Your Trusted Commercial Roofing Experts in Fox Valley

Commercial roofs present unique challenges and complexities. We have mastered the art and
science of delivering durable, long-lasting solutions that withstand the test of time. Our goal is no surprises. We believe in open communication, transparency, and keeping you informed throughout every step of the process.

Call for Custom Support
Mon-Fri: 9AM-5PM

Commercial roofing examples

Our Services


  • Flat Roof Replacement
  • 15-30 year warranties with a 50 year available
  • 30+ Years of Experience in Commercial


  • Shingle Roof Replacement
  • 7-20 year non-prorated warranties
  • Prorated limited lifetime warranty on shingles.
  • Certified Contractors
3 Girls in light blue uniforms at a rustic school


  • Emergency Roof Repair
  • General Repair
  • Commercial & Residential

Our Products

We partner with the best material manufactures in the industry so we can provide the highest quality and longest lasting roofs available. If it’s not the best, it’s not good enough for your roof!

Duro-last layers

Exclusive contractor


We have over 33 years installing Duro-Last commercial roof systems. Each roof is custom fabricated to fit your roof which reduces seams, waste, and saves on labor. Duro-Last is the most environmentally friendly roofing material and has one of the best warranties in the industry.

“Steve Warner and his team have been great to work with. They know what they are doing, they show up when they say they will, and best of all they stand behind their work”

Shawn Whitworth

Pastor, The Mission Church

Residential – Emerald Pro Certified


We are also an Emerald Pro Certified installer of Malarkey residential roof systems. Malarkey Roofing Products are the makers of the industries strongest, most durable and highly sustainable shingles on the market, made of Upcycled Rubber & Plastics to reduce landfill waste, and offered with different warranty options to suit your needs.

The entire process of getting our roof replaced due to storm damage was easy with Warner. Once we contacted them, they walked us through the entire process.

Shannon Skaletski


duro-last commercial roof
Malarkey Roofing Products
GAF layers
Warner Team

About Warner Roofing

Warner Commercial Roofing, LLC, founded by Steve Warner in 1997, is a family owned and operated company with deep roots in Northeast Wisconsin. Steve began his career in roofing under the tutelage of his father and soon ventured out on his own.

With over 30 years of experience in the industry, Warner has built a strong reputation for delivering cutting edge technology, long lasting, and proven superior quality roofing.

Steve has built a team of master craftsmen around him to continue and expand the impact on small and medium business. Nevertheless, he is personally involved in every install to assure 100% customer satisfaction.
The purpose behind our pursuit of excellence is defined as “Raise the Roof!” We are committed to elevating the roofing industry, the reputation of roofers, and those alongside us to better heights.

We proudly invest our time and talent in mission-based projects in Northeast Wisconsin, Mexico, Haiti, and Costa Rica.

Start building for free

Contact Warner Commercial Roofing for a free quote