Duct Sealing in Davis - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Davis

We seal ducts in Davis homes where the summer AC runs hard from May through October and the valley oak canopy drops acorns straight through old floor registers. Our crews dispatch from the Sacramento office and carry mastic, mesh, and negative-air gear for the corrosion-prone galvanized steel trunk lines common in 1960s – 1980s ranch houses throughout Davis. Call (361) 326-5060 for a free estimate. We’ll give you a written price before any work starts, and every repair is covered by our 365-Day Done Right Promise.

Call (361) 326-5060

Why Hollis Air Duct Cleaning Is Davis’s Preferred Duct Sealing Company

We’ve been sealing ducts in Davis since 2004 as part of the Garrison Partners family, and we’ve learned what fails here. The combination of original galvanized steel ductwork, agricultural dust from unpaved rural roads, and heavy summer cooling loads creates a specific repair profile that generic crews miss.

Our technicians are background-checked and uniformed, and they arrive inside the quoted window. The price is written down before any tool touches your system. If the seal fails within a year, we return and make it right at no charge, including a free second visit. That’s The Garrison Standard, and it’s how we operate in Davis.

Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues.

Duct Sealing Services in Davis

Duct Sealing Services in Davis address the leaks, gaps, and corroded seams that let conditioned air escape into attics, crawl spaces, and wall cavities. A typical whole-system duct sealing job in Davis runs $1,200 – $2,800 depending on the size of the home, accessibility of the trunk lines, and whether we’re working with original galvanized steel or newer flex duct. Most Davis ranch and duplex jobs fall in the $1,500 – $2,200 range. We use mastic and fiberglass mesh on metal seams, aerosol sealant for hard-to-reach flex runs, and negative-air verification to confirm the seal holds under pressure.

Leak Detection and Pressure Testing

We pressurize your duct system and measure airflow loss at each register and return. In Davis’s older ranch homes, we regularly find 20 – 35% leakage at corroded galvanized trunk seams and torn takeoff boots. The test gives us a baseline and proves the fix afterward.

Boot and Trunk Resealing

Original takeoff boots in Davis’s 1960s – 1980s housing have often cracked or pulled loose from decades of thermal cycling. We cut the boot free, clean the mating surface, and reseal with mastic rated for the temperature swings your attic sees in a Davis summer.

Duct Insulation in Davis

Duct Insulation in Davis matters because attic temperatures in July and August regularly hit 140°F, cooking any air moving through uninsulated metal trunk lines. A typical duct insulation job in Davis runs $800 – $1,800 for wrapping accessible trunk and branch lines with R-6 or R-8 foil-faced fiberglass. Homes with long attic runs, like the sprawling ranches common in South Davis and near the university, tend toward the higher end. We use Guardsman and Abatement Technologies insulation products, sealed at every seam to prevent the foil facing from delaminating in the heat.

Attic Trunk Wrap and Vapor Barrier

We wrap exposed galvanized trunks with foil-faced fiberglass and seal the seams with aluminum tape rated for high-temperature exposure. In Davis’s dry summer climate, the vapor barrier faces inward to prevent condensation on the cool duct surface during shoulder seasons.

Crawl Space and Under-Floor Runs

Davis’s mild, wet winters can push humidity into crawl spaces. We insulate under-floor runs with closed-cell sleeve insulation where ground moisture is present, keeping the duct surface above dew point and preventing the mold and mildew that thrive in damp fiberglass.

Trusted Brands We Service in Davis

We stock parts and materials from Rotobrush, Nikro, Abatement Technologies, and Guardsman for Davis jobs. That means no waiting on Sacramento supply houses for mastic, mesh, insulation sleeve, or register boots. Our van inventory covers the common galvanized trunk diameters and takeoff sizes found in Davis’s mid-century housing stock, so most sealing and insulation jobs start and finish in one visit.

Common Duct Sealing Problems We See in Davis Homes

• Corroded galvanized trunk seams in 1970s ranches. The original steel has thinned from decades of condensation and temperature cycling. Mastic alone bridges the pinholes but can’t stop the metal from flexing and reopening. We verify seam integrity first, then reinforce with mesh before sealing.
• Torn takeoff boots feeding rear bedrooms. Common in the long, low-slung ranches near Davis’s eastern edge. The boot cracks where it meets the trunk, dumping conditioned air into the attic. We replace or reseal the boot and verify airflow at the register.
• Dust loading from unpaved rural roads and agricultural burns. Properties on the outskirts of Davis pull fine particulate through every gap in the duct envelope. Sealing without first removing that debris locks it inside the system, where it feeds the blower motor and coats the evaporator coil.
• Loose oak-set floor registers in Old North Davis and East Davis. The original plates sit flush in hardwood floors and work loose over decades. We lift, seal the boot connection, and reset with protective shims so the plate doesn’t scratch or rattle.

Pricing for Duct Sealing in Davis, CA

We Also Serve Cities Near Davis

Our crews regularly travel from the Sacramento office to seal ducts in Davis, Dixon, Woodland, West Sacramento, and Winters. The same written pricing, same 365-Day Done Right Promise, same background-checked technicians at every stop.

FAQs About Duct Sealing in Davis