roofing with a difference

NexGen puts the focus back on exceptional service

Roof Replacement And Repair

we protect what's under your roof!

Meet Our Team

We protect everyone and everything you love.
We got you covered!

Tim Gannon
Tim GannonOwner, NexGen Roofing
Meet Tim the Founder and Certified Preferred Contractor of NexGen Roofing Systems. Tim has over (15) years of experience in the roofing industry, and has spent years working alongside some of the best roofers in the country. With all of his experience Tim has successfully installed hundreds of roofs on his own before founding NexGen Roofing Systems. Tim takes a strong focus on customer satisfaction, quality products, and top-notch workmanship.
Tim is a firm believer that it is a contractor’s job to educate the customer on all phases of the roof process, from start to finish. He is so confident in his crew’s work, each roof replacement is backed by a fifty-year, transferable warranty. NexGen Roofing Systems has a goal to be the next generation of roofing, using only the best material and technologies the industry has to offer. Call Tim any time with questions about your roof! (865)951-1885
Joshua Ayers
Joshua AyersDirector of Business Development
Meet Josh our Director of Business Development.
Josh is a Multi-talented Startup Founder successful at managing company roles in order to maximize business and customer success. As a Visionary Leader he has prepared himself to leverage abilities in Operations and Communication to take on a new role as NexGen Roofing System’s “Director of Business Development”, and continue to move the company forward with preferred customer service and quality control management.
Josh has spent the past nine years perfecting his skills in sales and understanding the best methods to educate all of his clients in what is needed for a happy worry free future.
In his free time he enjoys playing music (guitar/piano) with friends and local community musicians. He is married to his beautiful wife Michelle and the father of Elijah and Audrey Rose.
“I am looking forward to being your go to guy in the roofing industry.” – Joshua Ayers
Our Team
Our TeamNexGen Roofing
Your roof protects your family and everything you care about. Don’t take any risks with installation or repair.
Choose a Knoxville Residential and Commercial roofing company you can trust.

About NexGen

Our History

NexGen Roofing Systems, LLC has over 20 years of experience. We have installed thousands of roofs, with different materials, sizes and conditions.

In those two decades, we learned to “read a roof” and spot even problems that other contractors miss. And most importantly, we know exactly how to fix it. Whether it be an awkward ridge line, a rotted section of plywood, or a chimney that has bad flashing—you can count on us to do the job quickly and cost-efficiently.

That’s why our customers always come back. They see the difference in our service and skill.

Our Philosophy

Tim Gannon has always told us: “The roof is one of the most important assets in a house. It protects the people and the property, and it must be installed properly every time.”

NexGen Roofing Systems never takes shortcuts or does shoddy work. Poor quality not only wastes time and money, but can cause structural damage and even create fire hazards. We always put your satisfaction and your safety first!

Our Promise

We may work on roofs, but we work for people. We understand your needs, and make sure there is always proper communication and clarity. Most people get “stressed out” by house repairs—we do our best to make sure that you’re not.

We also use high quality materials and state-of-the-art roofing equipment and technology. This means that the roofing job is completed faster, and the roof lasts longer.

Get An Estimate Today

Relax. We make it easy for you and your family.

Our Mission

Until recently, NexGen Roofing Systems operated in the Northeast, where our owner and founder Tim Gannon was based. We just opened our offices in the Tennessee area, where will we continue the NexGen tradition of superior service.

Our company proudly provides service in several areas of East Tennessee which include (but are not limited to):

  • Knoxville
  • Maryville
  • Harriman
  • Beech Springs
  • Powell
  • Farragut
  • Lenoir City
  • Oak Ridge
  • Sevierville
  • Clinton
  • Concord
  • Loudon
  • Sweetwater
  • Pigeon Forge
  • Jefferson City
  • Alcoa
  • Kingston
  • Tellico Village
  • Athens
  • Oneida
  • Other surrounding areas

Trusted Roofing brands

Built to last. Quality you can count on.