Roof Repair +
Replacement

Roof Repair vs Replacement

If your current roofing system is older and beginning to experience chronic leaking or if the roof system is lacking insulation and not energy efficient, it may time to consider a replacement instead of a repair.


Repairing a Duro-Last Roof

A Duro-Last roof is not like most other single-ply roofs. Because it is prefabricated in a factory to reduce seams by up to 85 percent, it fits like a glove over your building's roof deck. Properly installed, it may never need repairing. When it does, though, avoid using your own facilities crew to make repairs on a Duro-Last roof.

Keep the warranty intact by letting us complete the repair for you. Not all PVC roofing responds equally well to chemical solvents or heat seaming, so repairs must be handled carefully. Having the right tools, the correct mil thickness of repair material, and the proper training from Duro-Last makes the job a breeze. Having none of those advantages, your own crew may find the job a nightmare.

Are you in need of urgent roof repair? Call 1-800-475-7663 now to speak with a knowledgeable team member. Otherwise, request a routine inspection of your commercial roof to evaluate your entire roofing system and all the components associated with it. Early detection of possible issues can save you money and add years to the life of your roof.

Request a roof inspection
Request a roofing estimate

Replacing a Your Roof with a Duro-Last Roof

Replacing your commercial roof can reduce your heating costs, increase your property value, and reduce your roof maintenance costs. You can trust our experienced roofing contractors to advise whether your best solution is continuing to repair or complete a roof replacement by conducting a comprehensive roof evaluation.

Do you currently have a metal roof?

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

Learn about the Duro‑Last Metal Retro Fit Roofs

Do you currently flat or low-slop roof?

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

Learn about the Duro‑Last Roofing System
Duro-Last Roofing Awards

Proven Protection

The durability of the membrane and backing by the industry's best warranties are only a couple of the reasons the Duro-Last roofing system is the only roofing system Nasi Roofing will install.


The Midwest has many different types of weather conditions, and you need a roof that can withstand it all! Duro-Last offers over three decades of proven PVC roof system performance with billions of square feet of membrane installed across North America.

Nasi Roofing has been an authorized Duro-Last contractor, installing throughout Wisconsin and Michigan since 1983. We have installed and warranted over 2,000 roofs totaling over 10 million square feet of membrane. Our Wisconsin roofing company is consistently listed among the top Duro-Last contractors in the nation.

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