Fast, Reliable Duct Repair & Sealing Across Ojus
Duct repair and sealing in Ojus, FL typically costs $280–$650 for most residential jobs, with same-day service available when you call before noon. We cover the 33160 ZIP and surrounding acreage properties from our Miami base, usually arriving within 45 minutes to an hour for Ojus calls.
We’re familiar with the stretch of NE 193rd Street, the ranch homes tucked between the Oleta River basin and the canal grid, and the detached workshops that dot larger Ojus lots. Michael Brown, our owner and lead technician, has been pulling flex duct from 140°F Ojus attics for 11 years — he knows which 1970s CBS ranches have the sagging 1980s retrofits and which workshop ducts need mastic, not tape. If your system is blowing weak, smelling musty, or running your power bill up, call (833) 628-3661 for a free estimate.
Why Apex Air Duct Cleaning Service Miami Is Ojus’s Preferred Duct Repair & Sealing Company
Owner-operated and owner-present — that’s the difference. Michael Brown arrives as the lead technician on every Ojus job, not a rotating subcontractor you’ve never met. Over 11 years, we’ve built a reputation in northeastern Miami-Dade by fixing what franchise crews patch and leave.
Our numbers back it up: 867 verified reviews at a 4.9-star rating. Ojus customers specifically mention the thoroughness of our attic inspections and the fact that we don’t declare a job finished until we’ve pressure-tested every sealed joint. We’ve earned repeat calls from property managers near the Aventura border and homeowners along Biscayne Boulevard corridors who’ve learned that duct sealing done halfway fails twice as fast in Ojus humidity.
We carry professional-grade Rotobrush and Nikro equipment — the same negative-pressure systems commercial restoration contractors use — and stock mastic, antimicrobial sealants, and replacement flex duct rated for South Florida’s relentless cooling load. From cleaning to repair to sanitizing, it’s handled in one visit by the same technician who diagnosed it.
Our Duct Repair & Sealing team knows Ojus’s housing stock intimately. We don’t waste your time rediscovering what every local ranch home presents.
Our Duct Repair & Sealing Services in Ojus
Duct Sealing
Leaky ductwork in Ojus doesn’t just waste cooled air — it pulls humid attic air and spore-laden crawlspace air straight into your living space. We seal metal duct seams with mastic compound and fiberglass mesh, then pressure-test to verify zero leakage at operating static pressure. In Ojus’s 1950s–1970s ranch homes, we frequently find original metal trunk lines with deteriorated tape seals that were never designed to last 40+ years of heat cycling.
Flex Duct Repair
This is where Ojus properties separate from the pack. The flex duct installed during 1980s and 1990s renovations in local CBS ranches wasn’t spec’d for near-continuous operation — and in Ojus, your system runs 11 months a year. The inner liner breaks down from repeated exposure to 140°F attic temperatures. We don’t just patch the outer jacket; we replace compromised sections with new insulated flex duct, support it properly to prevent sagging, and seal every connection with mastic. In acreage properties with detached workshops, we also address the longer runs that experience more static pressure stress.
Metal Duct Repair
Ojus’s larger properties sometimes feature 14-gauge metal trunk lines feeding workshops or additions. These heavy-duty ducts develop stress fractures from thermal expansion and the weight of oversized HVAC units common in detached structures. We repair with welded patches or sectional replacement, then coat with mastic sealant for corrosion resistance in Ojus’s humid environment. Simple tape won’t hold here — we use the right method for the load.
Duct Insulation
Unconditioned Ojus attics are brutal. When your 55°F supply air passes through a 140°F attic, condensation forms on the duct exterior, soaking insulation and breeding mold. We replace waterlogged insulation with fresh R-6 or R-8 wrap, sealed at all seams, and verify with thermal imaging. In Ojus’s persistent humidity near the Oleta River, proper insulation isn’t an upgrade — it’s what keeps your repair from failing within two seasons.
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.
Trusted Brands We Service in Ojus
We work with Honeywell, Aprilaire, and Abatement Technologies for air quality components, and our repair stock includes Guardsman antimicrobial coatings for post-repair sealing in mold-prone Ojus systems. Our Rotobrush and Nikro cleaning equipment handles the pre-repair prep — negative-pressure agitation that removes debris before we cut into ductwork. We keep common flex duct diameters, mastic, and insulation on the truck, so most Ojus jobs don’t wait for parts. When you’re running your AC 330 days a year, downtime matters.
Common Duct Repair & Sealing Problems We See in Ojus Homes
- Inner liner breakdown in flex ducts. The 140°F attic temperatures in Ojus’s unventilated ranch attics cook the plastic inner liner of 1980s–90s flex duct until it turns brittle and flakes. Cleaning alone blows this debris into your home — partial replacement is required before sealing can be effective.
- Sagging or detached connections. Near-constant HVAC operation in Ojus means flex duct hangers fatigue faster than in seasonal climates. We find separated joints behind drywall and in soffits where decades of vibration have worked straps loose.
- Mold colonization from persistent humidity. Ojus’s proximity to the Oleta River and Miami-Dade’s canal grid keeps relative humidity elevated even in January. Duct interiors rarely dry between cycles, making antimicrobial sealants part of our standard repair protocol, not an upsell.
- Workshop duct stress fractures. On acreage properties, heavy-gauge metal ducts serving detached workshops handle oversized loads and longer runs. Thermal expansion and unit vibration create cracks that duct tape won’t fix — we weld or replace, then mastic-seal for the long haul.
Pricing for Duct Repair & Sealing in Ojus, FL
| Service | Typical Range in Ojus |
|---|---|
| Duct sealing (mastic, up to 10 joints) | $280–$420 |
| Flex duct repair/replacement (per 25 ft. section) | $340–$520 |
| Metal duct repair (welded patch or sectional) | $450–$650 |
| Duct insulation replacement (attic trunk line) | $380–$580 |
| Antimicrobial sealant application (post-repair) | $120–$200 |
What moves you within these ranges: attic accessibility (Ojus’s low-slope ranch roofs are usually manageable, but tight truss bays add time), extent of mold remediation needed before sealing, and whether we’re matching existing duct diameter or upsizing for better airflow. We inspect first, quote exact, and start work only when you approve. Estimates are free — call (833) 628-3661 to schedule.
We Also Serve Cities Near Ojus
Our service radius covers North Miami Beach to the south, Sunny Isles Beach and Aventura along the coastal corridor, and Hallandale Beach to the north. Same technician, same equipment, same direct accountability — whether you’re in a beachfront condo or a inland acreage property.
Serving Ojus, FL — Our Local Coverage Area
We’re based in the Ojus 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 Ojus
The combination of 140°F attic heat and 11-month annual HVAC operation degrades flex duct inner liners faster than in milder or less frequently used systems. In Ojus’s 1950s–1970s ranch homes, we regularly find that cleaning dislodges brittle liner material that has already failed structurally — sealing or reconnecting compromised duct is temporary at best. We replace the damaged sections with new flex duct rated for continuous use, then seal with mastic. Call (833) 628-3661 for an inspection — estimates are free.
Yes — workshop ducts on Ojus acreage properties typically run longer distances and handle heavier loads, making leaks more costly in both energy and equipment wear. We frequently find that 14-gauge metal workshop ducts have separated at seams or developed stress fractures that simple tape won’t resolve; mastic sealing or welded repair is required for structural integrity. Call (833) 628-3661 to have Michael Brown assess your workshop system.
We apply Guardsman antimicrobial sealants for mold-prone Ojus systems, use Honeywell and Aprilaire components when air quality upgrades accompany repair, and stock Abatement Technologies HEPA filtration for post-repair air scrubbing. Our core repair materials — mastic, fiberglass mesh, insulated flex duct — are commercial-grade, not hardware-store grade. Call (833) 628-3661 to discuss what’s right for your property.
Most Ojus homes benefit from duct inspection every 3–5 years given the near-continuous operation and humidity stress; if you notice uneven cooling, musty odors, or rising power bills, schedule sooner. Homes with 1980s–90s flex duct retrofits or detached workshop systems should consider inspection every 2–3 years due to accelerated wear. Call (833) 628-3661 for a free condition assessment.
No — sealing alone traps existing mold inside the system and can worsen air quality. In Ojus’s persistently humid environment, we first remediate active growth, replace waterlogged insulation, then seal with antimicrobial-treated mastic to prevent recurrence. The sequence matters: clean, repair, seal, protect. Call (833) 628-3661 for a proper diagnosis — estimates are free.
Ready to stop losing cooled air to your Ojus attic? Call (833) 628-3661 for a free estimate. Michael Brown will inspect your system personally, explain what we’re seeing in plain terms, and handle the repair start to finish — no handoffs, no surprises.
Written by Michael Brown, Owner at Apex Air Duct Cleaning Service Miami, serving Ojus and northeastern Miami-Dade County since 2013.