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 Kemah
Kemah’s position on Galveston Bay means your ductwork fights a battle most Texas homeowners never face. Salt-laden Gulf air doesn’t just make things humid here; it actively corrodes metal components and forces your HVAC system to work harder as seals deteriorate. We dispatch crews to Kemah from our Dallas-Fort Worth coordination office, and our technicians know the difference between standard humidity problems and the salt-specific failures that show up in bayfront cottages and elevated homes along Highway 146. If you’re noticing uneven cooling, rising energy bills, or musty airflow from vents, call (361) 326-5060. We’ll give you a written price before any work starts, and every repair carries our 365-Day Done Right Promise.
Why Hollis Air Duct Cleaning Is Kemah’s Preferred Duct Sealing Company
We’ve been sealing ducts since 2004, and the Garrison Partners family has learned that Kemah homeowners don’t want promises; they want the job done by the book, with a price that doesn’t move once the van is parked. Our Duct Sealing team follows The Garrison Standard on every Kemah call: arrive inside the quoted window, price in writing, complete the work to code, leave the site clean.
Our technicians are background-checked and uniformed, so you know exactly who walks through your door. Phones are answered by a live person 24 hours a day, seven days a week. No voicemail loops, no callback queues, no waiting until Monday to schedule. That’s not a perk; it’s how we operate.
What separates us from competitors who advertise in Kemah is our written guarantee. The 365-Day Done Right Promise means if our seal fails within a year, we come back and make it right at no charge, including a free second visit. We don’t negotiate this after the fact; it’s on every invoice before we touch your system.
Air Duct Sealing in Kemah
Air Duct Sealing in Kemah addresses a specific regional problem: salt-corroded joints and deteriorating mastic in duct runs exposed to constant Gulf moisture. The job involves pressurizing your duct system to locate leaks, then sealing joints, connections, and penetrations with professional-grade mastic or metal-backed tape rated for high-humidity environments. In Kemah, we regularly find that original flexible ductwork in mid-century cottages near the marina has become brittle, while elevated homes on pilings show separation at sagging under-floor connections. A typical residential duct sealing job in Kemah runs $450 – $850 for a single system, depending on accessibility and the extent of deterioration. Whole-home sealing on larger stilted properties with multiple zones can reach $1,200 – $1,800.
Leak Detection and Pressure Testing
We pressurize your duct system and measure airflow loss at the air handler. In Kemah homes, we often find 20 – 30 percent leakage at original galvanized connections that have rusted through from salt exposure. The test takes about 45 minutes and gives us a precise map of where your conditioned air is escaping into attics, crawlspaces, or the gap beneath elevated floors.
Mastic Application and Joint Reinforcement
We seal accessible joints with water-based duct mastic, then reinforce with fiberglass mesh for structural integrity. For Kemah’s salt-air environment, we specify corrosion-resistant fasteners and hardware where standard materials would fail within a season. This isn’t overbuilding; it’s matching the material to the location.
Duct Sealing Services in Kemah
Duct Sealing Services in Kemah cover everything from spot repairs on isolated leaks to complete system resealing after duct cleaning or HVAC replacement. We also handle Air Duct Cleaning in Kemah and Dryer Vent Cleaning in Kemah, and many homeowners schedule sealing alongside cleaning since the ducts are already exposed. The work typically takes 3 – 5 hours for a standard single-family home, longer for multi-zone systems in larger bayfront properties. Pricing follows the same ranges: $450 – $850 for most residential sealing, with complex elevated homes or commercial properties quoted individually after inspection.
Post-Cleaning Sealing Protocol
After rotary brush or negative-air cleaning disturbs existing seals, we inspect every joint and register boot. Kemah’s older cottages near Bradford Avenue often need complete mastic replacement where decades of salt corrosion have reduced original seals to powder. We photograph the before condition and show you the completed work.
Elevated Home and Crawlspace Access
Homes on pilings present unique access challenges. Our crews carry equipment rated for confined-space work and document condition with photos you can review. The Garrison Code requires we treat your property like our own: protective sheeting, tool accountability, and a walk-through before we leave.
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.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Kemah
We seal and repair ductwork connected to equipment from every major manufacturer, and we stock sealing materials from Aprilaire, Abatement Technologies, and Guardsman for Kemah jobs. These aren’t hardware-store tapes that peel in humidity; they’re professional-grade mastics, metal-backed tapes, and corrosion-resistant fasteners rated for coastal environments. Rotobrush rotary systems let us clean before we seal, ensuring new mastic adheres to sound metal rather than corrosion scale. Because we maintain inventory at our regional facility, most Kemah repairs don’t wait on parts. A typical sealing job is completed in one visit, with before-and-after photos of your specific duct runs included on the invoice.
Common Duct Sealing Problems We See in Kemah Homes
- Salt-corroded galvanized connections. In Kemah’s older bayfront neighborhoods, ducts often show accelerated rust and corrosion from salt spray carried by prevailing southeast winds, a pattern rarely seen even a few miles inland. We replace compromised metal and seal with materials rated for marine exposure.
- Flexible duct deterioration in crawlspaces. Elevated homes on pilings expose under-floor duct runs to salt air and standing water after storms. Original flexible duct becomes brittle and separates at collars, leaking conditioned air directly to the exterior.
- Sagging duct runs in mid-century cottages. Homes built in the 1950s and 1960s near Highway 146 often have original strapping that has failed, creating low points where condensation collects and mastic washes away. We re-support and reseal these runs to prevent recurrence.
- Register boot separation at drywall. The constant expansion and contraction from Kemah’s humid summers to cooler winter fronts loosens register connections. We seal these with expanding foam and metal tape, not caulk that cracks with thermal movement.
Pricing for Duct Sealing in Kemah, TX
Most residential duct sealing in Kemah costs between $450 and $850 for a single HVAC system. Whole-home sealing on larger properties with multiple zones or extensive crawlspace work runs $1,200 – $1,800. What moves the price: accessibility (crawlspace height, attic temperature), extent of corrosion damage requiring metal replacement, and whether we coordinate with Air Duct Cleaning in Kemah or other services. We don’t quote per-vent or hit you with add-ons once the technician arrives. The price is written down before work starts, and it doesn’t change at the door. Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Kemah
Our crews work throughout the Galveston Bay area, including Kemah and neighboring Bacliff, League City, Seabrook, and Dickinson. Each community has its own housing stock and environmental conditions, and we adjust our materials and methods accordingly. Salt exposure decreases inland, but humidity and aging ductwork remain common threads.
Serving Kemah, TX - Our Local Coverage Area
We’re based in the Kemah 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 Kemah
We typically schedule Kemah appointments within 2 – 4 business days, with dispatch coordinated from our Dallas-Fort Worth office and crews serving the area locally. Call (361) 326-5060 for current availability; estimates are free and we’ll give you a written price before any work starts.
Yes, we seal ducts throughout Kemah, from the older cottages near the marina and Bradford Avenue to newer stilted construction along the bay and Highway 146 corridors. Our crews carry equipment rated for elevated home access and confined crawlspaces.
We answer calls live 24 hours a day, seven days a week, and will schedule urgent appointments for complete system failures or safety concerns like carbon monoxide risks from backdrafting. For standard comfort issues, we book during regular hours to maintain our arrival-window commitment.
Kemah pricing is comparable to League City and Seabrook, though bayfront properties with elevated construction or extensive salt corrosion may run toward the higher end of our $450 – $850 range. Inland homes in Dickinson sometimes require less corrosion-specific material, which can reduce parts costs slightly.
Every repair is covered by our 365-Day Done Right Promise in writing. If the seal fails within a year, Hollis returns and makes it right at no charge, including a free second visit. This applies to all Kemah jobs and is not a negotiated add-on; it’s standard on every invoice.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Kemah and the Galveston Bay area since 2004.