Metal Roof Underlayment Built for Florida Weather
MRM Tornado Underlayment, engineered for the same conditions as everything installed above it.
We build our whole roofing process around one question: how does a roof survive Florida for the long haul? MRM Tornado Underlayment is our answer for what happens below the panel.
Florida-Tested, Florida-Built — Underneath, Too
Reflective face
Aluminum-faced options push radiant heat back before it reaches the attic.
Self-adhered seal
Sealed tight against the driving rain that comes with a Florida storm season.
Built for Florida Sun
The radiant-barrier face reflects heat instead of soaking it up all afternoon.
Built for Heavy Rain
Self-adhered and sealed, built to handle Florida's wettest months.
Class A Fire Rated
Class A fire resistance as part of a tested roof assembly.
Quieter in Downpours
Dampens sound during the loud downpours that come with a Sunshine State summer.
Built for Repeated Storm Seasons
Self-adhesive seal around every fastener, built to last through repeated storm seasons.
Positioned for Florida Conditions, Not Generic Ones
Self-adhered directly to the deck, sealed around fasteners, before the panel goes on — positioned to handle heat, humidity and driving rain the same way the panel above it does.
Matched to Sun Exposure and Roof Profile
Four Tornado underlayment products, chosen to match sun exposure, roof profile and climate.
MRM Tornado Radiant Barrier SWR 5000 FR
The pick for roofs facing the most direct Florida sun.
MRM Tornado Radiant Barrier SWR 2000 FR
A lighter reflective option for roofs with more shade coverage.
MRM Tornado Duo Barrier 1500 HT
A self-adhered duo-layer choice for storm-prone coastal areas.
MRM Tornado White SBS Cap Sheet 4000 FR
Mineral-coated for jobs prioritizing long-term surface wear over reflectivity.
Certifications Behind the Climate Claims
- Miami-Dade County Approved
- Class A Fire Resistance
- Meets or exceeds ASTM D1970
- Standard 20-Year Limited Warranty
- Manufactured in the USA
- Paired system approval with MRM Tornado Steel & Aluminum Roof Panels (FL-approved)
Building a Roof for Florida's Climate
Assess sun and storm exposure
Which side of the lineup fits your roof's conditions.
Quote the matched system
Panel and climate-matched underlayment together.
Seal the deck
Self-adhered underlayment installed first.
Install the panel
Completing a system built for sun, salt and storms.
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