The Best Commercial Roofing Contractor in Wisconsin
For more than 40 years, Nasi Roofing has helped Wisconsin property owners protect their investments with industry-leading roofing solutions. Headquartered in Appleton and serving customers throughout Wisconsin, Nasi Roofing, Royalty Roofing’s Wisconsin branch, has installed and warrantied more than 20 million square feet of commercial roofing while building a reputation as one of the nation’s leading Duro-Last roofing contractors.
Today, as part of the Royalty Roofing family, Nasi Roofing combines decades of Wisconsin roofing expertise with the resources, technology, and support of a national roofing organization. From commercial roof replacement and maintenance programs to residential shingle roofing services, we deliver long-lasting roofing solutions backed by proven experience and exceptional customer service.
Our Commercial Roofing Services in Wisconsin
Commercial Roof Installation
Nasi Roofing installs high-performance roofing systems for new construction projects, facility expansions, and commercial developments throughout Wisconsin. Our team works closely with property owners, facility managers, architects, and general contractors to deliver roofing systems designed for long-term durability and performance.
Commercial Roof Replacement
When a commercial roofing system reaches the end of its service life, our team develops replacement solutions that improve building performance, energy efficiency, and long-term reliability. We specialize in low-slope commercial roofing systems for industrial, institutional, and commercial facilities throughout Wisconsin.
Commercial Roof Repair
Roof leaks, membrane damage, flashing failures, and storm-related issues can quickly impact business operations. Our technicians provide responsive commercial roof repair services designed to address problems before they become costly disruptions.
Commercial Roof Maintenance & Inspections
Proactive maintenance is one of the most effective ways to maximize the lifespan of a commercial roofing system. We provide roof inspections, preventative maintenance programs, roof audits, and asset management services that help building owners make informed roofing decisions.
Residential Shingle Roof Replacement
In addition to our commercial roofing expertise, NASI Roofing provides residential roof replacement services throughout Wisconsin. Our team installs premium architectural shingle roofing systems designed to protect homes, improve curb appeal, and withstand Wisconsin’s demanding weather conditions.
Commercial Roofing Services List
- Duro-Last Single-Ply Roofing Systems
- PVC Commercial Roofing
- Custom Sheet Metal
- Standing Seam Metal Roofing
- Gutters and Downspouts
- Rooftop Repairs and Retrofits
- Steep-Slope Roofing
- 24/7 Service
- Rooftop Management and Maintenance Programs
Residential Roofing Services
- Shingle Roofing Repair & Replacement
Commercial jobs we’ve completed in Wisconsin
- Advance Auto Parts
- Taco Bell
- Holiday Apartments
- McDonalds
- Love's Travel Stop
- Maple Leaf Farms
- Lake Geneva Family Restaurant
Commercial Roofing Systems We Install
Duro-Last PVC Roofing Systems
PVC roofing systems provide outstanding resistance to weather, chemicals, grease, and rooftop contaminants. These systems deliver superior durability and are commonly selected for facilities requiring long-term performance and low maintenance costs.
TPO Roofing Systems
TPO roofing systems offer excellent energy efficiency, reflective properties, and dependable waterproofing performance. These single-ply systems are a popular solution for commercial facilities seeking cost-effective long-term protection.
EPDM Roofing Systems
EPDM roofing systems have been trusted by commercial property owners for decades. Known for their durability and proven performance, EPDM membranes provide reliable protection for a wide variety of low-slope commercial roofing applications.
Commercial Metal Roofing
Commercial metal roofing systems offer exceptional longevity, weather resistance, and energy efficiency. Metal roofing is commonly selected for industrial facilities, warehouses, manufacturing plants, and commercial buildings requiring a durable, low-maintenance roofing solution.
Architectural & Commercial Shingle Roofing
For residential and steep-slope applications, NASI Roofing installs premium architectural shingle roofing systems designed to provide long-lasting protection and enhanced curb appeal.
Why Wisconsin Businesses Choose NASI Roofing
For more than 40 years, Nasi Roofing has helped businesses, municipalities, schools, healthcare organizations, and property owners protect their facilities with dependable roofing solutions. Our experience, manufacturer certifications, and commitment to quality have made us one of Wisconsin’s most trusted roofing contractors.
- Serving Wisconsin since 1983
- More than 20 million square feet of roofing installed
- Leading Duro-Last roofing contractor
- Commercial, industrial, municipal, and educational roofing expertise
- Preventative maintenance and roof asset management programs
- Multiple Wisconsin locations
- Residential and commercial roofing services
- Backed by Royalty Roofing’s national resources
Why Choose Royalty Roofing / Nasi Roofing
Commercial roofing projects require experienced contractors who understand the complexities of large buildings and low-slope roofing systems.
- Manufacturer System Warranty
- Royalty Roofing Workmanship Warranty
- Certified Duro-Last Installers
- Free, Detailed Inspections
-
This was a full roof tear off, decking and vent replacement. The team was on time, super friendly and were done in a single day. They did a great job!
Jennifer Plumm
May 29, 2026 -
Professional work,they arrived when they said they would and did a great job! After they finished they cleaned it all up and went over the area checking for nails with a magnet. Great job. Thank you! Dennis Marcum
Dennis Marcum
May 27, 2026 -
I want to shout out Christina !!! She is one of the best sales people I have interacted with in a long time! Very patient and willing to work with you. And when you have people like my husband and I that can't make up their minds with all the options she was so willing to talk to talk us threw everything and even gave us her professional opinion. With her being around for a while and experience she was able to tell us what she has seen that works and doesn't work.! Everything was a smooth process!! I can't wait for the process to start!
Lisa Dickinson
May 21, 2026 -
The workmen were quick and courteous. The roof replacement took only one day and it looks great. The gutters were completed several days later but look great and function very well. I appreciate the effort that Jared gave us with the estimate. He communicated very well with us and we were able to ask him several questions which he answered completely. My sister had Royalty Roofing replace the roof on her house and suggested them for our job. I appreciate the workmanship.
Keith Stam
May 5, 2026 -
Royalty roofing did a great job installing our new roof and skylights. Very professional in every aspect, & I would recommend them.
tom aton
May 3, 2026 -
Well it hasn’t rained since it’s been installed, so I can’t say it hasn’t leaked yet. But it looks good enough.
Travis Acton
April 16, 2026 -
Great communication from the start, from the first time I called for a quote to the date of completion it was a great experience!
Casey Kirts
April 16, 2026 -
Great team, great experience with replacing roof + adding new decking (mostly asphalt shingles with some metal roofing), new fascia, soffit, gutters as well. Highly recommend. We had gotten quotes from three different vendors. Royalty's price was reasonable and plus with other friends' high recommendations for their quality of work, we went with them and do not regret it at all.
Beth Nafziger
April 3, 2026 -
Such great service provided. They done a spectacular job on my gutters. Fast and reliable work. I will definitley be using their services in my future need. Thanks to all who were a part of my great quality and service.
Jeremy Russell
March 18, 2026 -
Royalty Roofing did an excellent job with my roofing repairs. They were professional, timely, and easy to work with. Highly recommend Reagan and his crew!
Amy Jenkinson
January 21, 2026
Industries We Serve
Division 7 Roofing provides commercial roofing services for a wide range of facilities throughout Michigan.
- Manufacturing facilities and industrial plants
- Warehouses and distribution centers
- Schools, colleges, and universities
- Healthcare and medical facilities
- Office buildings and commercial properties
- Retail centers and multi-location portfolios
- Churches and nonprofit organizations
- Residential shingle projects
Get a Roofing Estimate in Wisconsin
Whether you need commercial roof repairs, a complete roof replacement, preventative maintenance, a Duro-Last roofing system, or residential shingle roofing services, Nasi Roofing has the experience and resources to help.
Contact us today to schedule a roof inspection and discover why Wisconsin businesses and homeowners have trusted our team since 1983.