Crowther specializes in metal roof retrofit and recovery systems, providing cost-effective solutions for aging or leaking metal roofs without the need for a full tear-off. Serving the Chicagoland area for decades, we’ve helped building owners extend the life of their existing metal roof systems with proven, high-performance retrofit assemblies.

Our typical approach involves installing tapered flute fillers within the ribs of the existing metal roof to create a smooth, properly sloped substrate. From there, we install a high-density cover board and a fully adhered single-ply membrane system—typically EPDM or TPO—delivering a watertight, energy-efficient roofing system complete with a new manufacturer-backed warranty.

In addition to the roofing system, Crowther addresses all critical edge and drainage components. This includes replacing edge metal, gutters, and downspouts, as well as installing new wood blocking and accessories to ensure the system performs as a complete, integrated assembly.

A metal roof retrofit is often a more economical and less disruptive alternative to full replacement, minimizing tear-off, reducing landfill waste, and allowing operations within the building to continue with minimal interruption. Backed by decades of field experience, Crowther delivers retrofit solutions that combine durability, performance, and long-term value.