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.
Before
After
Before
After
Before
AfterFast, Reliable Duct Sealing Across Cutler Bay
Most homes in Cutler Bay were built between the 1970s and 1990s with flexible ductwork that has now spent decades cycling through tropical-monsoon humidity and Biscayne Bay salt air. The sealing problem here is usually not one big tear but dozens of pinhole leaks and failing factory joints along runs that were never sized for how hard local systems work. We’re the Cutler Bay crew that finds those leaks, fixes them with corrosion-resistant materials, and puts it in writing before we start. Call (361) 326-5060 for a free estimate. Scheduling is coordinated from our Miami office, and our technicians serve Cutler Bay locally.
Why Hollis Air Duct Cleaning Is Cutler Bay’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our Cutler Bay Dryer Vent Cleaning customers know we show up inside the quoted window, price the job in writing before touching anything, and leave the site clean. That’s The Garrison Standard, and it’s how every Hollis location operates, including ours serving South Florida.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. We don’t send day laborers or subcontractors. The person at your door is a Hollis employee, accountable to the 365-Day Done Right Promise we put on every job.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday when your AC is blowing musty air through a leaking return.
We know Cutler Bay’s housing stock. We’ve worked on original flex runs in neighborhoods from Lakes by the Bay to Old Cutler Road to Cutler Ridge, and we’ve seen the same patterns: dried-out factory joints, salt-corroded metal collars, and post-storm mold blooms that make sealing a corrosion and microbial job, not just an airflow fix.
Duct Sealing Services in Cutler Bay
Duct Sealing Services in Cutler Bay address the specific failure modes of 1970s – 1990s flexible ductwork exposed to decades of salt air and humidity cycling. The job involves identifying leaks at joints, plenum connections, and crushed runs; cleaning the system under negative pressure with HEPA filtration when microbial growth is present; and sealing with corrosion-resistant mastic and mesh rather than standard foil tape that fails within a season on coastal systems. A typical whole-house duct sealing job in Cutler Bay runs $850 – $1,800 depending on system size, accessibility, and whether post-storm mold remediation is needed first.
Leak Detection and Mastic Sealing
We pressurize the duct system and use smoke pencils or theatrical fog to find every leak point, then seal accessible joints with duct sealing mastic, a thick paste that bonds to metal and flex materials and remains flexible through thousands of thermal cycles. On coastal Cutler Bay systems, we specify corrosion-resistant formulations that won’t degrade when salt-laden attic air contacts the seal.
Post-Storm Mold Protocol
After a hurricane or tropical storm knocks out power, indoor humidity spikes to near saturation and mold colonizes unsealed duct interiors. Sealing those ducts afterward without cleaning traps spores inside. We perform source removal under negative pressure with Nikro negative-air machines and HEPA filtration before any sealant goes on, then verify with visual inspection.
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 Cutler Bay
Duct Insulation in Cutler Bay protects against the thermal losses that make your AC work harder than it should in 90-degree summer heat with 80% humidity. Original insulation on 1980s flex runs has often compressed, torn, or absorbed moisture, dropping its R-value to near zero. We replace or supplement with closed-cell foam or fiberglass wraps rated for Florida’s climate, sealed at every seam to prevent condensation. A typical duct insulation job in Cutler Bay runs $600 – $1,400 for a single system, depending on linear footage and whether we’re working in an accessible attic or a tight crawl space.
Condensation Control
Uninsulated or poorly insulated ducts in Cutler Bay attics sweat profusely during summer months, creating water damage and mold-friendly conditions. We size insulation thickness to the local dew point and seal the vapor barrier completely, so moisture stays outside the duct envelope.
Crushed Run Replacement
On a 1984 single-family home off Old Cutler Road with original flex runs, our tech ran a camera inspection from the air handler and found a return duct crushed flat behind a knee wall, plus return-side leakage pulling attic air straight into the system. We performed source removal under negative pressure with HEPA filtration and agitation tools, then sealed the crushed return, re-taped and mastic-sealed every accessible joint on the supply and return ducts, and reinsulated the run. The blower motor amp draw dropped back into nameplate range, and the homeowner stopped smelling the musty bay-air odor at the registers.
Trusted Brands We Service in Cutler Bay
We carry professional-grade equipment and materials from Nikro, Honeywell, and Aprilaire, the same tools commercial crews use on larger buildings. For Cutler Bay’s salt-air environment, we stock corrosion-resistant mastic compounds and antimicrobial treatments that standard hardware-store products can’t match. Parts and materials are held at our Miami-area warehouse, so we’re not waiting on shipping when your system needs attention. We explain what each product does and why we’re using it on your specific job, in plain terms, before we start.
Common Duct Sealing Problems We See in Cutler Bay Homes
- Factory joints dried out and separated. The original flex-to-plenum connections on 1970s – 1990s Cutler Bay homes have cycled through forty years of humidity swings. The adhesive and mechanical fasteners degrade, creating gaps that pull hot, unfiltered attic air straight into your return.
- Salt corrosion on metal components. Biscayne Bay’s salt air penetrates attic vents and corrodes the metal collars, boots, and plenum seams that hold your duct system together. Standard foil tape can’t bond to pitted metal and fails within a season.
- Post-hurricane mold colonization. When power goes out after a tropical storm, indoor humidity hits near-saturation within hours. Mold spores already present in unsealed ducts bloom across the interior surface. Sealing without cleaning first locks the contamination inside your air distribution system.
- Crushed or disconnected runs behind walls and knee walls. Original flexible ductwork in Cutler Bay’s older homes was often routed through tight framing cavities where it got compressed by subsequent renovations or simply collapsed from age. The system still moves air, but through a fraction of its designed cross-section, straining the blower and starving distant rooms.
Pricing for Duct Sealing in Cutler Bay, FL
A typical whole-house duct sealing job in Cutler Bay runs $850 – $1,800. Duct insulation for a single system runs $600 – $1,400. Combined sealing and insulation on an older home with post-storm mold remediation typically falls between $1,400 and $2,800. What moves the price: system size (tonnage and linear footage), attic accessibility, whether we need to perform source removal before sealing, and how many crushed or disconnected runs require repair or replacement.
We give you one flat price per system, agreed in writing before any work starts. No per-vent pricing. No add-ons at the door. You’ll see the number, sign off on it, and that’s what you pay. Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Cutler Bay
Our Duct Sealing team serves homeowners throughout South and Central Florida, including Duct Sealing in Cutler Bay and surrounding areas. We also dispatch to Jacksonville, Miami, Tampa, and Orlando. Each location operates independently under The Garrison Standard, with the same written pricing and 365-Day Done Right Promise.
Serving Cutler Bay, FL - Our Local Coverage Area
We’re based in the Cutler Bay 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 Cutler Bay
Cutler Bay’s combination of salt-laden air from Biscayne Bay, year-round high humidity, and 1970s – 1990s flexible ductwork creates a unique corrosion and microbial environment that inland suburbs don’t face. Salt pits metal components within a few seasons, and humidity cycling degrades factory joints faster. Sealing here requires corrosion-resistant mastic and often pre-cleaning for mold, not just tape and go. Call (361) 326-5060 for an exact quote on your system.
Have the ducts inspected first, not sealed first. Power outages spike indoor humidity to near-saturation, and mold colonizes unsealed duct interiors within 48 – 72 hours. Sealing without cleaning traps those spores inside. We perform source removal under negative pressure with HEPA filtration, then seal with antimicrobial-compatible mastic. Call (361) 326-5060 to schedule a post-storm inspection.
Dirty ducts reduce airflow but don’t typically cause hot rooms, musty odors at registers, or blower motors running above nameplate amperage. Those symptoms point to leakage, crushed runs, or disconnected joints. We run a camera inspection from the air handler to show you exactly what’s happening inside your system before we quote any work. Call (361) 326-5060 to book a camera inspection.
Yes. We perform source removal according to NADCA ACR, the Assessment, Cleaning, and Restoration standard, before applying any sealant. That means negative-air containment, HEPA filtration, and mechanical agitation when needed. Sealing over contamination violates the standard and traps mold inside your air distribution system. We don’t do it, and we document our process. Call (361) 326-5060 with specific questions about our protocol.
The real fix is accessing the run, replacing the crushed or disconnected section with properly sized flex duct, sealing all joints with mastic and mesh, and reinsulating to the correct R-value for Cutler Bay’s attic conditions. Patching with tape from a register boot doesn’t restore design airflow and leaves the blower working against restriction. We quote the full repair in writing before cutting any access. Call (361) 326-5060 for a free estimate.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Cutler Bay since 2004 as part of the Garrison Partners family.