Underlayment
Premium high-temp underlayment for metal roofing
Titanium® PSU30 is a self-adhered, high-temperature peel-and-stick membrane engineered for Florida's heat, heavy rain, and hurricanes - the moisture barrier under every panel we sell.

Titanium PSU30
Built for metal, built for Florida
Titanium PSU30 is a self-adhering, high-temperature underlayment engineered for metal roofing in Florida's heat, heavy rain, and hurricanes - the moisture barrier under every panel we sell.
- High-temperature performance rated up to 240°F
- Self-adhered membrane bonds tightly to the deck - no slipping or bubbling
- Waterproof barrier against leaks and wind-driven rain
- Slip-resistant, contractor-safe walking surface
- Tear-resistant and flexible - won't crack, dry out, or become brittle
- For metal, tile, slate, and asphalt roofing systems
Florida Product Approval FL11602-R19, approved for use outside the High Velocity Hurricane Zone. Verify the current revision at floridabuilding.org before submittal.
Specs
Titanium® PSU30 High-Temp Underlayment
| Type | Self-adhered membrane (peel & stick) |
|---|---|
| Temperature rating | Up to 240°F |
| Compatibility | Metal, tile, slate, and asphalt roofing |
| Surface | Slip-resistant, contractor-safe walking surface |
| Florida approval | FL11602-R19 (Non-HVHZ) |

Installed by ERS
We don't just supply it. We install it.
Add professional installation to your metal roof system and ERS handles the whole job - vetted crews, onsite project management, and code-compliant work from site prep to final walkthrough. One team, one point of contact, start to finish.
- Vetted crews with validated insurances - the 10 Point Peace of Mind Guarantee
- Onsite project management for quality, safety, and timelines
- HVHZ, Miami-Dade, and Broward County code compliant
- Backed by a limited lifetime workmanship warranty
FAQ
Underlayment questions
What temperature is the underlayment rated for?
Titanium® PSU30 is a high-temperature underlayment rated up to 240°F - built for Florida's extreme roof-deck heat under metal panels.
Is it approved in Florida?
Yes. Titanium® PSU30 carries Florida Product Approval FL11602-R19 (Non-HVHZ). The metal panels installed over it are separately HVHZ and Miami-Dade approved.
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