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.
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AfterFast, Reliable Duct Sealing Across Lake Shore
Duct sealing in Lake Shore typically runs $450 – $1,200 for a whole-home system, and most jobs are completed in a single visit. If you’re losing heated or cooled air through gaps in your ductwork, you’re paying to condition your crawlspace or attic instead of your living space.
We’ve worked on homes from the waterfront ranches along the Magothy to the colonials back in the woods off Mountain Road. Lake Shore’s mix of salt-air exposure, high humidity, and storm-surge risk creates duct problems you won’t find inland. Our crews dispatch from the Seattle office and carry mastic, foil tape, and mechanical fasteners sized for both the original sheet-metal runs in those 1960s ranchers and the flex-duct networks in newer heat-pump homes. Call (361) 326-5060 for a free written estimate.
Why Hollis Air Duct Cleaning Is Lake Shore’s Preferred Duct Sealing Company
Lake Shore homeowners know the difference between a crew that understands bay-front construction and one that’s guessing. We’ve sealed ducts under homes where the Patapsco had lapped at the foundation during the last nor’easter, and we’ve traced leaks through multi-zone systems in 4,000-square-foot colonials where the builder buried flex duct under twelve inches of blown insulation.
Our technicians arrive uniformed and background-checked, following The Garrison Code on every job: inside the quoted window, price written down before any tool comes out, site left clean. The 365-Day Done Right Promise covers every seal we apply. If a joint opens or a mastic application 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, seven days a week, and scheduling is coordinated from our Seattle office with local crews serving Lake Shore directly.
Duct Insulation in Lake Shore
Duct Insulation in Lake Shore addresses a problem most homeowners don’t notice until their energy bill spikes or a crawlspace inspection turns up sodden fiberglass. The humid subtropical climate here means ductwork sweats almost year-round, and when that moisture soaks into bare or degraded insulation, you’re losing thermal efficiency and creating conditions for mold.
A typical duct insulation job in Lake Shore runs $600 – $1,800 depending on linear footage, accessibility, and whether we’re replacing flood-damaged material or upgrading original installation. Homes near the water, especially the ranchers and cottages off Magothy Beach Road, often need full replacement after storm surge wicks into crawlspaces.
When Insulation Fails from the Inside
We find this most often in the 1990s colonials with heat pumps: the system runs longer cycles at lower temperatures, which keeps ducts cool enough to condense moisture if the vapor barrier is compromised. The insulation looks intact from the outside but has collapsed against the duct, creating an air gap that kills efficiency.
Flood-Damaged Material Removal
After extreme high tides or named storm remnants, we pull waterlogged insulation from under waterfront properties and install closed-cell foam or pre-formed fiberglass with a proper vapor barrier. We document the work with before-and-after photos so you see what was removed and what replaced it.
HVAC Duct Sealing in Lake Shore
HVAC Duct Sealing in Lake Shore stops the conditioned air you’re paying for from escaping into attics, crawlspaces, and wall cavities. In a typical home here, we measure 20 – 35% air loss through leaks at joints, seams, and connections before we start work. After sealing, that drops to under 5%.
The job runs $450 – $1,200 for most Lake Shore homes, with simpler single-zone ranchers at the lower end and multi-zone colonials with hard-to-reach trunk lines toward the upper. We use mastic for permanent seals on metal duct, foil tape for temporary access points, and mechanical fasteners where vibration from heat-pump air handlers would loosen adhesive-only repairs.
Heat-Pump System Considerations
Heat pumps move more air volume than gas furnaces, so leaks that might go unnoticed with a furnace become obvious when the backup strip heat kicks on every January cold snap. We pressure-test the full system and mark every leak with a numbered flag so you can follow our work.
Post-Storm Emergency Sealing
When bay water pushes into crawlspaces around Riviera Beach or Pasadena, duct connections shift and separate. We don’t just reattach; we check for corrosion from salt exposure and replace damaged sections before sealing, so the repair lasts past the next storm season.
Trusted Brands We Service in Lake Shore
Our vans carry sealing and insulation products from Aprilaire, Abatement Technologies, and Guardsman, the same filtration and duct-accessory brands specified in commercial mechanical drawings. For Lake Shore homeowners, this means no waiting on special orders when we find a failed connection or compromised trunk line. We stock mastic in multiple viscosities, foil tape rated for damp crawlspace conditions, and mechanical fasteners sized for everything from 30-gauge original sheet metal to modern flex-duct collars. If your system uses Honeywell or Aprilaire filtration components, we can inspect and reseal the filter rack while we’re in the ductwork, since a gap there bypasses your filter entirely.
Common Duct Sealing Problems We See in Lake Shore Homes
- Salt-air corrosion at metal joints. Waterfront ranchers along the Magothy and Patapsco show pinhole leaks and weakened seams where decades of salt-laden bay air have eaten at galvanized duct. We replace corroded sections and seal with mastic rated for coastal HVAC applications.
- Flood-shifted flex-duct connections. After storm surge or extreme high tide, crawlspace ducts float, kink, or pull free at the collar. We find this under homes from Lake Shore Drive to the Magothy shoreline, and we resecure with proper supports before sealing.
- Oversized duct systems leaking at every branch. The large-lot colonials built from the 1980s through the 2000s often have complex multi-zone designs with dozens of connection points. More joints mean more potential leaks, and builders in that era rarely sealed beyond a quick tape wrap.
- Heat-pump air handler vibration loosening seams. Variable-speed heat pumps cycle on and off more frequently than old gas furnaces, and that vibration works joints loose over time. We add mechanical fasteners and vibration-dampening supports where adhesive-only seals have failed.
Pricing for Duct Sealing in Lake Shore, WA
A typical whole-home duct sealing in Lake Shore runs $450 – $1,200. Single-zone ranchers with accessible crawlspaces and straightforward metal trunk lines fall at the lower end. Multi-zone colonials with buried flex duct, flood-damaged sections needing replacement, or hard-to-reach attic runs push toward the higher range.
What moves the number: linear footage of duct, number of zones and connection points, accessibility (crawlspace height, attic temperature), whether we’re sealing existing sound duct or replacing corroded or flood-damaged sections first, and whether you want full pressure-testing documentation. We give one flat price per system, agreed in writing before any work starts. No per-vent pricing, no add-ons at the door. Every job includes before-and-after photos of your actual ducts, not stock images. Call (361) 326-5060 for a free written estimate.
We Also Serve Cities Near Lake Shore
Our crews work throughout the region, and we regularly schedule Duct Sealing appointments for homeowners in Seattle, Spokane, Tacoma, and Vancouver. Dispatch is coordinated from our Seattle office, with local technicians serving each area. If you’re in Lake Shore proper or in one of these nearby cities, the same written pricing, background-checked technicians, and 365-Day Done Right Promise apply.
Serving Lake Shore, WA - Our Local Coverage Area
We’re based in the Lake Shore 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 Lake Shore
We typically schedule Lake Shore appointments within 3 – 5 business days, with flexibility for post-storm situations where flood damage has compromised ductwork. Call (361) 326-5060 for current availability.
Yes, we work from the waterfront ranches and cottages along the Magothy and Patapsco through the inland colonials off Mountain Road and around St. Jane Frances School. If your home has ductwork, we can seal it.
We prioritize calls where duct damage has left a home without functional heating or cooling, especially after coastal flooding events. Our phones are answered by a live person 24/7 to assess urgency and schedule accordingly.
Lake Shore costs run comparable to Pasadena and Riviera Beach, slightly higher than inland Spokane or Vancouver due to the corrosion and flood-repair factors common to bay-front properties. We use the same flat-price structure everywhere we work.
Every seal is covered by our 365-Day Done Right Promise in writing. If any sealed joint fails within a year, Hollis returns and makes it right at no charge, including a free second visit. This applies to all Air Duct Cleaning in Lake Shore and Dryer Vent Cleaning in Lake Shore work as well.
Ready to stop paying to heat your crawlspace? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free written estimate on duct sealing in Lake Shore. We’ll pressure-test your system, show you every leak with a numbered marker, and give you one flat price before any work starts.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Lake Shore and the greater region since 2004.