Polyglass U.S.A. Inc., a manufacturer of roofing, waterproofing and building envelope solutions, is expanding its steep-slope roofing portfolio with the introduction of Tri‑Strata Technology and two new modified bitumen hybrid roof underlayments: Polyanchor HU and Polyanchor HU PLUS.

Designed for mechanically attached tile roofing applications, Tri‑Strata Technology is a three-layer construction that combines high-strength nonwoven fabric facers with a modified bitumen core to deliver durability, sealability, and performance under real jobsite conditions. Developed to address common installation challenges, the technology helps provide reliable protection around fasteners and penetrations while supporting long-term weather durability throughout the life of the roof system.

Featuring a modified bitumen core comprising more than 80% of the product composition, Polyanchor HU and Polyanchor HU PLUS are engineered to enhance protection around fasteners and penetrations while delivering tear resistance, puncture resistance, and long-term weather durability.

The new Tri-Strata Technology product family includes:

Polyanchor HU
Designed for new construction applications, Polyanchor HU provides dependable deck protection, enhanced walkability, and installation efficiency for mechanically attached tile roofing systems.

 Polyanchor HU PLUS
Designed for reroofing and more demanding project conditions, Polyanchor HU PLUS delivers enhanced durability and added confidence where increased jobsite traffic, deck variability, and material staging place greater demands on the underlayment.

At the core of both products is Tri‑Strata Technology’s layered construction:

  • Nonwoven fabric surface engineered for traction and jobsite durability
  • Modified bitumen core designed to enhance nail sealability around fasteners
  • Nonwoven fabric base engineered to provide strength and stability across the roof deck

Together, these layers work to support durability, sealability and jobsite performance from installation through final roof system completion. For more information, go to polyglass.us