Fast, Reliable Duct Repair & Sealing Across The Hammocks
Duct repair and sealing in The Hammocks typically costs $180-$650 depending on whether you need spot sealing, flex duct replacement, or full ductboard restoration, and most jobs are completed in a single visit. If your home was built during the community’s 1985-1995 development wave, your original fiberglass ductboard or flex duct is now 30-40 years old and likely showing the exact failure patterns we see daily in this ZIP code. Call (844) 685-6342 and a live person will answer, 24 hours a day. We’ll give you an upfront price before we lift a single tool, and we back every job with our 90-Day Done Right Promise in writing.
We’ve been serving South Florida homeowners for over 42 years, and our Duct Repair & Sealing team knows The Hammocks specifically - the reclaimed wetland substrate, the Everglades-border humidity, the uniform construction vintage that means your neighbor’s ductwork is failing the same way yours is. We don’t guess. We camera-inspect every system before and after, so you see what we see.
Why Bellows Air Duct & Vent Co. Is The Hammocks’s Preferred Duct Repair & Sealing Company
Ray Castillo founded Bellows Air Duct & Vent Co. in 1984 on a simple premise: show the homeowner exactly what’s wrong, quote one honest price, and stand behind the work. That approach has built our reputation across Miami-Dade County, and it’s why The Hammocks homeowners call us back when a second property needs attention. We’re not a coupon-chasing outfit that changes the price at the door.
Our technicians are background-checked and uniformed, and they answer to a live person at our office - not an app, not a call center abroad. Most Duct Repair & Sealing in The Hammocks calls are scheduled same-day or next-day, and we carry the parts and equipment to finish in one visit. That matters when your AC is running 10-11 months a year and every day of delay means more conditioned air bleeding into your attic.
Before we start, we show you camera footage of your duct interior. After we finish, we show you the repair. No claims without proof. No paperwork if something’s not right - just our 90-Day Done Right Promise, the same guarantee Ray Castillo has honored since 1984.
Our Duct Repair & Sealing Services in The Hammocks
Flex Duct Repair
The Hammocks’s original flex duct runs are failing on a predictable schedule. Installed during the 1985-1995 build-out with minimal mid-span support, they’ve sagged against attic decking and pooled condensation for decades. We regularly find collapsed sections near air handlers, especially in townhomes along SW 154th Terrace and throughout the community’s western sections bordering the Everglades buffer. Our repair protocol: replace damaged runs with insulated flex rated for South Florida attic conditions, re-support remaining spans with proper strapping, and seal all takeoff joints with mastic. Most flex duct repairs in The Hammocks run $280-$480.
Duct Sealing
Sealing is the single most cost-effective improvement for The Hammocks homes with intact ductboard but degraded joints. Original mastic tape and sealants applied 30-40 years ago have dried, cracked, and separated under constant 150°F+ attic heat cycling. We access joints through existing service openings where possible, apply fresh mastic sealant to all connections, and pressure-test the system to verify seal integrity. A typical duct sealing job in The Hammocks costs $180-$340 and can recover 15-30% of conditioned air currently lost to your attic.
Metal Duct Repair
Some The Hammocks homes, particularly earlier construction near the community’s eastern entrance, used galvanized metal trunk lines with fiberglass liner. The liner degrades; the metal corrodes at seams. We patch or replace sections, re-line where appropriate, and transition to modern flex or ductboard where metal has failed beyond practical repair. Metal duct repair in The Hammocks typically ranges $350-$650 depending on accessibility and extent of corrosion.
Duct Insulation & Mastic Sealant Application
Even intact ducts lose efficiency when insulation degrades. In The Hammocks’s unconditioned attics, original insulation has compressed, torn, or absorbed moisture over decades. We apply closed-cell insulation wraps and fresh mastic sealant at all penetrations, creating a thermal and vapor barrier that stands up to this community’s extreme humidity. Duct insulation work runs $320-$580 in The Hammocks.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
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.
Trusted Brands We Service in The Hammocks
We stock parts and materials from Rotobrush, Nikro, and Abatement Technologies - the same brands serious HVAC contractors specify for South Florida’s demanding conditions. That means no waiting on special orders for most The Hammocks repairs. Our trucks carry insulated flex duct, mastic sealant, mechanical fasteners, and replacement ductboard in standard dimensions, so when we arrive at your home near SW 157th Avenue or anywhere in 33196, we’re equipped to finish. If your system uses specialized components, we’ll tell you upfront and source them fast. No bait pricing, no surprises on the bill.
Common Duct Repair & Sealing Problems We See in The Hammocks Homes
- Fiberglass ductboard seams separating under decades of heat cycling. The Hammocks’s unconditioned attics reach 150°F+ regularly. Original ductboard, installed 1985-1995, has expanded and contracted thousands of times. Seams open. Conditioned air bleeds into the attic. Your system runs longer. Your humidity rises.
- Sagged flex duct forming condensation pools and mold reservoirs. This is the community’s signature failure. Unsupported mid-spans sag, water collects at low points, and mold colonizes the liner. Every cooling cycle pushes spores and musty air through your vents. We’ve found this pattern from Country Walk to the western townhomes nearest the Everglades.
- Degraded mastic tape allowing particulate shedding into supply air. Original tapes and sealants have exceeded their service life. As they fail, tiny fiberglass particles and accumulated dust enter your breathing air. Camera inspection reveals the shedding surfaces clearly.
- Collapsed flex duct near air handlers dumping unfiltered attic air. The combination of heat, humidity, and physical stress causes complete failure at high-stress junctions. We replaced a run on SW 154th Terrace where collapsed duct had been pulling 140°F attic air into two bedrooms for months before the homeowners called.
Pricing for Duct Repair & Sealing in The Hammocks, FL
We’re upfront about numbers because we’ve seen what bait-and-switch pricing does to homeowners who’ve already been burned once.
| Service | Typical Range in The Hammocks |
|---|---|
| Spot duct sealing (mastic, 1-3 joints) | $180-$280 |
| Full duct sealing (whole system) | $320-$480 |
| Flex duct repair/replacement (single run) | $280-$480 |
| Multiple flex duct runs | $450-$780 |
| Metal duct patch/repair | $350-$650 |
| Duct insulation upgrade | $320-$580 |
What moves you within these ranges: attic accessibility, extent of damage visible on camera inspection, and whether we can reach problem areas through existing openings or need to create access. We show you everything before quoting. The price we give is the price on the invoice. Seniors and veterans receive a permanent 5% discount. Repairs over $250 qualify for $50 off. And if you have a written estimate from another company, we’ll provide a free second opinion.
Call (844) 685-6342 for your free estimate - we’ll camera-inspect your system and give you an exact number.
We Also Serve Cities Near The Hammocks
Our crews work daily throughout western Miami-Dade, including Country Walk, The Crossings, Three Lakes, and Kendall West. These communities share similar construction vintages and climate stresses with The Hammocks, and we apply the same diagnostic rigor and upfront pricing everywhere we go. If you’re on the border between neighborhoods, call - we know the local ZIP boundaries and we’ll tell you honestly whether your home falls in our standard service radius.
Serving The Hammocks, FL - Our Local Coverage Area
We’re based in the The Hammocks 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 The Hammocks
Yes. Ductboard installed during The Hammocks’s 1985-1995 build-out is now 30-40 years old and has endured approximately 120,000-150,000 heat-cooling cycles in unconditioned attic conditions. We camera-inspect systems this age weekly and find separated seams, degraded liner surfaces, and failed original sealants in better than 80% of cases. The specific combination of 150°F+ attic heat and Everglades-border humidity accelerates failure beyond what ductboard manufacturers designed for. Call (844) 685-6342 and we’ll show you exactly what your system looks like inside - estimates are free, and there’s no obligation.
In most cases, yes. We access duct joints through existing service openings, register boots, and air handler connections, then apply mastic sealant with extension tools designed for tight attic spaces. For The Hammocks’s typical ductboard systems, we can seal 80-90% of accessible leaks without cutting new access holes. If we do need to open a section, we repair and seal the access point as part of the job. The mastic we use remains flexible in high heat and bonds to fiberglass, metal, and flex duct. Call for a camera inspection and we’ll show you what’s reachable.
Almost certainly, if your home has original flex duct. This is the most common call we get from The Hammocks homeowners, and it’s the community’s distinctive failure pattern. Unsupported flex duct sags over 25-40 years, condensation pools at low points, and mold colonizes the liner. Every cooling cycle re-wets the colony and pushes spores through your vents. We found exactly this on SW 154th Terrace: two bedrooms smelled of mildew because a sagged run had collapsed near the air handler and pooled water for months. We replaced the damaged section, re-supported the span, and sealed all joints - smell gone in 24 hours. If you notice musty odors when the compressor kicks on, call (844) 685-6342 for inspection.
Modern mastic formulations applied by our technicians typically last 20-25 years in South Florida attic conditions, and we use products rated for continuous 200°F exposure. That’s roughly double the effective life of the original tapes and sealants installed during The Hammocks’s construction. The key difference: we apply mastic to clean, prepared surfaces at proper thickness, then allow full cure time before pressurizing the system. Original construction often used thin tape applications that failed within 10-15 years. Our work is backed by the 90-Day Done Right Promise - if a seal fails prematurely, we return at no charge.
Sectional repair is often the right approach for The Hammocks homes. We camera-inspect the full system, identify failed sections versus intact runs, and replace only what’s necessary. A typical repair addresses 1-3 damaged runs while re-supporting and sealing the remaining system. This saves substantial cost versus full replacement and eliminates the failure points that matter. Full replacement becomes advisable when multiple runs show degradation, original support is universally inadequate, or you’re addressing mold contamination comprehensively. We’ll show you the camera footage and give you both options with exact pricing. Call (844) 685-6342 - estimates are free, and we don’t push work you don’t need.
Ready to fix your ductwork? Call Bellows Air Duct & Vent Co. at (844) 685-6342 for a free camera inspection and upfront estimate. We’ll be there when we say, we’ll show you what we find, and we’ll stand behind the work - no paperwork, no arguing, for 90 days.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving The Hammocks since 1984.