Extensive Roofing Portfolio

Installed and warrantied over 2,000 roofs since 1983

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Duro-last® Roofing Contractor

#1 in Wisconsin and Consistently Among the top in the nation

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Roof Repair + Replacement

Leaky roof? Not enegery efficient? We can help.

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Commercial Roofing Company

Serving Wisconsin and Michigan


Roofing Services

  • Free Roofing Estimates
  • Free Long-Term Budgeting
  • Free Bid Packets including specifications and bid form
  • Maintenance and Repair Services

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Duro-Last Roofing Systems

Discover long-lasting satisfaction and durability with a reliable Duro-Last roof. Backed by the best warranties out there -- it's the only roofing system Nasi Roofing will install.

Nasi Roofing has been an Duro-Last contractor, installing commercial roofs throughout Wisconsin and Michigan since 1983. We have installed and warrantied over 2,000 roofs totaling over 10 million square feet of membrane.

Our commercial roofing company is consistently listed among the top Duro-Last contractors in the nation.

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Metal Retro-fit Roofs

A Duro-Last roof installed over an aging metal roof by our Wisconsin roofing company will give you a better roof than you had to originally and save you money on heating costs.

The Duro-Last roofing system is quick to install because it goes right over your existing roof, eliminating the need for costly tear-offs and disposal.

Your new metal retro fit roof will not crack or leak around penetrations, rust or corrode, require periodic maintenance, creak with temperature changes, or radiate your plant's energy into outerspace.

Learn about the Duro‑Last Metal Retro Fit Roofs

Don't worry, we've got you covered

The last thing you need to worry about is the roof over your head.

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Duro-Last Roofing