Spray foam insulation
High-performance spray foam that air-seals and insulates in one application.
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Serving Kennewick, WA and surrounding areas. (509) 206-9343
Serving Kennewick, WA and surrounding areas. (509) 206-9343
Kennewick Insulation provides blown-in attic insulation, crawl space encapsulation, wall dense-pack, and vapor barrier installation to Hermiston homeowners. We have served the Columbia Basin region since 2023, working on the 1960s-through-1990s wood-frame homes that make up most of Hermiston's residential stock, as well as newer subdivisions on the city's north and west edges.
Most of Hermiston's homes from the 1960s through 1990s have attic insulation that has settled well below current code minimums, and blown-in cellulose or fiberglass is the fastest way to bring those levels back up to R-49 without major disruption. The same method fills wall cavities that were left empty at the time of construction - a common finding in wood-frame homes of this era. Learn more about our blown-in insulation services.
Hermiston's winter lows drop into the mid-20s Fahrenheit, and uninsulated crawl spaces pull that cold air directly under the living floor. Insulating between the floor joists and sealing the crawl space perimeter keeps floors warmer, shortens furnace run times, and protects water pipes from freezing during the area's hardest cold snaps.
The sandy, silty soil of the Columbia Basin - the same soil that produces Hermiston's famous watermelons - holds ground moisture that can migrate up into crawl spaces year-round. A properly installed vapor barrier at the ground surface stops that moisture before it reaches floor framing and insulation, where it promotes rot and mold over time.
Adding blown-in insulation without sealing the attic floor first is like filling a bucket with a hole in it. Hermiston homes from the 1970s and 1980s typically have dozens of small air gaps around plumbing stacks, light fixtures, and interior wall top plates that allow conditioned air to escape directly into the attic. Air sealing those gaps before adding insulation makes the R-value investment perform as designed.
Wood-frame homes in Hermiston's older in-town neighborhoods frequently have 2x4 wall cavities that were built with no insulation at all - a standard practice in much of the Pacific Northwest through the 1960s. Dense-pack blown-in installation fills those cavities from the exterior through small drilled holes, with minimal interior disruption and a noticeable improvement in how the home holds temperature on both hot summer days and cold winter nights.
Hermiston has a large stock of owner-occupied homes built between 40 and 60 years ago where owners are investing in upgrades rather than moving. Retrofit insulation - adding or replacing insulation in an occupied, finished home - is our core residential service in this market, and we are set up to do the work without damaging interior finishes.
Hermiston sits in the Columbia Basin at the junction of I-84 and US-395, in one of Oregon's most productive agricultural regions. The climate is high-desert: summer highs regularly reach 90 to 95 degrees Fahrenheit, rainfall averages under 10 inches per year, and winters bring hard freezes with January lows dropping into the mid-20s. That seasonal swing of roughly 70 degrees between summer peak and winter low is a problem for any building with thin insulation or air leaks - and Hermiston has a lot of both. Homes that are under-insulated force furnaces and air conditioners to run longer, costing homeowners money in every month with extreme temperatures.
The bulk of Hermiston's housing stock was built during the city's growth periods in the 1960s through the 1990s. The dominant type is the single-story wood-frame home with stucco or vinyl siding, often sitting on a vented crawl space. These homes were built at a time when insulation requirements were minimal - it was common to leave wall cavities empty or to install only 3 to 4 inches of attic insulation. After 40 or 50 years, even what was originally installed has settled or degraded. Hermiston's sandy, silty Columbia Basin soil adds another challenge: it holds ground moisture that migrates up into crawl spaces and floor framing when there is no vapor barrier in place, creating conditions for wood rot and reduced insulation performance even in a dry climate.
Our crew has been working on homes in Hermiston and the surrounding Columbia Basin since 2023, and the mix of housing ages we see here - postwar ranches near downtown, newer two-story homes in the subdivisions on the north and west edges of town - shapes how we approach every project. Older homes closer to downtown Hermiston typically need full attic overhauls and crawl space vapor barriers; newer homes in the north subdivisions more often need top-up work and air sealing at the attic floor. Both are different jobs requiring different setups.
Hermiston is the largest city in Umatilla County and a regional hub for eastern Oregon and southeastern Washington. The city sits near McNary Dam on the Columbia River and is known statewide for its watermelon harvest - the sandy Columbia Basin soil that grows those watermelons is the same soil under most of the city's crawl spaces. That soil drains fast in summer but retains and transmits ground moisture upward into crawl spaces in ways that are easy to miss until wood rot or mold makes itself visible.
We regularly serve homeowners across all of Hermiston and nearby communities. Jobs in Hermiston often lead us to Pendleton, OR to the southeast, and we also cover the greater Tri-Cities area including Kennewick, WA across the Columbia to the north.
We respond within 1 business day. Tell us what you are dealing with - high summer cooling bills, cold floors in January, a musty crawl space, or rooms that just never reach the right temperature - and we will schedule a free on-site visit at a time that works for you.
We inspect the attic, crawl space, and walls, measure actual insulation depth and R-values, and check for air sealing issues throughout the building envelope. You receive a written, itemized estimate at the end of the visit with no obligation to proceed.
Most blown-in attic jobs in Hermiston finish in one day. Crawl space insulation and vapor barrier work typically takes one to two days. Wall dense-pack on a full single-story home generally takes two days. We coordinate the schedule around your availability.
Before we leave, we confirm insulation depths and air sealing locations completed and walk you through all the work. You receive written documentation of materials and R-values installed, which is useful for any utility incentive programs and for future home sales.
We serve Hermiston homeowners across all neighborhoods - older in-town ranches, newer north-side subdivisions, and everything in between. No obligation. Written estimate provided on-site.
(509) 206-9343Hermiston is the largest city in Umatilla County and serves as a commercial and service hub for a wide stretch of eastern Oregon and southeastern Washington. The city sits near the junction of I-84 and US-395, just a few miles south of McNary Dam on the Columbia River. Hermiston's economy runs on agriculture and food processing - the city is well known across the Pacific Northwest for its watermelon harvest, and large food processing facilities and cold storage operations are major local employers. The residential mix reflects two distinct growth periods: the older established neighborhoods near downtown, built primarily from the 1960s through the 1980s, and the newer subdivisions on the north and west edges of the city that have gone up over the past 20 years. Most homes across both areas are single-family, owner-occupied, and wood-frame construction.
Hermiston has a population of roughly 19,000 to 20,000 people and a homeownership rate of around 60 percent, which means most residents have a long-term financial stake in keeping their homes in good shape. The city functions as a regional center - residents from smaller Umatilla County towns like Stanfield, Echo, and Umatilla come to Hermiston for services and shopping. Nearby service areas we cover include Walla Walla, WA to the northeast and Pasco, WA across the Columbia to the north.
High-performance spray foam that air-seals and insulates in one application.
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Learn moreInsulate and condition your crawl space to prevent moisture and heat loss.
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Learn moreSeal air leaks throughout your home to cut drafts and energy waste.
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Learn moreDense, moisture-resistant closed-cell foam for maximum R-value per inch.
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Learn moreHeavy-duty vapor barriers to protect crawl spaces from ground moisture.
Learn moreProfessional vapor barrier installation for crawl spaces, basements, and walls.
Learn moreUpgrade insulation in existing homes without major renovations.
Learn moreCommercial-grade insulation for offices, warehouses, and multi-family buildings.
Learn moreServing these cities and communities.
Call us today or submit a request online. We respond within 1 business day and schedule at your convenience - no pressure, no obligation.