Compare the highest-rated insulation professionals in Knoxville, Tennessee. All contractors are licensed, insured, and verified through our rigorous screening process.
A locally owned and operated branch of a national brand, known for its focus on energy efficiency and thorough home assessments. They emphasize educating homeowners on the best solutions for their specific needs and budget, offering both cellulose and fiberglass blown-in insulation as well as spray foam.
A well-established local contractor with a strong presence in East Tennessee. They are highly regarded for their expertise in attic services, including radiant barrier installation, which is particularly effective for Knoxville's hot summers. They offer free estimates and are known for professional crew conduct.
While their name highlights crawl spaces, this provider offers a comprehensive suite of insulation services for the entire home. Their expertise in moisture control and basement/crawl space encapsulation makes them a top choice for tackling insulation challenges in the foundation areas of a home, which is critical in Tennessee's climate.
The insulation market in Knoxville is robust and competitive, driven by the city's humid subtropical climate with hot summers and cool winters, making energy efficiency a year-round concern for homeowners. The market features a mix of long-standing local specialists and franchises of national brands. Quality is generally high among the top-tier contractors, with a strong emphasis on building science principles like air sealing to complement insulation. Competition is healthy, which benefits consumers through competitive pricing and a focus on customer service. Typical pricing can vary significantly based on the project scope and material. For example, blown-in attic insulation can range from **$1,500 to $4,500**, while spray foam for the same area can range from **$3,500 to $7,500+**. Full basement or crawl space encapsulation projects are more complex and typically start around **$5,500 and can exceed $15,000**. Many providers offer free estimates and are knowledgeable about local building codes and potential rebates from the Tennessee Valley Authority (TVA) or other energy efficiency programs.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Knoxville regulations and climate
Get answers to common questions about insulation services in Knoxville, Tennessee.
For Knoxville's humid subtropical climate with hot summers and cool winters, a combination of air sealing and high-performance insulation is key. We typically recommend spray foam for its superior air barrier and moisture resistance in attics and crawl spaces, or blown-in cellulose/fiberglass for existing wall cavities. Properly addressing air leaks is as crucial as the R-value to combat both summer humidity and winter drafts common in East Tennessee.
For a standard 1,500 sq ft attic in Knoxville, adding or upgrading to blown-in insulation (R-38 to R-60) typically ranges from $1,500 to $3,500, depending on material and accessibility. Locally, KUB (Knoxville Utilities Board) often offers rebates for insulation upgrades, and Tennessee may have periodic energy efficiency tax incentives. Always ask your local contractor about current utility-sponsored programs to offset costs.
While insulation can be installed year-round, the ideal times in Knoxville are late spring (April-May) and early fall (September-October). These periods typically offer milder temperatures, making it easier for contractors to perform thorough air sealing and for homeowners to schedule before the peak summer cooling or winter heating demands hit. Avoid the height of summer attic heat for crew safety and comfort.
Choose a licensed, insured contractor with specific experience in Knoxville's older home stock and humidity challenges. Verify they perform a comprehensive energy audit or assessment first. Look for local companies familiar with KUB's programs and Tennessee's building codes, and always check for positive reviews on local platforms and membership in organizations like the Tennessee Association of Building Inspectors.
For our region's high humidity, insulating and encapsulating the crawl space walls (with a proper vapor barrier and dehumidification if needed) is now the recommended best practice over insulating the floor. This method helps prevent cold floors in winter, reduces moisture migration that leads to mold and wood rot, and improves overall energy efficiency more effectively for Tennessee's climate.