Yes, underlayment is required under metal roofing in Florida—especially in hurricane-prone areas. Learn why underlayment matters and what Roof Nuts uses to exceed code.

Do I need underlayment under a metal roof?

Metal Roofing FAQs
September 05, 2025•2 min read

FAQ: Do I Need Underlayment Under a Metal Roof in Florida?

Yes, underlayment is essential under a metal roof in Florida—especially in hurricane zones.

Here's why:

1. Waterproofing and Storm Protection

  • Florida’s extreme weather—hurricanes, heavy rain, and wind-driven rain—makes a waterproof barrier critical.

  • Underlayment serves as the last line of defense if wind lifts panels or fasteners leak.

  • Florida Building Code requires approved underlayment beneath all metal roof systems for residential construction.

2. Types of Underlayment That Work Best

  • Synthetic underlayment: Lightweight, durable, and UV-resistant.

  • Peel-and-stick membrane: Offers superior adhesion and waterproofing, especially near roof edges, valleys, and penetrations.

At Roof Nuts, we install premium underlayments that exceed Florida code. We tailor the product to your roof’s pitch, location, and wind zone.

3. Noise & Insulation Benefits

  • Underlayment helps reduce noise during heavy rain or hail—something metal roofs are known for.

  • It adds a layer of thermal protection, keeping your attic cooler and reducing energy costs.

4. Required by Code and Warranty

  • Without proper underlayment, your roof may not pass inspection, and manufacturer warranties can be voided.

  • Roof Nuts ensures every roof complies fully with Florida Building Code and manufacturer guidelines.

Related Questions Homeowners Ask

What underlayment is best for metal roofs in Florida?

Peel-and-stick or high-performance synthetic underlayments are best. They're designed to resist water intrusion and hold up to high heat and wind.

Does underlayment go under a metal roof on a shed or detached garage?

Yes. Even non-living spaces benefit from moisture protection and reduced noise.

Can I install a metal roof without underlayment?

No. Florida code requires it, and skipping it can lead to leaks, mold, and insurance issues.

Need a Metal Roof Installed Right?

Call Roof Nuts at 904-694-3426. We serve Jacksonville, Miami, Orlando, Tampa, and all across Florida. We don’t just meet code—we build above it.

Let us help you protect your home the right way.

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