photographed the inside of ductwork in most of the major subdivisions built during the 1985-2005 boom. The photo record we deliver - before and after every run - lets homeowners see exactly what failed and what we fixed. No manager has to approve your warranty claim. The 365-Day Done Right Promise is written on every invoice, Haven Standard Clause 1.
Our crews know the difference between a Horseshoe Bend colonial with 1990s flex-duct stapled across a 140°F attic and a newer Alpharetta build with metal trunk lines. That local knowledge means we diagnose faster and quote accurately the first time. Tomas Reyes established this standard when he founded CleanRun: written price before work starts, documented photo record when we leave, and a crew you can verify by name before they arrive - Haven Standard Clause 3: Verified Crews.
Our Duct Repair & Sealing Services in Roswell
Duct Sealing with Mastic Sealant
Most Roswell homes we work on have leaky plenum collars, disconnected flex-duct joints, or gaps where the trunk line meets the air handler. We seal these with mastic sealant, a brush-applied compound that remains flexible and airtight for decades - unlike foil tape, which degrades in Roswell’s attic heat. A typical mastic sealing job on a 3,000-4,000 sq ft Roswell colonial runs $280-$450. We photograph every sealed joint before closing the attic hatch.
Flex Duct Repair
The builder-standard flex duct in Roswell’s 1985-2005 homes was never designed to survive 20-40 years in 140°F attics. The inner liner sags, tears, or pulls completely off the collar, dumping conditioned air into the attic and pulling attic air into your living space. In subdivisions like Willow Springs off Holcomb Bridge Road, we regularly find original 1990s flex-duct trunks detached from the plenum and sagging across joists. Flex duct repair in Roswell typically runs $180-$340 per run, with full replacement of a compromised trunk at $650-$1,100. We use Guardsman and Rotobrush equipment for source removal and reinstallation.
Metal Duct Repair
Some Roswell homes - especially custom builds near the Chattahoochee River corridor - have galvanized metal trunk lines that have separated at seams or corroded at joints. We repair these with metal screws, mastic, and reinforcement strapping. Metal duct repair in Roswell generally falls between $320-$580. Where rust or corrosion is advanced, we’ll show you the photo and quote replacement before cutting anything.
Duct Insulation
Unconditioned Roswell attics destroy duct insulation. The original R-6 or R-8 wrap on flex-duct runs becomes brittle, compresses, or falls away entirely, leaving the duct exposed to 140°F summer heat and winter temperature swings. Re-insulating a compromised run with fresh R-8 wrap and vapor barrier typically costs $220-$380 per run in Roswell. On large homes with extensive attic ductwork, full re-insulation of the system runs $1,200-$2,400. The payoff is immediate: registers hit target temperature instead of bleeding thermal energy into the attic.
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.
BeforeAfterTrusted Brands We Service in Roswell
Our equipment roster includes Rotobrush agitation systems, Nikro negative-pressure extractors, and Honeywell air-quality monitors - brands any homeowner can research independently. We stock mastic sealant, flex-duct connectors, and insulation wrap sized for the large-format systems common in Roswell’s 3,000-5,000 sq ft homes, so most repairs don’t wait on parts. Every tool is listed on your written scope before work begins.
Common Duct Repair & Sealing Problems We See in Roswell Homes
- Flex-duct inner liners torn by decades in 140°F attics. The plastic liner inside Roswell’s original builder-grade flex duct becomes brittle after 20+ summers. It sags, tears, or collapses entirely, blocking airflow to far-end registers and forcing the HVAC to run continuously.
- Plenum collar disconnections pulling attic air into living spaces. In Horseshoe Bend and Willow Springs, we regularly find flex-duct trunks that have pulled completely off the air handler plenum. The system has been circulating unconditioned, pollen-laden attic air - sometimes for years - before reduced airflow finally alerts the homeowner.
- Mold colonization from Chattahoochee-corridor humidity spikes. Roswell’s proximity to the river bottomland creates localized humidity that infiltrates attic duct systems through bypasses. Return plenums and flex-duct interiors grow mold where humid unconditioned air meets cool conditioned surfaces.
- Crushed or kinked flex-duct runs from foot traffic or storage. Roswell’s large attics often become storage spaces. A box or board laid across a flex-duct run compresses the duct, permanently reducing airflow to the zone it serves. The camera finds these in minutes; the homeowner finds them when the upstairs never cools.
Pricing for Duct Repair & Sealing in Roswell, GA
| Service | Typical Range in Roswell |
|---|---|
| Mastic sealing (plenum collars, joints) | $280-$450 |
| Flex duct repair (per run) | $180-$340 |
| Flex duct replacement (trunk line) | $650-$1,100 |
| Metal duct repair (seams, joints) | $320-$580 |
| Duct re-insulation (per run, R-8 wrap) | $220-$380 |
| Full system re-insulation (large colonial) | $1,200-$2,400 |
These are whole-system prices, not per-vent teaser rates. Every quote is written and agreed before work starts - Haven Standard Clause 1. What moves the number: accessibility of the attic, extent of liner damage, whether mold remediation is required before sealing, and whether the home has one zone or five. We deliver the written price on site; you approve it or we leave. No charge for the estimate. Call (678) 693-5322 for a specific number on your home.
We Also Serve Cities Near Roswell
Our crews work throughout North Fulton and surrounding counties, including Roswell, Alpharetta, Holly Springs, Duluth, and Canton. Dispatch and scheduling are coordinated from our Atlanta office. If you’re in a neighboring city and found this page, the same pricing structure and documentation standards apply.
Serving Roswell, GA - Our Local Coverage Area
We’re based in the Roswell 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 Roswell
It’s usually a duct problem, not the HVAC unit. In Roswell’s 1985-2005 colonials, the upstairs zone is fed by the longest flex-duct runs through the hottest part of the attic. The inner liner sags, tears, or pulls off the collar, starving the zone while the thermostat downstairs reads normal. We camera-inspect the attic ductwork and show you the failure point before quoting repair. Call (678) 693-5322 for an exact diagnosis - estimates are free.
We run a camera through every accessible duct run and photograph the interior. A disconnected flex-duct trunk is visible at the plenum collar - no drywall removal, no exploratory cuts. The photo record is included in your job documentation. In a 4,200 sq ft Willow Springs colonial off Holcomb Bridge Road, our tech camera-inspected the attic and found the original 1998 flex-duct trunk had detached from the air handler plenum collar, sagging across the joists and dumping conditioned air straight into a 140°F attic. After source removal with agitation tools under negative pressure and HEPA filtration, we mastic-sealed the collar and re-insulated the run - the homeowner’s second-floor registers finally hit target temperature.
Yes, particularly in return plenums and flex-duct interiors where attic bypasses let humid unconditioned air infiltrate. Roswell’s position adjacent to the Chattahoochee River bottomland creates localized humidity spikes that exceed what you’d see in flatter, less wooded suburbs. We find mold colonization in roughly one-third of the older Roswell homes we inspect. The fix is source removal, sealing the bypass, and re-insulating - not spraying chemical cover-up. Call (678) 693-5322 if you smell mustiness from your registers.
We access the attic, camera-inspect every run, then seal plenum collars, trunk joints, and register boots with mastic sealant. On Roswell’s builder-grade flex-duct systems, we also replace failed support straps, repair crushed runs, and re-insulate where the original wrap has degraded. The work typically takes 3-5 hours for a 3,000-4,000 sq ft home. You receive before-and-after photos of every run and a written scope of what was sealed. Call (678) 693-5322 for a written quote on your specific system.
No, it’s not normal - it’s a sign of ongoing infiltration. In Roswell’s 20-40-year-old flex-duct systems, a cleaning without sealing the leaks is temporary. The disconnected collar, torn liner, or unsealed plenum continues pulling attic air (and attic dust, pollen, and insulation particles) into the ductwork. The real fix is sealing the failure points, not cleaning more often. Our Duct Repair & Sealing team documents the infiltration source and seals it - then the cleaning lasts. Call (678) 693-5322 for a camera inspection.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Roswell since 2013.