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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AfterFast, Reliable Duct Repair & Sealing Across Marietta
Duct repair and sealing in Marietta typically runs $450-$1,800 for most residential systems, with flex-duct replacements starting around $280 per run and full metal-duct restoration on older homes reaching the higher end. We dispatch crews to Marietta from our Atlanta office, and most scheduled jobs are on the calendar within three to five business days. Call (678) 904-9744 for a written estimate before any work starts.
Our Duct Repair & Sealing team knows Marietta’s housing stock intimately. The brick ranches off Powder Springs Road, the split-levels near Whitfield Estates, the 1990s subdivisions around Dobbins Air Reserve Base - we’ve photographed the inside of ductwork in all of them. That matters because duct failure in Marietta doesn’t look like duct failure in a 2015 Kennesaw build. The original galvanized trunk lines installed during the Lockheed plant expansion are now 40-60 years old. The first-generation flex duct from the Reagan-era subdivisions is brittle and sagging. And every attic in Marietta hits 130°F+ in July, which means seals don’t just fail - they cook.
Why CleanRun Air Duct Cleaning Sandy Springs Is Marietta’s Preferred Duct Repair & Sealing Company
We’ve served Marietta homeowners since 2013 under the H.A.V.E.N. Standard, and our documented photo record - interior shots of every duct run, before and after - is included on every visit at no extra charge. Customers in neighborhoods from Whitfield Estates to the corridors near Dobbins Air Reserve Base receive the same deliverable: a written scope, a written price agreed before work begins, and timestamped images they can review on their own time.
Our technicians are background-checked, uniformed, and identified by name before arrival - Haven Standard Clause 3: Verified Crews. The equipment they carry includes Rotobrush and Abatement Technologies systems, brands customers can look up independently before agreeing to a price. Every job is backed by our 365-Day Done Right Promise in writing, not as a verbal assurance.
Scheduling is coordinated from our Atlanta office, but the crews serving Marietta live in the metro and drive the same corridors daily. They know which 1960s ranches have attic access hatches too small for standard equipment, and which post-WWII neighborhoods still run original galvanized that needs camera inspection before any sealing work is quoted.
Our Duct Repair & Sealing Services in Marietta
Duct Sealing
Mastic sealant application and foil-tape reinforcement for plenum joints, boot connections, and trunk-line seams. In Marietta’s climate, previous sealing work often fails within five to seven years as Georgia humidity swings cause tape to peel and mastic to crack. We remove failed material back to bare metal, then reseal with fresh mastic rated for the temperature cycling these attics see. A typical whole-system seal on a Marietta ranch runs $650-$1,200.
Flex Duct Repair
Replacement of crushed, torn, or disconnected flexible duct branches - the insulated tube with a wire coil inside that connects your trunk line to individual rooms. In Marietta’s 130°F+ attics, the inner liner of 1980s and 1990s flex degrades from the inside out. The coil sags. The run collapses or pulls free at the boot. We’ve found bedrooms in Marietta homes receiving nothing but attic air through a gap the size of a softball. Single-run replacement with new insulated flex, properly supported and sealed, typically runs $280-$520 per branch.
Metal Duct Repair
Restoration of galvanized steel trunk lines and plenums - the rectangular or round metal backbone of older Marietta homes. Original 1960s galvanized in neighborhoods near the old Lockheed plant often shows interior rust scale that flakes into supply air. Pitting at condensation points creates holes that pull attic air directly into the system. We assess with camera inspection, then quote either spot repair with metal patches and mastic, or section replacement with new galvanized or insulated flex transition. Metal-duct restoration on a Marietta ranch typically ranges $850-$1,800 depending on linear footage and access.
Duct Insulation
Wrapping or replacing degraded insulation on duct runs in unconditioned attic spaces. In Marietta, the combination of extreme attic heat and winter temperature drops causes fiberglass insulation to compress and lose R-value, while the vapor barrier outer jacket tears and admits moisture. We install new insulation with proper vapor sealing to maintain conditioned-air temperature from air handler to register. Partial insulation refresh runs $400-$900; full system re-insulation on larger homes reaches $1,400-$2,200.
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.
BeforeAfterTrusted Brands We Service in Marietta
Our equipment roster includes Rotobrush rotary brush systems for mechanical agitation inside duct runs, Abatement Technologies negative-pressure extractors for controlled debris removal, and Nikro HEPA-filtered vacuums. We stock common boot sizes, flex diameters, and mastic compounds for Marietta’s predominant housing types - the 6-inch and 8-inch flex branches common in 1990s subdivisions, the 10-inch and 12-inch galvanized transitions found in 1960s ranches. That inventory means most Marietta repairs are completed in a single visit without waiting on parts.
Common Duct Repair & Sealing Problems We See in Marietta Homes
- Original galvanized trunk lines with interior rust scale. The 1950s-1970s ranches and split-levels around the Lockheed plant corridor still run metal ductwork that has never been replaced. Hard-water condensation from the air handler, combined with decades of humidity cycling, causes rust to flake off in sheets. Cleaning these systems without addressing the pitting just re-contaminates the supply air within a season.
- Collapsed first-generation flex branches in 130°F+ attics. The flex duct installed in Marietta’s 1980s and 1990s subdivisions used inner liners that degrade when exposed to sustained attic heat. The wire coil loses tension. The tube collapses or disconnects at the boot. Back bedrooms - the longest runs from the air handler - are usually the first to fail.
- Failed retrofit seals reopening under humidity swings. Previous homeowners or contractors often sealed plenum and boot joints with foil tape or basic mastic. In Marietta’s climate, these materials dry, crack, and peel within five to seven years. The same gaps reopen, pulling attic air - and Georgia’s exceptional pollen loads - straight into the living space.
- Disconnected returns pulling unconditioned attic air. In older Marietta homes with ductwork routed through unconditioned attics, the return-air pathway is often the weakest point. A separated return trunk in a 130°F attic means the system works harder to cool air it already cooled, while drawing fiberglass particulates and mold spores past any filter location.
Pricing for Duct Repair & Sealing in Marietta, GA
We publish ranges because Haven Standard Clause 1 requires a written price before any work starts - not after inspection, not after the truck is loaded. Here is what duct repair and sealing costs in Marietta’s market:
| Service | Typical Range in Marietta |
|---|---|
| Whole-system mastic sealing (ranch/split-level) | $650 - $1,200 |
| Single flex-duct branch replacement | $280 - $520 |
| Multiple flex-branch replacement (3-5 runs) | $780 - $1,400 |
| Metal trunk-line spot repair with patches | $450 - $850 |
| Metal trunk-line section replacement | $850 - $1,800 |
| Partial duct insulation refresh | $400 - $900 |
| Full system re-insulation | $1,400 - $2,200 |
Factors that move a job within these ranges: attic access difficulty (some 1960s Marietta ranches have hatches too small for standard equipment), linear footage of affected duct, and whether camera inspection reveals rust scale that requires section replacement rather than sealing alone. Every estimate is free, written, and delivered before work begins. Bring a competitor’s written quote and we’ll provide a Free Second Opinion under the H.A.V.E.N. Standard.
We Also Serve Cities Near Marietta
Our crews repair and seal ductwork throughout Cobb and Fulton counties, including Marietta and neighboring Smyrna, Kennesaw, Atlanta, and Roswell. The housing stock differs - Kennesaw’s 2000s builds rarely show the galvanized failure modes common in Marietta’s Lockheed-era neighborhoods - and our diagnostics adjust accordingly.
Serving Marietta, GA - Our Local Coverage Area
We’re based in the Marietta 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 Marietta
It depends on what the camera shows. Original galvanized trunk lines in Marietta’s 1960s ranches often have interior rust scale that flakes into supply air; if the metal is pitted through, sealing alone won’t stop re-contamination and section replacement is the sound repair. If the metal is surface-rusted but structurally intact, mechanical brushing followed by mastic sealing of all joints and boots can extend service life another 10-15 years. We photograph the interior and show you before quoting either approach. Call (678) 904-9744 for a free inspection and written estimate.
Back bedrooms are typically the longest duct runs from the air handler, which makes them the first to fail when flex duct collapses or disconnects. In Marietta’s 130°F+ attics, the inner liner of 1980s-1990s flex degrades and the wire coil sags; the run collapses or pulls free at the boot, dumping attic air instead of conditioned air into those rooms. On a brick ranch off Powder Springs Road near Whitfield Estates, our tech ran a camera inspection and found the original galvanized trunk line scaled with interior rust and a collapsed early-generation flex branch feeding two back bedrooms - the register airflow was barely moving. We cut out the crushed branch, rebuilt it in insulated flex, then sealed every boot and plenum joint with mastic before reconnecting the air handler - a process similar to our Marietta Dryer Vent Cleaning service, where thorough sealing prevents hazardous lint buildup. Static pressure dropped and the back rooms finally matched the rest of the house. Call (678) 904-9744 for a free inspection.
The Atlanta metro, including Marietta, regularly posts some of the highest pollen counts in the United States each spring - heavy oak, pine, and sweet-gum loads that infiltrate return-air systems before filters capture them. When duct seals are compromised, pollen accumulates in the ductwork year after year, and every gap in the return path pulls that accumulated debris into the air handler. Homes with failed mastic seals or disconnected returns see indoor particulate levels spike every March through May regardless of filter changes. Sealing the duct envelope is what stops the infiltration; cleaning without sealing is temporary in this climate. Call (678) 904-9744 for a camera inspection and written sealing estimate.
Sealing is worth it if the flex is structurally intact, but 1980s flex in Marietta attics is rarely intact. The inner liner of first-generation flex degrades from sustained 130°F+ exposure; by the time homeowners notice temperature imbalance, the coil has sagged and the liner has torn. We camera-inspect first. If the flex is collapsed or the liner is shredding, replacement is the cost-effective repair - sealing a failed branch just seals the problem in place. If the flex is sound but disconnected at the boot, reconnection with proper support and mastic sealing is typically $280-$520 and solves the issue. Call (678) 904-9744 for a free inspection and written price before any work starts.
Yes - our duct repair and sealing protocols align with NADCA guidelines for assessment, mechanical cleaning where applicable, and post-repair verification. In older Marietta attics with limited access, we adapt the standard to the structure: smaller camera heads for restricted trunk lines, portable negative-pressure extractors where full-size equipment won’t fit, and additional structural support for flex branches in high-heat zones. Every repair is photographed before and after, and the static-pressure change is documented as part of your job record. The 365-Day Done Right Promise applies to all sealing work. Call (678) 904-9744 for a free estimate.
Ready to stop losing conditioned air to your attic? Call (678) 904-9744 for a free written estimate on duct repair and sealing in Marietta. We’ll camera-inspect your system, show you what we find, and deliver a fixed price before any work begins - Haven Standard Clause 1, every time.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Marietta since 2013.