Duct Sealing in Lake Jackson - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Lake Jackson

Duct sealing in Lake Jackson typically runs $450 – $1,200 for a whole-home system, and most jobs are completed in a single day with the price written down before we start. We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and our crews work Lake Jackson regularly from our Dallas-Fort Worth dispatch office. We know the difference between a 1960s Dow-built ranch on Center Street and a newer flex-duct home off Highway 288, and that difference matters for how we seal your ducts. Call (361) 326-5060 for a free estimate.

Call (361) 326-5060

Why Hollis Air Duct Cleaning Is Lake Jackson’s Preferred Duct Sealing Company

We’ve been in business since 2004, and our Duct Sealing team has worked enough Lake Jackson homes to recognize the patterns. The planned neighborhoods built by Dow Chemical in the 1940s through 1970s mean entire blocks share the same galvanized trunk line systems, the same degraded interior insulation, and the same seam failures. That uniformity is an advantage for us. We arrive with the right mastic, mesh, and wrap materials already on the truck because we’ve seen your exact system before.

Our technicians are background-checked and uniformed, and they work under The Garrison Standard: arrive inside the quoted window, price in writing before touching anything, complete the job by the book, and leave the site clean. Every duct sealing job carries our 365-Day Done Right Promise in writing. If the seal fails within a year, we return and make it right at no charge, including a free second visit. Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues.

HVAC Duct Sealing in Lake Jackson

HVAC Duct Sealing in Lake Jackson is often the right call when cleaning alone won’t fix the problem, especially in the mid-century ranch homes that dominate this city’s housing stock. The job involves finding every leak point in your supply and return ductwork, preparing the surface properly, then applying mastic sealant and reinforced mesh to create a permanent airtight bond. We finish with exterior wrap on exposed runs. In Lake Jackson’s older Dow-built sections, we regularly find that original 1950s-60s rectangular galvanized trunk lines have lost their gaskets and wraps after 50-70 years of Gulf Coast humidity, and standard foil tape has long since failed on those oily, corroded metal surfaces.

A typical whole-home HVAC duct sealing in Lake Jackson runs $450 – $1,200 depending on system size, accessibility, and how much degraded liner needs removal first. Homes with intact flex duct in newer south and west side subdivisions usually fall at the lower end. Original galvanized systems in the historic downtown blocks or original Dow neighborhoods often need more extensive prep work.

When Sealing Beats Cleaning

Cleaning removes debris. Sealing stops conditioned air from escaping into your attic, crawl space, or slab void. In Lake Jackson, we see homeowners who’ve had their ducts cleaned twice yearly but still can’t cool the back bedrooms. Camera inspection usually reveals supply leaks dumping cold air into the slab cavity instead of the living space. Sealing fixes that.

Mastic vs. Tape on Old Metal

We use duct sealing mastic, a thick water-based compound that brushes on and hardens into a flexible, permanent seal. On Lake Jackson’s aging galvanized steel, mastic outlasts any tape product because it bonds to properly prepared metal and tolerates the thermal expansion from 8-9 months of annual HVAC runtime. Tape adhesive breaks down in this humidity.

Duct Repair in Lake Jackson

Duct Repair in Lake Jackson addresses the physical damage that sealing alone cannot fix: crushed flex duct, separated joints, corroded metal that has rusted through, and fiberglass liner that has degraded to the point of shedding into the airstream. We were called to a mid-century ranch in the original Dow-built section near downtown Lake Jackson where the homeowner complained of uneven cooling and high electric bills. Using camera inspection, our tech found the 1950s rectangular galvanized trunk line had interior fiberglass liner peeling away and exterior wrap crumbling, with major leakage at the seams. We performed source removal, applied mastic and mesh sealing to the supply and return ducts, and wrapped the runs; post-job static pressure dropped and the home held temperature within two degrees room to room.

Duct repair in Lake Jackson typically ranges from $300 for isolated joint reconstruction to $1,800 or more for extensive trunk line replacement in older homes. We always inspect with a camera first so you know exactly what needs repair versus what can be sealed.

Storm and Flood Damage

Hurricane Harvey and subsequent surge events pushed water into duct systems across Lake Jackson. Post-flood duct repair often means replacing waterlogged flex duct or corroded metal rather than sealing it. We assess moisture damage with borescope cameras and won’t seal over compromised material.

Shared System Coordination

In Lake Jackson apartments and condos with shared returns or dryer vent stacks, duct repair requires understanding the whole building’s pressure balance. Repairing one unit’s supply without accounting for shared pathways can create backdrafting or blow seals elsewhere. We coordinate with property management when needed.

Trusted Brands We Service in Lake Jackson

Our trucks carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, plus filtration and sealing products from Guardsman. For Lake Jackson homeowners, this means we stock the specific mastic compounds, mesh tapes, and exterior wraps suited to your system’s age and material, not whatever the hardware store has in stock. Rotobrush rotary systems let us clean and prep duct surfaces before sealing. Nikro negative-air machines maintain proper containment during repair work. Guardsman filtration products integrate with sealed systems to maintain the air quality gains. We don’t have to order parts and come back. Most jobs finish same-day.

Common Duct Sealing Problems We See in Lake Jackson Homes

• Original galvanized seam failure in Dow-built neighborhoods. The 1950s-70s trunk lines in Lake Jackson’s planned communities were built with gaskets and exterior wraps that have now exceeded their service life. We find major leakage at every joint and saddle connection, and the metal itself has developed a thin oil film from decades of humidity that repels standard tapes.
• Degraded interior fiberglass liner shedding into the airstream. That old liner was meant for acoustic dampening and thermal insulation. After 50-70 years in 75-80% relative humidity, it peels and fragments. Sealing over it traps moisture against the metal. We remove degraded liner first, then seal.
• Slab-on-grade return duct pressurization issues. Lake Jackson’s ranch homes pull return air through concrete slab channels. When supply ducts leak into the slab cavity, the return system pressurizes that space instead of the rooms. Sealing supply leaks restores proper airflow to registers.
• Shared system imbalance in multi-family housing. Partial sealing of one unit in a Lake Jackson apartment or condo complex can alter pressure across shared returns and dryer vent stacks. We test static pressure before and after to confirm we haven’t created a new problem downstream.

Pricing for Duct Sealing in Lake Jackson, TX

We Also Serve Cities Near Lake Jackson

Our crews work the full Brazoria County area including Lake Jackson, Clute, Freeport, Angleton, and West Columbia. The same Garrison Standard applies: written price, background-checked uniformed technician, 365-Day Done Right Promise. Dispatch and scheduling are coordinated from our Dallas-Fort Worth office; crews serve Lake Jackson locally.

FAQs About Duct Sealing in Lake Jackson