From The Diamond Certified Resource:
Few roofing contractors earn the prestigious Diamond Certified award, which means they’ve been independently rated Highest in Quality and Helpful Expertise. Even fewer also have a service record that spans four decades, but that’s exactly the case for Capstone Roofing, Inc. “I learned the roofing trade from my father—he’d take me to jobsites when I was a kid, and by the time I was 15, I was helping with installations,” says owner Nathan DuCharme. “He started this company in 1989, and I took over in 1999 so I could carry on the tradition of providing our clients with high-quality roofing work.”

Capstone Roofing installs all types of residential and commercial roofing systems for clients in Napa, Sonoma, and Marin Counties. The company maintains two crews of experienced technicians so it can complete jobs as efficiently as possible, and its knowledgeable consultants walk clients through the roofing process to make sure they get systems that meet their needs.

Unlike less experienced roofing contractors whose lack of training or equipment forces them to extend projects past the agreed-upon timelines, Capstone Roofing has the in-house capabilities to complete jobs quickly—usually in just one day. “There aren’t many roofing companies that can finish an entire job in one day, but we utilize our large crews to get it done,” says Mr. DuCharme. “We like surprising our clients by making it seem like we were never there. They come home from work and we’re already gone, but they have a brand-new roof.”

Ultimately, Mr. DuCharme sees his dedicated employees as one of Capstone Roofing’s most important attributes. “More than half of our employees have been with us for at least 15 years, which means our crew members have good long-term working relationships,” he says. “We don’t have any problems with quality control because we’ve all been working together for so long. Everyone knows what they’re doing and works well together.”