Building Better Spaces Since 1948

For more than 75 years, Bonham Insulating Company has helped homeowners, builders, and businesses throughout Upstate South Carolina insulate buildings that are more comfortable, more energy efficient, and design to perform for years to come. What began as a local insulation contractor in Spartanburg has grown into one of the region's most trusted insulation specialists—earning that trust one project, one customer, and one recommendation at a time.

Today, Bonham continues that tradition by combining decades of experience with modern insulation solutions that improve the entire building envelope. Whether we're insulating a new commercial facility, upgrading an existing home's attic, or helping solve moisture, comfort, or energy-efficiency challenges, our focus remains the same: deliver the right solution—not simply the most insulation.

Discover the Bonham Difference

More Than Insulation

At Bonham, we believe insulation should do more than fill a wall or attic.

A properly insulated building is cleaner, healthier, quieter, more comfortable, and significantly more energy efficient. That's why we approach every project with a whole-building mindset, helping customers understand how insulation, air sealing, moisture control, and proper installation work together to create lasting performance.

Rather than recommending products based on a one-size-fits-all approach, we take the time to understand each building's unique needs and recommend solutions that deliver long-term value.

Leadership Rooted in Experience

Today, Bonham Insulating Company is led by owner Kevin Crowley, who continues the company's long-standing commitment to quality workmanship, honest recommendations, and exceptional customer service.

Kevin believes every project starts with listening. Whether he's meeting with a homeowner looking to improve comfort and lower energy bills, working alongside builders on new construction, or helping commercial clients solve complex insulation challenges, his focus is always the same: provide practical guidance that delivers the best long-term outcome—not simply sell more insulation.

That customer-first philosophy has become a defining part of Bonham's reputation. Many of our customers specifically recognize Bonham for its responsiveness, expertise, and willingness to educate them throughout the process, helping them make informed decisions with confidence.

As Bonham continues to grow, the team remains committed to preserving the values that have guided the company for more than seven decades: integrity, craftsmanship, and treating every customer like a neighbor.

Experience You Can Trust

With more than seven decades of experience, we've seen building practices, products, and energy standards evolve—and we've evolved with them.

Our team serves residential and commercial customers throughout Upstate South Carolina, providing insulation solutions for:

• New construction
• Existing homes
• Commercial buildings
• Renovations and remodels
• Attics
• Walls
• Floors
• Crawl spaces
• Air sealing
• Radiant barriers
• Fire-resistant insulation solutions
• Sound attenuation
• Insulation upgrades

By combining proven installation methods with high-quality materials, we help customers maximize comfort, reduce energy waste, improve indoor air quality, and protect their investment.

Our Commitment

Every recommendation we make is built around one simple philosophy:

Do what's right for the customer.

That means providing honest assessments, practical recommendations, quality workmanship, and clear communication from the first conversation through project completion. We believe the best projects begin with trust, and we work hard to earn that trust every day.

Our goal isn't simply to complete another insulation project—it's to help every customer create a building that performs better, feels better, and costs less to operate over time.

Proudly Serving Upstate South Carolina

From our headquarters in Spartanburg, Bonham Insulating Company proudly serves homeowners, builders, contractors, and businesses throughout Upstate South Carolina and the surrounding region.

Whether you're building from the ground up, renovating an existing property, or looking to improve comfort, energy efficiency, moisture control, or indoor air quality, our team is ready to help you find the right solution for your project.

For over 75 years, Bonham has earned its reputation through honest advice, dependable workmanship, and a commitment to doing what's right for every customer. We look forward to helping you build a cleaner, healthier, and more comfortable space.

Ready to Build a Better Building?

Whether you're planning new construction or upgrading an existing home or commercial property, Bonham Insulating Company provides the experience, knowledge, and trusted service to help you improve comfort, efficiency, and long-term performance.

Contact us today for a free consultation