Frontier Builders Awarded Several Reroofing Projects Frontier Builders | March 6, 2023 Frontier Builders recently added three Fox Valley area reroofing projects to its construction schedule. They include: – Tri-County Machining – 20,000 sq. ft. – Roberts Flooring – 40,680 sq. ft. – Diamond Water – 7,665 sq. ft. The projects are scheduled to get underway in the spring.