Metal Roofing Alliance Member
TVA Preferred Partners Network
Music City Specialists
Nashville, TN
Licensed & Insured
BBB A+
.avif)
Call Anytime
(615) 649-5002Free Estimate
When it comes to metal roofing, the panels themselves often get the spotlight. But one of the most important components of any roofing system is what's underneath: the underlayment. Acting as a protective barrier between your roof deck and the metal panels, underlayment plays a critical role in performance, energy efficiency, and longevity. Choosing the right type of underlayment can make all the difference in how well your roof holds up against the elements.
Felt underlayment, also known as tar paper, has been used for decades. It's typically made from a paper or fiberglass base saturated with asphalt. While affordable and effective in certain applications, felt comes with limitations:
Felt may be suitable for budget-conscious projects, but it's generally not the best match for the long life expectancy of metal roofing.
In recent years, synthetic underlayment has become the preferred option for metal roofing. Made from advanced polymers, it offers a range of advantages:
Because metal roofs can last 40 to 70 years, pairing them with a high-performance synthetic underlayment ensures the entire system works together for maximum protection.
Your roof is only as strong as its foundation. Underlayment helps prevent leaks, adds an extra layer of insulation, and provides peace of mind in case of severe weather. For homeowners investing in metal roofing, choosing synthetic underlayment is a smart way to protect that investment and extend the life of the roof system.
At The Metal Roofers, we don't just install metal roofs. We install complete systems designed to perform for decades. From the panels to the underlayment, every detail matters. Contact us today for a free inspection and estimate, and let's make sure your roof is built to last.
The material cost difference between gauges is real but not dramatic. Going from 26 to 24 gauge typically adds $1.50–$3.00 per square foot to the project. On a 2,000 sq ft roof, that's roughly $3,000–$6,000 more — but you're getting a meaningfully more durable roof that may save money on repairs over decades.
We generally don't recommend 29 gauge for primary residences in Nashville. While it works fine for barns, carports, and outbuildings, it's thinner and more susceptible to denting from hail — and Nashville gets plenty of hail. The cost difference between 29 and 26 gauge is modest compared to the performance gap.
For most Nashville residential projects, 26 gauge is the standard choice. It provides excellent wind and hail resistance for Middle Tennessee's climate at a reasonable price point. 24 gauge is the premium option for homeowners who want maximum durability and dent resistance.
When it comes to metal roofing, the panels often get the spotlight. But one of the most important components of any roofing system is the underlayment.
When it comes to metal roofing, the panels often get the spotlight. But one of the most important components of any roofing system is the underlayment.
When it comes to metal roofing, the panels often get the spotlight. But one of the most important components of any roofing system is the underlayment.