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 costs $280-$750 for most residential jobs, with full trunk-line restoration on older homes running $900-$1,800; we also offer Marietta Dryer Vent Cleaning for comprehensive home airflow safety. Our crews serve Marietta from our Atlanta coordination office, and we carry the equipment to reconcile two generations of duct materials in the same attic - the reality in most Lockheed-era neighborhoods. Call (470) 326-1926 and we’ll put a written price in front of you before any panel comes off.
We’ve worked the corridors off Canton Road, Sandy Plains Road, and the Dobbins ARB area long enough to know what the camera finds in Marietta’s 1960s-1980s housing stock. These aren’t hypothetical systems. They’re original fiberglass ductboard trunks, now 40-60 years old, with 1990s flex branches taped on later by owners or handymen who didn’t own mastic. The tape dries. The joint opens. The system pulls 140-150°F attic air and oak pollen straight into your living space. That’s the repair profile we see in Marietta, and it’s different from what newer-built neighboring cities present.
Why CleanRun Air Duct Cleaning Johns Creek Is Marietta’s Preferred Duct Repair & Sealing Company
CleanRun has served metro Atlanta since 2013, with 52,000+ homes documented under our Duct Repair & Sealing program. Every one of those jobs started with a written price and ended with a photo record of every duct run - before and after. In Marietta specifically, our reputation rests on what we can show homeowners: the camera image of a dried-tape takeoff pulling attic air, the photo of glass fibers shedding from a degraded ductboard liner, the written scope signed before work began.
Our technicians are background-checked, uniformed, and identified by name before arrival - Haven Standard Clause 3: Verified Crews. Scheduling and dispatch for Marietta jobs are coordinated from our Atlanta office, with crews carrying Rotobrush inspection systems and Abatement Technologies sealing equipment on every truck. We don’t quote over the phone and hope for the best. We inspect, photograph, and write the price down. Then you decide.
The 365-Day Done Right Promise applies to every Marietta job in writing, not as a verbal assurance. If the work isn’t right, we make it right. And our Free Second Opinion on Any Written Estimate means you can bring a competitor’s Marietta quote and we’ll put our number beside it - no charge, no obligation.
Our Duct Repair & Sealing Services in Marietta
Duct Sealing with Mastic Sealant
Mastic sealant is the only permanent fix for the dried-tape failures we find in Marietta’s two-phase duct systems. We apply Abatement Technologies-rated mastic with reinforcing mesh at every takeoff, joint, and seam, then verify the seal under negative-pressure extraction - that means we pull a vacuum on the system and measure whether air is still entering from the attic. In Marietta’s 1970s ranch homes off Canton Road, this step alone often drops the system’s attic air infiltration to zero. A typical mastic sealing job on a Marietta split-level runs $340-$620.
Flex Duct Repair
Flex duct in Marietta was often installed in the 1990s by taping onto 1970s ductboard trunks. That tape has a 20-25 year lifespan in Georgia’s attic heat. We remove the failed connection, install a proper takeoff collar, and re-secure the flex with mastic and mesh - not new tape that will dry out again. Our crews carry Guardsman flex duct in standard diameters so Marietta homeowners aren’t waiting on parts. A single flex branch replacement with proper takeoff restoration runs $280-$450.
Metal Duct Repair
Some Marietta homes - particularly colonial-style builds from the late 1970s and early 1980s - used galvanized metal trunk lines with later flex additions. Metal fatigue at seams, rust-through from condensation, and separated slip joints are common after 40+ years. We cut out degraded sections, fabricate replacements on-site, and seal with mastic rather than foil tape for permanence. Metal duct repair in Marietta typically runs $380-$680 depending on accessibility and linear footage.
Duct Insulation
Unconditioned Marietta attics destroy duct insulation. Original R-4 or R-6 flex wrap crumbles; ductboard outer liners delaminate. We sleeve degraded trunks with new insulation rated for 150°F attic exposure, sealed at every seam. For Marietta homeowners whose rooms won’t hold temperature, this is often the missing piece after sealing is complete. Duct insulation work on a typical Marietta ranch runs $420-$780.
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 trucks stock Aprilaire filtration components, Abatement Technologies sealing supplies, and Rotobrush inspection systems - equipment you can look up independently before agreeing to any price. We don’t use hardware-store vacuums and call it duct work. For Marietta’s older homes with degraded ductboard and failed tape joints, the right equipment means the difference between a documented repair and a temporary patch. Parts availability is local; turnaround on standard flex duct, mastic, and insulation sleeve is same-visit.
Common Duct Repair & Sealing Problems We See in Marietta Homes
- Dried-and-separated tape at 1990s flex-to-1970s-ductboard takeoffs. The tape joints between original trunks and later branches have dried and let go, pulling 140-150°F unconditioned attic air and spring pollen into the system before any air reaches your registers. No duct cleaning fixes an open joint - this is a sealing job under NADCA source-removal standards.
- Glass fiber shedding from degraded ductboard trunk liners. After 40-60 years in Georgia’s humidity and heat, the inner liner of Marietta’s original fiberglass ductboard begins releasing fibers into the airstream. Invisible without camera inspection. No cleaning removes it - the trunk section must be sleeved or replaced.
- Persistent moisture infiltration in attic-mounted ductwork. Marietta’s humid subtropical climate creates condensation inside unsealed older runs, making mold colonization a common finding rather than an edge case. Surface wiping doesn’t reach the interior growth; the affected section needs removal or encapsulation under containment.
- Crushed or kinked flex branches from attic storage or pest activity. Marietta’s mature tree canopy and older rooflines invite squirrels and raccoons into attics. We regularly find flex duct flattened by storage boards or chewed at branch ends, creating pressure drops that starve distant rooms.
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 we’ve opened your system. Here is what duct repair and sealing costs in Marietta’s market:
| Service | Typical Range in Marietta |
|---|---|
| Mastic sealing of accessible joints and takeoffs | $280-$450 |
| Single flex duct branch replacement with proper takeoff | $280-$450 |
| Ductboard trunk sleeving and reinsulation (per 8-10 ft section) | $380-$620 |
| Full system sealing with negative-pressure verification | $620-$920 |
| Metal duct section replacement with fabrication | $380-$680 |
| Complete trunk-line restoration (degraded ductboard) | $900-$1,800 |
What moves the number: attic accessibility (truss spacing, decking), linear footage of degraded material, whether the system needs partial or full disassembly to reach the failure, and whether mold remediation is required before sealing can begin. Every Marietta estimate includes the Documented Photo Record - inside every run, before and after - delivered as part of the standard job record. Call (470) 326-1926 for an exact quote; estimates are free.
We Also Serve Cities Near Marietta
Our crews work throughout Cobb and north Fulton counties, including Marietta neighbors: Smyrna to the south, Woodstock to the north, Roswell to the east, and Holly Springs to the northwest. The same written-price protocol, same equipment roster, same photo documentation applies to every job.
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
You won’t know without a camera inspection inside the trunk; the fibers are invisible at the register. Our Rotobrush inspection system photographs the interior liner condition - if it’s powdering or showing exposed glass mat, the trunk needs sleeving or replacement, not cleaning. Call (470) 326-1926 and we’ll show you what the camera sees before quoting any work.
Marietta’s Lockheed-era build-out created thousands of ranch and split-level homes with fiberglass ductboard trunks in the 1960s-1980s. When central air became standard in the 1990s, contractors and homeowners often added flex branches directly onto those existing trunks with foil tape - the cheapest, fastest method. That tape has a 20-25 year lifespan in Georgia attic heat, and most of it has now failed. The repair is removing the tape, installing proper takeoff collars, and sealing with mastic.
Yes - metro Atlanta ranks among the worst U.S. cities for spring tree pollen, and Marietta’s older homes with open duct joints pull that pollen directly from the attic. A sealed system with intact filtration controls what enters your living space; an unsealed system with dried tape joints bypasses the filter entirely. The urgency isn’t theoretical - we photograph pollen accumulation inside open takeoffs every March and April.
No. A room that won’t hold temperature is almost always a pressure or leakage problem, not a cleanliness problem. On a split-level off Sandy Plains Road, our tech found a 1990s flex branch taped to a 1970s ductboard trunk where the tape had dried and separated - the return was pulling 140°F attic air straight into the system. The room wasn’t dusty; it was starved of conditioned air. We sealed the takeoff under negative pressure, and the temperature balanced. NADCA standards classify that as source-removal and sealing, not cleaning.
We photograph the extent, contain the affected section under negative pressure, and remove or encapsulate based on the substrate. Ductboard with interior mold growth is typically replaced - the porous material can’t be reliably cleaned to source-removal standards. Metal duct can often be cleaned and sealed. Every Marietta mold finding is documented in the photo record with scope written before work begins. Call (470) 326-1926 to schedule inspection.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Marietta since 2013.