"Since 1948"
Bonham Insulating Company has proudly served homeowners and businesses in and around Spartanburg for more than 70 years.
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Professional Insulation Services in Spartanburg County, SC
As one of the most established insulation contractors in Spartanburg County, SC, Bonham Insulating Company has helped homeowners, builders, and businesses stay comfortable since 1948. From attic upgrades in older neighborhoods to insulation for new homes and commercial projects, our Spartanburg-based team delivers reliable installation, honest recommendations, and lasting energy efficiency for every building we work on.
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Residential & Commercial Insulation in Spartanburg County
Bonham Insulating has been headquartered on Springfield Road in Spartanburg for more than 75 years, and our work covers nearly every type of building in the county. For existing homes, we evaluate what's in your attic, walls, floors, and crawl space, then add or replace insulation to bring comfort and efficiency up to today's standards. During renovations and remodels, we work around your contractor's schedule to insulate open walls and ceilings while they're accessible.
For new construction, builders across Spartanburg County rely on us for code-compliant insulation packages delivered on schedule so inspections and drywall stay on track. And for commercial properties, including schools, medical offices, and small businesses, we provide insulation, air sealing, and sound control that supports occupant comfort and controls operating costs.
Every project follows the same organized process: a clear assessment, a written recommendation, a prepared and protected work area, installation by background-checked crews, and a final walkthrough with full cleanup.
Our Insulation Services in Spartanburg County
Attic Insulation
Your attic has the biggest impact on comfort and energy bills. We top off thin or compressed insulation, replace damaged material, and install new attic insulation to recommended R-values for the Upstate climate.
Wall Insulation & Floor Insulation
Insulated walls and floors reduce drafts, cold floors, and room-to-room temperature swings. We insulate exterior walls in new builds and remodels and add floor insulation over crawl spaces and unconditioned areas.
Crawl Space Insulation
Crawl space insulation and moisture barriers help keep humid air, musty odors, and cold floors out of your living space while protecting framing from moisture and mold.
Blown-In Fiberglass Insulation
Loose-fill fiberglass is blown into attics and enclosed cavities for even, gap-free coverage around wiring, ductwork, and irregular framing. It's one of the most efficient ways to add insulation to an existing home.
Batt Insulation
Fiberglass batts are a proven, cost-effective choice for new construction, open walls during remodels, and accessible attics and floors with standard framing.
Air Sealing
Insulation works best when air leaks are sealed first. We seal gaps around attic penetrations, top plates, and other leak points so conditioned air stays inside and your insulation performs as rated.
Sound Attenuation
Sound control insulation reduces noise between bedrooms, bathrooms, media rooms, offices, and shared commercial walls for quieter, more private spaces.
Commercial Insulation
From new commercial buildings to upgrades of existing facilities, we provide insulation, air sealing, and sound control for offices, schools, medical facilities, and other Spartanburg County businesses.
Insulation Solutions for Spartanburg's Homes and Businesses
Spartanburg County summers are long, hot, and humid, and an under-insulated attic can climb well above 150°F on a sunny afternoon. That heat radiates down into upstairs rooms and forces your air conditioner to run longer. When temperatures swing in spring and fall, and dip in winter, the same gaps let heated air escape through the ceiling. Proper attic insulation and air sealing slow that heat transfer in both directions, so your HVAC system doesn't have to work as hard to keep every room comfortable.
Crawl space moisture is another common issue here. Humid Upstate air can lead to condensation, damp or sagging insulation, musty odors, and cold floors. Crawl space insulation paired with a moisture barrier helps protect the structure and improve indoor air quality.
Older homes, including historic mill-village houses and mid-century neighborhoods throughout the county, often have little or no wall insulation and attic insulation that has settled over decades. These homes usually benefit most from air sealing and blown-in insulation that can be added without major demolition. New construction, on the other hand, is about getting it right from the start: correctly installed insulation that meets current energy code and passes inspection the first time.
In both cases, the goal is the same: a more comfortable home or building with lower, more predictable energy bills and less unnecessary heating and cooling demand.
Communities We Serve Throughout Spartanburg County
From our headquarters in Spartanburg, Bonham Insulating serves homeowners, builders, and businesses across the county, including:
- Spartanburg
- Boiling Springs
- Inman
- Duncan
- Lyman
- Wellford
- Woodruff
We also serve the surrounding Upstate, including Greer, Greenville, Union, and Cherokee County. Not sure if we cover your area? Call us at 864-585-5361.
Why Choose Bonham Insulating in Spartanburg County?
- More than 75 years of local experience. Bonham has been insulating Spartanburg-area homes and businesses since 1948 and is led today by owner Kevin Crowley.
- Vetted, background-checked installers. Our crews are trained in proper installation methods and treat your property with care.
- Clean, organized job sites. We protect floors, seal off work areas, and leave your space clean when the job is done.
- Residential and commercial capabilities. One team for existing homes, remodels, new construction, and commercial buildings.
- Honest recommendations. If your current insulation is performing well, we'll tell you. Our philosophy is simple: do what's right for the customer.
- BBB-accredited. A long track record of trusted service in the Upstate.
What Spartanburg customers say:
"The owner came out to my house to inspect my attic. He recommended blowing additional insulation into the attic space. His team was able to blow it in without any trouble, they were neat, nice, and professional. And the best part? I noticed an immediate difference in how much my AC was running. And when I got my power bill, I noticed it there, too." – Clayton, Spartanburg, SC
"They responded quickly to an inquiry we put in regarding insulation at my office and quickly helped us identify and resolve the problem. Responsive, professional and a great group of folks to work with." – Charles, Spartanburg, SC
Spartanburg County Insulation FAQs
- How do I know if my Spartanburg home needs additional insulation?
Common signs include upstairs rooms that are hot in summer or cold in winter, energy bills that keep rising, an AC that seems to run constantly, cold floors, and attic insulation that looks thin, uneven, or compressed. If you can see the tops of your attic floor joists, you likely need more. A free consultation from Bonham will measure your current insulation levels and tell you whether an upgrade makes sense.
- What type of insulation is best for older homes in Spartanburg County?
It depends on the home's construction and condition, but many older homes benefit most from air sealing combined with blown-in insulation in the attic. Blown-in material fills irregular framing and can be added over existing insulation. Crawl space insulation and moisture barriers are also common needs. We'll inspect your home and recommend the option that fits its structure and your goals.
- Can adding attic insulation help reduce summer cooling costs?
Yes. In Spartanburg's hot summers, the attic is the main source of heat entering your living space. Adding insulation and sealing air leaks reduces the heat that reaches your ceilings, so your air conditioner runs less and rooms stay more comfortable. Results vary by home, but the attic is usually the highest-impact place to start.
- Does Bonham provide insulation for new construction in Spartanburg County?
Yes. We work with builders, contractors, and homeowners on new residential and commercial construction throughout Spartanburg County, installing code-compliant insulation in walls, attics, and floors and coordinating with your build schedule to keep inspections on track.
- Do you offer commercial insulation services in Spartanburg?
Yes. Bonham provides commercial insulation for new buildings and existing facilities, including schools, medical offices, and small businesses. Services include wall and ceiling insulation, air sealing, and sound attenuation. Learn more about our commercial insulation services.
Request an Insulation Consultation in Spartanburg County
Whether you're fighting a hot upstairs bedroom, building a new home, or planning a commercial project, Bonham Insulating is ready to help. Our team will evaluate your property, explain what we find in plain language, and recommend only what your building needs. Call 864-585-5361 or request your free, no-obligation insulation consultation today and see why Spartanburg County has trusted Bonham since 1948.
Trust Bonham Insulating Co.
Trusted for Insulation
Bonham Insulating Company has been a trusted insulation contractor for homes and businesses in Upstate South Carolina for more than 70 years.
Areas Served
We install insulation throughout Upstate South Carolina, including Spartanburg, Union, Greenville, Greer, Anderson, Easley, Cherokee County and Laurens County.
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