Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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.
Fast, Reliable Duct Sealing Across Stone Mountain
Duct sealing in Stone Mountain typically runs $450 to $1,100 for a full system, and most jobs are completed in a single visit. The price depends on how much granite grit has built up inside the ductwork and how many accessible joints need mastic work. If you’re seeing gray dust on vent covers or rooms that never quite reach the thermostat setting, call (229) 489-7780 for a written estimate before any work starts.
We know Stone Mountain homes differently than an Atlanta crew that drives over for the day. The houses near the mountain base, off Rockbridge Road and down toward Stone Mountain Village, carry decades of fine stone dust in their returns. That changes how duct sealing has to be done here. The granite legacy under this city is not a metaphor. It is physical. It sits in your ductwork. And it has to be removed before any sealant will hold.
Why Hollis Air Duct Sandy Springs Is Stone Mountain’s Preferred Duct Sealing Company
Hollis Air Duct Sandy Springs runs on The Garrison Standard, which means the price is written down before we touch anything and it does not move. Stone Mountain homeowners have told us stories about quotes that doubled once a crew got into the attic. That does not happen on our jobs. Roy Castellanos sets the standard here: arrive inside the window, price in writing, complete the work by the book, leave the site cleaner than we found it. It is the same standard we have run on since 2004 as part of the Garrison Partners family.
Our technicians are background-checked and uniformed. You know who is walking into your home before they arrive. They carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, plus filtration products from Aprilaire and Guardsman. That matters on Stone Mountain jobs because the coating inside your ducts is not ordinary dust. It is granite powder mixed with summer humidity, baked into a crust that hardware-store tools cannot remove. Our negative-air machines actually do the work.
Styles & brands we work with
Duct Sealing Services in Stone Mountain
Duct Sealing Services in Stone Mountain means more than painting mastic on visible joints. In this city, it means source removal first. The granite dust that has been circulating since the quarries shut down combines with humid Georgia air and forms a cement-like layer on duct interiors. If sealant goes on top of that crust, it peels within a year. So the real Stone Mountain job is a two-step process: HEPA-filtered source removal, then mastic application on all accessible supply and return joints. Expect $450 to $850 for a typical single-system home here.
Return Chase Sealing
Older Stone Mountain ranches and split-levels often have return chases that pull attic air through gaps in the framing. Sealing the visible duct joints does not fix the leak if the return chase is sucking fiberglass insulation into the system. We inspect the return path itself and seal the framing, not just the metal.
Split-Level Crawlspace Sealing
Split-levels on the east side of the mountain sweat. Condensation forms on crawlspace ducts after summer thunderstorms, and mastic fails at the low points where water pools. We seal those sections with materials rated for damp locations and check the drain path before we finish.
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.
Duct Insulation in Stone Mountain
Duct Insulation in Stone Mountain is not a comfort upgrade. It is a moisture control measure. When humid outdoor air meets cold duct surfaces in a crawlspace or attic, condensation forms. That condensation feeds mold and causes mastic to fail. Insulating the duct exterior slows that cycle. Expect $8 to $12 per linear foot for wrap insulation on accessible duct runs in Stone Mountain homes, depending on access and condition.
Attic Duct Wrap Replacement
Homes built in the 1960s and 1970s here often have original fiberglass wrap that has compressed, torn, or fallen away. Replacing it before sealing prevents condensation from undoing the mastic work. We use foil-faced wrap on attic runs and inspect every turn and elbow where water tends to collect.
Crawlspace Insulation Retrofit
Split-level crawlspaces near the mountain stay damp for days after a summer storm. Bare ducts drip. Insulating those runs with closed-cell wrap and sealing the low joints stops the sweating. It also keeps the granite grit from clumping into wet paste that blocks airflow.
Trusted Brands We Service in Stone Mountain
We service and seal duct systems connected to filtration and HVAC equipment from Aprilaire, Guardsman, and Rotobrush, among others. When your Aprilaire filter housing has gaps, after sealing we often recommend stepping from a MERV 8 to a MERV 11 or 13, because a sealed system actually moves more air through the filter media instead of pulling around it. Our techs carry common dimensions for Stone Mountain jobs, which means we are not driving back to town for a part mid-job. The goal is one visit, one written price, one clean system.
See the difference
Before
After
Before
After
Before
AfterCommon Duct Sealing Problems We See in Stone Mountain Homes
- Granite crust on duct interiors. Fine stone dust from the mountain’s granite legacy mixes with humid air and hardens into a crust that regular cleaning does not remove. Sealant applied over this crust peels within months, so source removal has to come first.
- Attic returns pulling fiberglass insulation. Homes within a half-mile of the base often have return chases that leak at the framing. We find fiberglass strands packed against the return grille in these houses.
- Crawlspace condensation in split-levels. Summer thunderstorms leave standing water in crawlspaces. Ducts sweat, mastic fails at low points, and the cycle repeats every year until the drainage and insulation are addressed.
- Unpaved driveway dust loading. On Rockbridge Road and the unpaved lanes off it, vehicle traffic kicks up granite fines that get pulled straight into leaky returns. Sealing the returns cuts the loading at the source.
Pricing for Duct Sealing in Stone Mountain, GA
A typical duct sealing job in Stone Mountain runs $450 to $1,100. A smaller ranch with accessible attic ducts and light grit falls on the low end. A 1970s split-level with crawlspace access, heavy granite crust, and return chase leaks falls on the high end. The difference is time, not upsell. The price is written down before work starts, covers the full job, and does not move once the tech is inside. Call (229) 489-7780 for a free estimate and a firm written number.
Some cheaper quotes leave out source removal entirely. They wipe the visible joints, paint mastic over the crust, and hand you an invoice. That fails inside a year here. Our 365-Day Done Right Promise covers every sealed joint in writing. If something fails, we return and make it right at no charge, including a free second visit.
We Also Serve Cities Near Stone Mountain
Hollis Air Duct Sandy Springs serves Stone Mountain and the surrounding communities. Our crews regularly work in Clarkston, Smyrna, Roswell, and Holly Springs. If you are outside the immediate Stone Mountain area, call (229) 489-7780 and we will confirm coverage. For more detail on the full scope of work, see our Duct Sealing service page or the Duct Sealing in Stone Mountain overview.
Serving Stone Mountain, GA - Our Local Coverage Area
We’re based in the Stone Mountain 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 About Duct Sealing in Stone Mountain
Yes. Granite dust combined with humid Georgia air forms a hard crust on duct interiors, and mastic applied over that crust peels within months. The dust has to be removed with HEPA-filtered source removal before any sealant will bond. This two-step process is the realistic standard for homes near the mountain, and any quote that skips it is a leak waiting to come back. Call (229) 489-7780 for a written price that includes source removal.
Homes near the mountain with unpaved driveways or lanes typically need cleaning and resealing every 3 to 5 years. The granite fines kicked up from those roads load the ducts faster than in paved subdivisions. If you are seeing gray dust on vent covers more than twice a year, that interval may be shorter. A camera inspection will tell you exactly what is in there.
Original flexible ducts from that era can be sealed if the inner liner is intact, but many have degraded to the point where the better move is replacement of the worst sections and sealing of the rest. We camera-inspect the runs on Stone Mountain split-levels and give you a written recommendation. No guessing. The price covers what we agree on, in writing.
Yes, if the ducts leak. Filters catch what passes through them, but leaky returns pull unfiltered air straight from the attic or crawlspace around the filter entirely. That is how granite dust and fiberglass show up on vent covers even when the filter is clean. Sealing closes the bypass. It makes the filter do the job it was bought for.
Yes, sealing the return side cuts the dust at the source, so less granite grit gets pulled into the system. That gray powdery residue on your vent covers is a mix of granite dust and pollen. If it keeps returning after cleaning, the system is leaking. Sealing is the fix, and the grit stops coming back. Call (229) 489-7780 for a free estimate and a firm written number before any work starts.
Written by Roy Castellanos, Owner at Hollis Air Duct Sandy Springs, serving Stone Mountain and the surrounding communities.