Tri-Strata™ Technology

Tri-Strata™ Technology is featured in:

• Polyanchor® HU
  Designed for dependable performance and installation efficiency in new construction
• Polyanchor® HU PLUS
  Designed to maintain performance under increased jobsite traffic, more demanding deck conditions, and reroofing applications

Both products utilize the same three-layer construction, allowing contractors to select the right solution based on project needs while maintaining consistency in installation and performance.

Put Tri-Strata™ Technology to Work

Tri-Strata™ Technology brings together durability, sealability, and jobsite resilience in a layered construction designed to perform throughout installation and support long-term roof system protection.

Explore Polyanchor® HU and HU PLUS to find the right solution for your next project.

Tri-Strata™ Technology is a patent-pending, three-layer construction designed to work together to enhance underlayment performance across key jobsite demands.

It consists of:

• Upper fabric layerengineered for durability, tear resistance, and traction under foot traffic
• Modified bitumen coredesigned to conform around fasteners and penetrations to enhance nail sealability
• Lower fabric layerthat helps provide stability and strength across the deck surface

Together, these layers are engineered to:

• Help distribute jobsite stress across the material surface
• Maintain flexibility and integrity during handling, fastening, and installation activity
• Enhance resistance to tearing, punctures, and weathering
• Support protection against moisture intrusion at nail penetration points

This layered construction allows the underlayment to deliver consistent performance across varying roof deck conditions and installation scenarios.

Tri-Strata™ Technology is designed to address the practical conditions contractors encounter on steep-slope roofing projects, including:

• Foot traffic during installation and material staging, including tile stacking
• Fastener penetrations across the deck surface
• Variability in deck condition, particularly in reroofing applications

By combining durable surface layers with a sealable modified bitumen core, Tri-Strata Technology helps the underlayment withstand jobsite demands while maintaining a reliable protective barrier beneath the finished roof system.