Highly Specialized Industries

Korellis is authorized to work at several nuclear facilities across the country, including Department of Energy Nuclear Weapons Processing Centers.

Wall Panels

Our team of experts installs ACM panels, corrugated panels, column covers, and custom architectural metal work. Korellis can work with the entire building envelope.

Masonry & Concrete

Korellis provides commercial masonry and concrete restoration services within Northwest Indiana and the Chicagoland area.


Korellis specializes in commercial and specialty roofing that offers unique architectural challenges.

Sheet Metal

We have an in-house sheet metal facility and onsite fabrication abilities to completely customize your project.

Service & Emergency Repair

The Korellis Service Department is available 24/7/365 for your emergency repair needs.


Korellis is the only roofing contractor vetted and approved to work in all industrial facilities in Northwest Indiana.

Steep Slope

Our steep slope roofers install high-end or custom clay, synthetic, and slate tiles on new construction projects, re-roofs, and historic structures.