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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Before
AfterFast, Reliable Duct Repair & Sealing Across Roswell
Duct repair and sealing in Roswell typically runs $340-$890 for most residential jobs, with flex duct replacement in steep-pitched 1990s attics landing at the higher end and straightforward mastic sealing at the lower. Ask about bundling with our Roswell Dryer Vent Cleaning for a complete system refresh. We’re usually on-site within a day or two of your call, scheduling from our Atlanta office but dispatching crews who work Roswell exclusively enough to know the difference between a Horseshoe Bend split-level and a hillside build off Holcomb Bridge Road. Call (678) 679-7540 and we’ll put a written price in front of you before a single panel comes off.
Why CleanRun Air Duct Cleaning Alpharetta Is Roswell’s Preferred Duct Repair & Sealing Company
We’ve been documenting the inside of every duct run we touch since 2013. That practice started with our first job and hasn’t changed: a photo record delivered to you, before and after, as a standard deliverable on every visit. In Roswell specifically, that documentation matters more than in most markets because of what we regularly find. The city’s late-1980s through mid-1990s building boom left thousands of homes with original flexible ductwork now pushing 30-40 years, and the Chattahoochee River corridor humidity loads that aging liner in ways a camera makes unmistakable.
Our crews serving Roswell are background-checked and uniformed under Haven Standard Clause 3: Verified Crews. Tomas Reyes, who leads CleanRun, requires every technician to be identified by name before arrival. No exceptions. The 365-Day Done Right Promise backs every job in writing, not as a policy subject to manager approval but as a written guarantee delivered with your invoice.
We don’t do “call for a quote.” Haven Standard Clause 1 means a written price before any work starts, every time. Bring a competitor’s written estimate and we’ll deliver a free second opinion, our number next to theirs, no obligation.
Our Duct Repair & Sealing Services in Roswell
Duct Sealing
Most Roswell homes we inspect have supply and return leaks at the plenum collar and boot joints, not just at the registers where amateur repairs stop. Our sealing protocol runs mastic sealant at every mechanical joint and tests the system under negative pressure to verify closure. In the river-bottom subdivisions west of Willeo Road, where AC runtime stretches from April through October, that thoroughness matters. Humid outside air pulled through incomplete seals condenses inside aged flex liner and feeds microbial growth that returns within a season if the job is done halfway.
Flex Duct Repair
Roswell’s dominant housing stock, those large 1990s subdivisions along the GA-400 corridor and north of Holcomb Bridge Road, was built with long flex-duct runs strapped across open attic joist bays without proper support. The result is predictable: sag points at every low spot, collapsed inner liner, and standing debris pockets that restrict airflow and accelerate condensation. We replace degraded runs with properly supported new flex duct, photograph every connection, and deliver the record to you as part of the standard job documentation.
Metal Duct Repair
Older Roswell homes, particularly pre-1990 builds near the historic district and some of the earlier Horseshoe Bend properties, still have galvanized steel trunk lines. We repair separated seams, replace corroded sections, and seal with mastic rather than foil tape, which degrades in Georgia’s attic temperature swings. The work is photographed before and after, and the written scope specifies every section addressed.
Duct Insulation
Unconditioned attic spaces in Roswell’s steep-pitched hillside homes, especially north of Holcomb Bridge Road, expose ductwork to temperature extremes that sweat through inadequate insulation. We install fresh insulation jacket on repaired or replaced runs, with vapor barrier orientation specified for our humid climate. The Chattahoochee River bottomlands keep localized humidity elevated above Atlanta proper, so this isn’t a cosmetic upgrade. It’s a condensation control measure.
Mastic Sealant Application
We specify mastic sealant, not foil tape or duct tape, at every joint we touch. Mastic remains flexible through Georgia’s attic heat cycles and creates a mechanical bond that tape can’t match. On a recent job off Willeo Road, we found a previous repairer’s tape job completely detached at the plenum collar, leaking conditioned air into the attic for what the homeowner estimated was two cooling seasons. We stripped the old tape, applied mastic, and tested the seal under pressure.
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.
Before
AfterTrusted Brands We Service in Roswell
Our equipment roster includes Rotobrush agitation systems, Nikro negative-pressure extractors, and Honeywell media filters for post-repair air handler protection. We stock Aprilaire and Abatement Technologies components for common Roswell systems, which means replacement parts don’t add days to your job. We also service Trane in Roswell with compatible components on hand. Every brand we name can be verified independently, and we specify what’s being used in your written scope before work begins.
Common Duct Repair & Sealing Problems We See in Roswell Homes
- Sagging flex duct across attic joists. In Roswell’s 1990s steep-pitch subdivisions, long unsupported runs collapse at the low points and create standing debris pockets. Simple tape-and-go repairs miss the structural problem entirely.
- Humidity-driven condensation inside aged liner. The Chattahoochee River bottomlands keep Roswell’s localized humidity elevated, and April-through-October AC runtime pulls that moisture through leaky joints. Without sealing at the air handler and plenum, microbial growth returns within one season.
- Separated inner liner at plenum collars. Thirty years of thermal cycling degrades the adhesive bond between flex duct inner liner and metal collar. We find this almost weekly in original 1990s Roswell ductwork.
- Shared dryer vent stack restriction in condos. Roswell’s denser apartment and condo buildings route dryer vents through common vertical stacks. A lint pathway restricted to one unit backs up the whole stack, so single-unit cleaning doesn’t eliminate the fire risk.
Pricing for Duct Repair & Sealing in Roswell, GA
A typical mastic sealing job for a Roswell home with 8-12 runs runs $340-$520. Flex duct replacement, common in the 1990s subdivisions with degraded original liner, ranges $180-$340 per run depending on attic access difficulty. Full system replacement in a steep-pitched attic north of Holcomb Bridge Road, where crews work around tight joist bays and limited staging space, can reach $890-$1,400. Metal duct repair, less common but present in older Roswell homes, runs $260-$480 per section.
What moves you within these ranges: attic access difficulty, number of runs, whether the plenum itself needs resealing, and whether we find microbial growth requiring remediation before sealing. We deliver the written price before any work starts, under Haven Standard Clause 1. No exceptions. Call (678) 679-7540 for an exact quote on your system. Estimates are free.
We Also Serve Cities Near Roswell
Our Duct Repair & Sealing crews work throughout north metro Atlanta, including Roswell and neighboring Alpharetta, Woodstock, Marietta, and Holly Springs. Scheduling is coordinated from our Atlanta office, with Roswell jobs routed to technicians who know the local housing stock and access patterns.
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
Because the sag is usually a support problem, not a duct problem. In Roswell’s 1990s steep-pitch subdivisions, builders strapped long flex runs across open joist bays without proper hangers, so gravity and thermal cycling create low points that collect debris and condensation. A repair that only replaces the duct without adding proper support straps or reducing run length will sag again within a season. We address the framing geometry, not just the liner failure. Call (678) 679-7540 and we’ll show you the support plan in writing before we start.
Yes. The river bottomlands along Roswell’s western edge maintain localized humidity 10-15% above Atlanta proper during peak season, and AC systems run April through October. That extended runtime continuously pulls humid outside air through any duct leaks, accelerating condensation on flex-duct liner surfaces and feeding microbial growth. Sealing in Roswell requires more thorough plenum and air-handler joint work than in drier markets, and we test under negative pressure to verify the seal holds against that humidity load.
We can inspect and clean the accessible portions, but shared vertical stacks require building management coordination because the restriction point may be in another unit or the common roof termination. We document what we find with camera inspection, deliver the photo record to you, and provide a written scope for building management if common-area work is needed. Single-unit cleaning without stack verification doesn’t eliminate the fire risk in these Roswell buildings.
We coordinate access in advance, arrive with compact equipment suited to restricted staging areas, and schedule during windows that minimize disruption to neighboring units. Our technicians are identified by name before arrival under Haven Standard Clause 3, and we carry the H.A.V.E.N. Standard documentation for building management review. The written price is delivered before any panel comes off, same as every job.
We typically specify MERV 11-13 media filters from Honeywell or Aprilaire for post-repair air handler protection, depending on system capacity and the homeowner’s sensitivity profile. Higher MERV ratings without verified airflow capacity can strain older Roswell systems. The specific filter is named in your written scope, and we verify fit at the air handler before closing the job. Call (678) 679-7540 for exact recommendations on your system.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Alpharetta, serving Roswell since 2013.