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 Norcross
Most Norcross homes built between 1978 and 1995 still run the original builder-grade flex duct that came with the house - fiberglass-lined runs that sag, kink, and separate at the plenum after thirty-plus years of Georgia humidity and pollen loading. Our Duct Repair & Sealing crews work these subdivisions weekly, from Spalding and Northwoods to the streets near the historic Mill District, and we know what to look for before we pull the first attic panel. We dispatch from our Atlanta office and carry the full equipment roster - Rotobrush, Abatement Technologies, and Guardsman-grade tools - so we can seal, repair, or replace on the same visit. Call (678) 904-9744 and we’ll put a written price in front of you before any work starts.
Why CleanRun Air Duct Cleaning Sandy Springs Is Norcross’s Preferred Duct Repair & Sealing Company
We’ve been serving Norcross since 2013, and the pattern hasn’t changed: a homeowner notices one room won’t hold temperature, or the power bill spikes for no clear reason, and our camera inspection finds the same predictable failures in the original ductwork. Every job we complete in Norcross includes a Documented Photo Record - inside every duct run, before and after - delivered as part of the standard job record. Not a marketing promise. A deliverable you can scroll through on your phone.
Our technicians are background-checked, uniformed, and identified by name before arrival, operating under Haven Standard Clause 3: Verified Crews. The 365-Day Done Right Promise applies to every Norcross job in writing, not as a verbal assurance that disappears with the crew. And our Free Second Opinion policy means you can bring us any competitor’s written estimate; we’ll put our number next to it, line-itemed, at no cost.
We don’t do urgency theatre. We don’t do $79 coupons that become $800 invoices once the van is in your driveway. What we do is show up, photograph what we find, and give you a written price before a single panel comes off. That’s Haven Standard Clause 1, and it’s how we’ve served over 52,000 homes.
Our Duct Repair & Sealing Services in Norcross
Duct Sealing
Sealing is the most cost-effective airflow recovery we perform in Norcross, especially in the 1980s colonials and ranches where duct-board plenum connections have worked loose over decades of thermal cycling. We use mastic sealant - a brush-applied, fiber-reinforced compound that outlasts tape - at every joint, seam, and penetration. In Norcross’s humid subtropical climate, unsealed leaks do more than waste money. They pull hot attic air and red-clay dust into the system, and they create pressure differentials that draw moisture onto uninsulated duct surfaces. A typical whole-system sealing in Norcross runs $450-$780, depending on access and the number of plenum connections.
Flex Duct Repair
The original flex duct in Norcross subdivisions like Northwoods and Spalding was rated for roughly 25 years. Most of it is now 30 to 40 years old. We find collapsed runs, kinks at sharp bends, and separations where the inner liner has pulled away from the metal collar. Our repair protocol replaces damaged sections with new, insulated flex duct sized to the original CFM load, secured with tension straps and sealed with mastic at every connection. Where the full run has failed, we quote replacement by the linear foot - typically $280-$520 per run in Norcross attics, with written pricing before work begins.
Metal Duct Repair
Some Norcross homes, particularly earlier builds near the historic downtown core, use galvanized sheet-metal trunk lines with flex branch takeoffs. Metal ducts don’t collapse, but they corrode at seams, separate at drive-cleat joints, and transmit noise. We repair with slip joints and sealed access panels, or we line deteriorating metal with closed-cell insulation where appropriate. Metal repair in Norcross typically falls between $380 and $650 per section, depending on accessibility and the extent of corrosion.
Duct Insulation
Uninsulated or degraded duct insulation is a hidden problem in Norcross’s shoulder seasons, when attic temperatures swing and condensation forms on cool supply lines. We re-wrap with formaldehyde-free fiberglass insulation or install closed-cell foam sleeves at vulnerable points, particularly on flex runs passing through unconditioned attic space. Proper insulation prevents the mold and mildew growth we document so often in Norcross’s older subdivisions. Expect $320-$580 for targeted insulation recovery on a typical Norcross system.
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 Norcross
Our trucks carry professional-grade equipment from trade-recognized brands: Rotobrush for mechanical agitation and contact cleaning, Abatement Technologies for negative-pressure containment, and Guardsman-grade sealants and adhesives. We also stock Aprilaire media filters and Honeywell zone dampers for Norcross homeowners who want to address airflow imbalance at the source. These aren’t proprietary tools you have to take our word for - look them up, verify the specs, and ask our technician to show you what’s being used before any work starts. We carry common repair components on every truck, so most Norcross jobs don’t wait on parts.
Common Duct Repair & Sealing Problems We See in Norcross Homes
- Collapsed flex runs in 1980s-1990s subdivisions. The original fiberglass-lined flex duct in Norcross’s ranch and colonial stock sags between joists, kinks at elbows, and eventually collapses entirely - cutting airflow to back bedrooms and forcing the blower motor to overwork. We find this in Spalding, Northwoods, and near the Mill District on most service calls.
- Separated duct-board plenum connections. The plenum - the distribution box at your air handler - was originally joined to flex runs with tape or minimal mechanical fasteners. After thirty-plus Georgia summers, those connections fail, dumping conditioned air into humid attics and pulling in unfiltered attic air through return leaks.
- Construction debris in new Norcross builds. Even homes built in the last few years often have drywall dust, wood chips, and insulation scraps left in ducts at handover. The builder’s rough cleaning rarely removes material from deep in the branch runs, and that debris gets pulled straight into the air handler and distributed through every register.
- Condensation on uninsulated sections. Norcross’s high humidity and long cooling season create persistent condensation on uninsulated or degraded duct insulation, particularly in attic and crawlspace runs. The moisture promotes mold growth and eventually degrades the duct liner from the outside in.
Pricing for Duct Repair & Sealing in Norcross, GA
We quote every job with a written price before work begins - Haven Standard Clause 1 - and we never charge per vent or add trip fees after arrival.
| Service | Typical Range in Norcross |
|---|---|
| Duct sealing (whole system, mastic) | $450 - $780 |
| Flex duct repair (per run) | $280 - $520 |
| Metal duct repair (per section) | $380 - $650 |
| Duct insulation recovery | $320 - $580 |
| Plenum reconnection / rebuild | $340 - $620 |
What moves the price: attic accessibility, the number of connections requiring sealant, whether we can reach the failure from existing access panels or need to create new ones, and whether the repair reveals additional damage once we open the system. We photograph everything and show you before we proceed beyond the original scope. Free estimates are available at (678) 904-9744 - we’ll put a written number in your hand, not a verbal range that shifts.
We Also Serve Cities Near Norcross
Our crews work throughout Gwinnett and north Fulton counties, including Duct Repair & Sealing in Norcross and the surrounding communities of Lawrenceville, Suwanee, Duluth, and Alpharetta. The same written pricing, documented photo record, and 365-Day Done Right Promise apply in every service area.
Serving Norcross, GA - Our Local Coverage Area
We’re based in the Norcross 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 Norcross
New construction ducts in Norcross frequently contain drywall dust, wood debris, and insulation scraps left by trades during build-out; the builder’s rough cleaning rarely reaches past the first few feet of branch runs, and that material gets pulled into your air handler and distributed through every register. We recommend a post-construction inspection and targeted cleaning within the first year of occupancy, with sealing at any joints that were never properly mastic-sealed during original installation. Call (678) 904-9744 for a written estimate - we’ll photograph what we find before quoting any work.
No, but it’s common: the original builder-grade flex duct in Norcross’s 1978-1995 subdivisions was rated for roughly 25 years, and most has now spent 30 to 40 years sagging between joists, kinking at bends, and separating at connections. Collapsed flex is not a cosmetic issue - it restricts airflow, overworks your blower motor, and can cause the compressor to short-cycle. We replace failed sections with new, properly supported flex duct sized to the original CFM load. A typical repair runs $280-$520 per run, with written pricing before we start.
Yes - from February through April, oak and pine pollen visibly coats outdoor surfaces in Norcross and gets drawn into return-air grilles in volumes that overwhelm standard filters. That pollen load accelerates debris accumulation inside ductwork, but more importantly, it masks underlying airflow problems: a system that’s already struggling due to collapsed flex or leaky plenum connections will fail completely under pollen-season load. Sealing and repairing the duct system before peak pollen season prevents the compounded failure we document every spring. Call (678) 904-9744 to schedule an inspection.
Yes - in the 20-30% range for most Norcross homes with unsealed plenum connections and attic leaks, based on the documented recovery we photograph after mastic sealing. Leaky ducts force your system to run longer to hit setpoint, and in Norcross’s nearly year-round cooling climate, those extra runtime hours add up fast. A typical whole-system sealing at $450-$780 often pays back within two cooling seasons. We’ll show you the before-and-after pressure test results in writing.
Most jobs in Norcross’s 1980s-1990s subdivisions take four to six hours for a full sealing and targeted flex repair, assuming standard attic access. Homes with multiple failed runs, deteriorated insulation, or limited access panels may extend to a full day. We don’t quote time - we quote scope, with a written price for the complete job. The crew photographs every run before and after, delivers the photo record as a standard deliverable, and leaves only when the pressure test and airflow balance confirm the repair. Call (678) 904-9744 to book a free estimate.
Ready to see what’s actually inside your ductwork? Call CleanRun Air Duct Cleaning Sandy Springs at (678) 904-9744. We’ll answer with a live person, schedule your free estimate, and put a written price in front of you before any panel comes off. Every job includes a Documented Photo Record and is backed by our 365-Day Done Right Promise - in writing, not as a verbal afterthought.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Sandy Springs, serving Norcross since 2013.