About D&B Thermal

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About D&B Thermal Company

Built on Experience. Built for What’s Next.

D&B Thermal Company, Inc. has spent more than 30 years building and installing high-performance thermal envelope systems for cold storage and temperature-controlled facilities across the United States.

We’re a specialty contractor by design.

Our work focuses on the most critical components of cold storage construction — insulated metal panel systems, vapor barriers, underfloor insulation, and complete thermal envelope integration for facilities where performance matters.

From small processing facilities to large-scale processing and distribution centers, our role has always been the same: build it right so it performs long-term.

Three men stand and sit around a table, looking over large architectural blueprints. One man points at the plans while another sits with a laptop, and a third observes, all focused on the documents.
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Upgrade without disrupting operations

Expanding or Retrofitting an Existing Facility?

We support repairs, panel replacement, and thermal upgrades without disrupting operations.

Bring us in early!
Trusted nationwide

From Local Roots to National Reach

D&B Thermal was originally built serving local butchers, farms, breweries, and food producers that relied on dependable cold storage to operate. Those early projects established a reputation for disciplined installation and straightforward project management.

As our expertise expanded, so did the scale and complexity of the work.

Today, D&B Thermal supports cold storage and industrial construction projects nationwide — including freezer warehouses, food and meat processing plants, pharmaceutical environments, and large distribution facilities.

While the size of our projects has grown, our approach hasn’t changed.

We believe in:

Clear communication

Detail-driven execution

Accountability from start to finish

Long-term client relationships

Built on discipline

Our Leadership

A smiling man sits on wooden stairs inside, petting a tan and white dog that stands in front of him. The man wears a brown jacket and blue jeans, and the background features black iron stair railings.

Warren Jefferis

Founder

Every strong company begins with conviction.

In 1995, Warren Jefferis launched D&B Thermal from a second-floor bedroom beside his daughter Briana’s room — the origin of the name “Daddy & Briana.” What started as a one-man operation grew steadily into a respected thermal construction firm built on discipline, craftsmanship, and long-term client trust.

Over the next three decades, Warren scaled the company with intention. He built experienced field crews, mentored project managers, and implemented structured systems that elevated both installation quality and operational efficiency. D&B Thermal became known for executing complex design-build projects and delivering dependable solutions within the cold storage and thermal construction industry.

In 2025, Warren transitioned ownership to three longtime employees, securing the company’s future while remaining actively involved as Founder and Consultant on key projects nationwide.

The foundation he built continues to guide how D&B Thermal operates today — with clarity, accountability, and a commitment to getting it right the first time.

  • A woman with dark hair, wearing a black jacket and jeans, stands leaning on a wooden table in a bright room with exposed wooden beams and white walls. She has visible tattoos on her hands and is smiling gently at the camera.

    Briana Wight

    President | Partner
  • A man with a shaved head and beard, wearing a dark plaid shirt, stands behind a wooden desk in a bright room with exposed beams and wooden floors, smiling at the camera with arms resting on the desk.

    Corey James

    VP of Construction | Partner
  • A man with curly brown hair and a beard, wearing a dark long-sleeve shirt, sits smiling at a wooden desk in a bright room with exposed wooden beams and hardwood floors.

    Jim Rosato

    Director of Construction | Partner
  • A woman with long brown hair, wearing a black sweater, sits at a wooden table in a bright room with wooden beams, white walls, and wooden doors, smiling at the camera.

    Angela Arehart

    Controller
  • A man with short hair and a beard, wearing a black t-shirt and glasses on his head, sits at a wooden counter in a bright room with wooden beams and light-colored floors.

    Brian Shepker

    Senior Project Manager
Growing stronger while staying grounded

A New Chapter of Growth

D&B Thermal has entered a new phase of leadership and partnership, expanding its design-build capabilities while continuing the legacy established over the past three decades.

This next chapter allows us to:

  • Support larger and more complex cold storage construction projects
  • Enhance design-build efficiency for clients
  • Maintain the disciplined installation standards we’re known for
  • Continue building long-term relationships across the industry

We are evolving with our clients and with the cold chain industry itself — while staying grounded in the principles that built our reputation.

Aligned with Your Business

Industry Affiliations & Standards

D&B Thermal maintains active involvement with leading cold chain and controlled-environment construction organizations:

  • Logo for the Global Cold Chain Alliance featuring a blue circular icon with a white abstract design next to the organization’s name in bold black and gray text.
  • Logo for the Controlled Environment Building Association (CEBA) with “CEBA” in blue letters, yellow horizontal lines in the letter E, and gradient blue bars underneath.

These affiliations keep our team aligned with current best practices in cold storage construction, food-safe facility design, and high-performance thermal envelope systems.

Reliable, disciplined execution

What Clients Can Expect

When working with D&B Thermal, clients can expect:

  • Technical confidence
  • Structured project management
  • Proactive problem-solving
  • Clear communication
  • Reliable execution

We understand the risks involved in temperature-controlled construction and approach every project with the discipline required to manage them effectively.

Looking Ahead

We’re Ready to Begin

Cold storage and controlled-environment construction continues to evolve as demand grows across food production, distribution, and pharmaceutical sectors.

D&B Thermal is positioned to support that growth — partnering with developers, owners, and contractors nationwide to deliver facilities that perform today and well into the future.

Thermal envelope mistakes are expensive to fix after construction. We help teams get it right from the start.

Let’s Get Started