
Cape Girardeau Insulation Company serves Kennett and Dunklin County with crawl space insulation, vapor barriers, attic blown-in, and spray foam. We respond within 1 business day and provide free written estimates with no obligation.

Kennett sits in Dunklin County, one of Missouri's southernmost and most humid counties, and homes with open crawl spaces pay the price every summer. Our crawl space insulation service addresses both the thermal performance and the moisture load in one project, so your floors are warmer in winter and the space below is not a humidity trap in summer.
Kennett's clay-heavy soil and heavy spring rains push ground moisture into crawl spaces year after year. A vapor barrier on the crawl space floor stops that moisture cycle before it reaches the floor joists and subfloor — protecting wood, reducing mold risk, and keeping the insulation above it dry and effective. This is the first fix we recommend for most older Kennett homes.
Kennett receives significant summer heat — highs in the low 90s are common from June through September — and attics with thin or compressed insulation transfer that heat directly into the living space. Blown-in insulation fills the full attic floor to the recommended depth for this climate zone, covering irregular spaces and corners that batt rolls miss, and it can be installed in a few hours without major disruption.
For rim joists and crawl space walls in Kennett's older brick and wood-frame homes, closed-cell spray foam creates a permanent seal against both air and moisture. Homes from the 1950s and 1960s near downtown Kennett frequently have gaps at the rim joist where outside air enters freely. Spray foam eliminates those gaps and adds a moisture barrier that no other product matches.
In older Kennett homes, decades of freeze-thaw cycling and wood movement open up gaps around plumbing penetrations, electrical fixtures, and attic hatches. Air sealing those openings before adding insulation is what separates an effective upgrade from a partial fix. Without it, conditioned air escapes and outside humidity finds its way in through paths that insulation alone cannot block.
Kennett is one of the southernmost cities in Missouri, and the climate reflects it. Dunklin County sees some of the hottest, longest summers in the state, with July highs regularly reaching the low 90s and humidity that makes it feel worse. Winters bring real cold, with temperatures dropping into the 20s and freeze-thaw cycles that crack concrete and shift foundations on the area's clay-heavy soil. That two-season stress on residential structures is hard on homes built before modern energy codes, and most of Kennett's housing stock falls into that category.
The Bootheel's flat terrain and clay-heavy soil create moisture conditions that differ from most of the rest of Missouri. After heavy spring or summer rain, water does not drain away from foundations quickly. It lingers in the soil, pushing moisture upward into any crawl space that lacks a vapor barrier. Homes near downtown Kennett with older brick or wood-frame construction often have crawl spaces with no vapor protection at all, which means decades of moisture exposure to the floor structure. Addressing this is not optional for homeowners who plan to stay in their home long-term.
We work on homes throughout Dunklin County and are familiar with what the housing stock in and around Kennett actually looks like. The older brick homes near the Dunklin County Courthouse downtown are built differently than the vinyl-sided wood-frame homes on the outskirts of town — and both differ from the manufactured homes and larger-lot properties at the edge of the city. We bring the right approach for each type rather than a one-size-fits-all solution.
Kennett is the commercial hub for a wide area of southeast Missouri, and Highway 412 runs through the center of town connecting the established in-town neighborhoods to the growing edges. Most of the homes we work on in Kennett are owner-occupied, long-term residences where the homeowners have lived for years and know exactly what their home needs. They are not looking for the cheapest option — they want the work done right so they do not have to deal with the same problem again in five years.
We also serve the surrounding Bootheel region, including Cape Girardeau, MO to the northeast and Dexter, MO to the north — both of which share the same climate and soil conditions that make moisture control so critical throughout this corner of Missouri.
Tell us the age of your home and what has you concerned. We reply within 1 business day and schedule a free assessment visit at your convenience.
We visit your home and inspect the crawl space, attic, and any other areas of concern. For Kennett homes, we always check moisture conditions in the crawl space before recommending insulation above it. This visit takes 30 to 60 minutes.
You receive a written breakdown of what we recommend, why, and what it costs. We separate what is essential from what is optional and give you time to compare before making a decision.
Most Kennett jobs are completed in a single day. We walk you through the finished work and provide written documentation of what was installed — useful for any applicable federal tax credits.
We serve Kennett and Dunklin County. Free estimates, no surprise pricing, and a crew that knows the Bootheel.
(573) 381-9088Kennett is the county seat of Dunklin County, located in the southernmost reach of the Missouri Bootheel near the Arkansas border. The city has a population of around 9,500 and serves as the main commercial, medical, and government center for the surrounding region. Its downtown is anchored by the historic Dunklin County Courthouse and a cluster of local businesses along the main square. Most of the housing stock consists of single-family homes, with a mix of older brick construction near downtown and wood-frame homes with vinyl siding on the city's edges. You can read more about the area on the Kennett, Missouri Wikipedia page.
Agriculture shapes Kennett's economy and identity — cotton, rice, and soybeans are grown throughout the surrounding county, and many residents have worked in or around farming for generations. Home values in the area run below the state average, and the owner-occupancy rate is high, which means most homeowners are thinking about long-term investments rather than quick fixes before a sale. We serve Kennett and the surrounding communities, including Poplar Bluff, MO to the northwest and Sikeston, MO to the northeast.
Seals gaps and cavities with expanding foam for superior air and moisture control.
Learn moreKeeps your home comfortable year-round by insulating the attic floor or rafters.
Learn moreLoose-fill insulation blown into walls, attics, and hard-to-reach spaces.
Learn moreInsulates and conditions your crawl space to prevent moisture and heat loss.
Learn moreImproves thermal performance and noise reduction in interior and exterior walls.
Learn moreSeals drafts and air leaks throughout the building envelope for better efficiency.
Learn moreInsulates basement walls and rim joists to reduce energy loss below grade.
Learn moreHigh-density foam providing the highest R-value per inch with vapor resistance.
Learn moreLightweight foam ideal for interior applications, sound dampening, and tight spaces.
Learn moreProfessional insulation services for commercial and industrial buildings.
Learn moreHeavy-duty plastic sheeting that blocks ground moisture from entering the crawl space.
Learn moreInstalls moisture barriers in walls, floors, and crawl spaces to prevent condensation.
Learn moreTargets attic bypasses and penetrations to stop conditioned air from escaping.
Learn moreUpgrades insulation in existing homes without major demolition or disruption.
Learn moreKennett homes face real Bootheel moisture and heat. Call us today and we will visit your home, assess the crawl space and attic, and give you a written estimate at no charge.