In many parts of the U.S.—particularly in hurricane-prone regions like Florida—the roofing industry has leaned into direct-adhered tile systems for their speed and simplicity. But while adhering tiles directly to the underlayment may appear to be a time-saving solution, it can create performance and durability challenges that show up when the wind really starts to blow.
❗ The Problem with Direct-Adhered Systems
Direct-adhered tile systems involve applying tile directly to the underlayment using adhesives or fasteners, without a batten grid beneath. While this might seem more secure or streamlined, it can create several issues in high-wind environments:
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Trapped moisture: Without battens, there's limited airflow under the tile, which can lead to condensation and long-term moisture issues.
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Reduced uplift resistance: Battens provide an extra layer of mechanical anchoring that helps distribute wind loads. Without them, uplift forces can act more directly on individual tiles.
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Thermal inefficiency: Lack of airspace under tiles can reduce the roof’s ability to shed heat, increasing attic temperatures.
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Underlayment strain: All the stress of wind, weight, and movement transfers directly to the underlayment membrane.
According to the Florida Building Code, while both adhered and mechanically fastened systems are permitted, battens are often recommended for enhancing uplift performance in wind zones above 110 mph (FBC 7th Edition, R905.3.7.2).
✅ Why Batten Systems Are a Smarter Choice in Storm Zones
Using battens under tile creates a raised grid system that tiles sit on. While it may require more labor, it provides clear advantages in hurricane-prone areas:
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Improved wind uplift resistance: Battens help transfer wind loads through a secure fastening system, reducing the likelihood of tiles detaching in storms.
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Ventilation and drainage: Battens create a natural air channel under the tile, promoting moisture evaporation and cooling of the roof system.
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Extended underlayment life: Less direct friction and wear from tiles means your underlayment performs better and lasts longer.
In testing by the Tile Roofing Industry Alliance (TRIA), batten systems consistently outperformed direct-adhered setups in simulated wind uplift conditions (TRIA Installation Manual, 2021).
🔧 What Does This Mean for Your Roof?
While local code may allow for direct-adhered tile in high-wind areas, performance is about more than compliance—it's about protecting homes and investments for the long run. Choosing a batten system over a direct-adhered approach might take a bit more time upfront, but in hurricane zones, it could be the difference between riding out the storm or calling for emergency repairs.
At Oskorp, we design our underlayments to support both direct-adhered and battened systems, with an emphasis on resilience, durability, and proper ventilation.
Because when the winds pick up, cutting corners isn't worth it.