Duct Sealing in Roswell - Leakage Measured, Then Priced in Writing

Fast, Reliable Duct Sealing Across Roswell

Duct sealing in Roswell means finding and closing every leak in your forced-air system so the air you paid to heat or cool actually reaches the rooms where your family lives. Most Roswell homes lose 20 to 30 percent of conditioned air through leaks in the ductwork before it ever hits a register. That’s money leaking into your attic or crawl space every time the system cycles on. Our crews work throughout Roswell, from the river valley east of GA 400 to the cul-de-sacs off Crabapple Road. We bring the equipment, the training, and the written price. Call (229) 489-7780 and we’ll schedule a technician to assess your system.

Call (229) 489-7780

Why Hollis Air Duct Sandy Springs Is Roswell’s Preferred Duct Sealing Company

We’ve been sealing ductwork long enough to know that Roswell’s housing stock doesn’t forgive shortcuts. The 1970s ranchers off Hardscrabble Road have different failure points than the 1990s two-stories near East Cobb, and the newer construction closer to the river has its own humidity-driven problems. Our technicians carry professional-grade equipment from Rotobrush and Nikro, not hardware-store gear, and every job begins with a written price before any work starts. That price does not move once we’re inside your home.

Roy Castellanos leads our team, and the standard he set is simple: arrive inside the quoted window, write the price down first, do the job by the book, and leave the site cleaner than we found it. Roswell homeowners tell us the same thing over and over: they’ve had crews show up late, quote one number on the phone and another in person, and disappear when the work failed. Our 365-Day Done Right Promise backs every seal we apply. If something fails within a year, we return and make it right at no charge, including a free second visit. That’s not a handshake. It’s written on every invoice.

HVAC Duct Sealing in Roswell

HVAC Duct Sealing in Roswell is the process of locating air leaks in supply and return ductwork and closing them with materials that stay sealed. A typical whole-system duct sealing job in Roswell runs $850 to $2,400 depending on the home’s size, duct layout, and how many leaks we find. Homes with attic flex duct, common in the 1980s subdivisions near Holcomb Bridge Road, tend to fall on the higher end because deteriorated duct often needs repair before sealing can bond.

Two-Part Sealing: Source Removal First

Roswell’s tree canopy changes how duct sealing has to be done. Mature oak and pine trees across neighborhoods like Martin’s Landing and Horseshoe Bend drop pollen, pine needles, and fine organic dust into the air for months at a time. That debris gets pulled into duct seams and corners, packing into the same gaps we need to seal. You cannot apply mastic to a surface coated in pollen and expect it to hold. We remove the source material first using agitation tools and HEPA filtration, then seal clean metal and flex duct so adhesives bond properly. Skipping that first step is the most common reason sealing fails in Roswell.

Mastic and UL181 Tape for Roswell’s Humidity

The humid air in Roswell attics, especially in the summer months when temperatures push attic spaces past 130 degrees, degrades duct tape quickly. Ordinary cloth-backed tape peels and fails within a season or two. We use HVAC-grade mastic reinforced with UL181 foil tape at joints and seams, which holds up to the heat and moisture cycles that define a Georgia summer. For flex duct that has sagged or pulled apart, we re-support the runs and strap them properly before applying sealant, because sealing a collapsed duct doesn’t fix the gap.

Duct Repair in Roswell

Duct Repair in Roswell addresses failures that go beyond simple leaks: separated joints, crushed flex runs, torn insulation, and return chases that pull attic air into the living space. Repair work in Roswell typically costs $400 to $1,600 depending on what we find during camera inspection, and most repairs can be completed in a single visit. The price is written down before we start, and it includes the repair materials and the sealing needed to make the fix permanent.

Separated Flex Duct in Attics

Roswell’s older homes, particularly the 1970s and 1980s builds off Norcross Street and around Mabry Park, often have flex duct running through unconditioned attics. Humid summers soften the outer jacket, the inner liner sags, and the duct separates at the collar. When that happens, your system is blowing conditioned air directly into the attic. We reconnect the run, secure it with proper strapping, and seal the joint with mastic so it stays connected.

Unsealed Return Chases

Homes with central returns, common in Roswell’s newer upscale builds, sometimes have return chases that were never sealed at construction. The return side pulls hot, humid attic air into the system, which causes condensation on registers and feeds mold growth in the duct interior. Sealing only the visible supply ducts leaves this leak active, and the musty smell returns within weeks. We scope the return path with a camera before we quote, so you know whether the return chase is part of the problem or already sound.

Trusted Brands We Service in Roswell

We work on whatever brand of equipment is already in your Roswell home, and we stock common parts locally so we aren’t running back and forth to a supply house while your family waits. Our crews are trained on equipment from Abatement Technologies and Guardsman, and we use Rotobrush rotary brush systems and Nikro negative-air machines to clean and prepare duct surfaces before sealing. That matters in Roswell because the tree debris that clogs your ducts also prevents sealant from bonding. We explain what we’re using and why, in plain English, before we start.

Common Duct Sealing Problems We See in Roswell Homes

• Flex duct collapses in humid attics. The combination of Georgia summer heat and river-valley humidity breaks down flex duct jackets faster than drier climates. Duct that sags or separates at joints reopens leaks within months unless it’s re-supported during sealing.
• Pollen-packed seams prevent proper bonding. The dense oak and pine canopy in Martin’s Landing and Horseshoe Bend fills duct gaps with organic debris. Sealant applied over that residue will peel away, so source removal has to come first.
• Shared condo dryer vent stacks fail silently. In east Roswell near the Chattahoochee, stacked condo units often share dryer vent chases that collect lint and restrict airflow. The backpressure blows humid air into the chase, which homeowners mistake for a duct leak until camera inspection shows the real blockage.
• Return leaks pull attic air into living spaces. Older Roswell homes with central returns frequently have unsealed return chases drawing hot, humid attic air into the system. The condensation that results causes mold and register staining that no amount of supply-side sealing will fix.

Pricing for Duct Sealing in Roswell, GA

We Also Serve Cities Near Roswell

Beyond Roswell, our Duct Sealing crews work in Holly Springs, Smyrna, Clarkston, and Stone Mountain. If you’re in one of those communities and tired of crews that don’t show up or prices that move at the door, we bring the same written-price standard and 365-Day Done Right Promise to every job. Our scheduling is coordinated through the Atlanta office, and crews serve Roswell locally with the same equipment and the same book-of-work discipline you’d expect on any Duct Sealing in Roswell job.

FAQs About Duct Sealing in Roswell