Founded in 1960 this second-generation family business has grown into the largest professional roofing company in Northwest Indiana with a reputation for quality construction. An impressive three-acre yard, which is guarded by four five-foot gargoyles, and office complex is housed in Hammond, Indiana, and serves many of the leading businesses locally and the Chicagoland area. Korellis employees a staff of over 100, operates a service fleet, and manages a computerized, start-of-the-art sheet metal shop, which fabricates and customizes most architectural metals.

Korellis Roofing can provide all professional roofing services for the commercial, industrial, municipal, and residential markets. These services include: roof replacement, new construction, repair, and maintenance to full-service roof management.