Polyglass adds patent-pending Tri-Strata Technology to steep-slope portfolio with two new modified bitumen underlayments

Polyglass U.S.A., Inc. expanded its steep-slope roofing portfolio in August 2026 with the introduction of patent-pending Tri-Strata Technology and two new modified bitumen hybrid underlayments: Polyanchor HU and Polyanchor HU PLUS, both targeted at mechanically attached tile roofing applications.^[1][2]

What Tri-Strata Technology is

Tri-Strata Technology is a three-layer construction consisting of high-strength nonwoven fabric facers surrounding a modified bitumen core.^[1] The architecture is designed to address three distinct performance demands in a single sheet:

• Nonwoven fabric surface - engineered for traction and jobsite durability
• Modified bitumen core - designed to enhance nail sealability around fasteners and penetrations
• Nonwoven fabric base - intended to provide strength and stability across the roof deck^[2]

According to Polyglass, the modified bitumen core makes up more than 80% of the product composition in both Polyanchor HU and HU PLUS.^[1] The company says the design is intended to improve durability, sealability around fasteners and penetrations, and overall jobsite performance, though no independent third-party test standard is cited in the product announcement.^[1] The Tri-Strata name and construction are described as patent-pending.

Two SKUs, two use cases

Polyglass is positioning the two products at different points in the project lifecycle:

• Polyanchor HU - designed primarily for new construction. Polyglass says it provides deck protection, improved walkability, and installation efficiency for mechanically attached tile roofing systems.^[1]
• Polyanchor HU PLUS - intended for reroofing and more demanding jobsite conditions, specifically where increased foot traffic, deck variability, and material staging may place additional stress on the underlayment.^[1] The product page describes it as suited for rough or uneven surfaces commonly found in re-roof applications.

Both products are engineered to provide tear and puncture resistance while protecting the roof deck during installation and throughout the service life of the roof system.^[2] Pricing is not disclosed. Both are available through Polyglass distribution channels.^[1]

Context in the Polyglass portfolio

The Polyanchor line has previously included products such as the Polyanchor HV, a high-velocity wind anchor sheet for tile systems used in conjunction with Polystick self-adhered underlayments. The HU and HU PLUS represent a different construction approach - combining the modified bitumen content of a traditional anchor sheet with nonwoven fabric facers - rather than the woven polymer base used in earlier Polyanchor variants. Polyglass has not disclosed whether the HU products carry Florida Building Code or Miami-Dade NOA listings at launch; specifiers working in high-velocity hurricane zones should confirm applicable approvals before specifying.

Technical data sheets and product resources are available through Polyglass representatives and at polyglass.us. The company has not announced a specific testing standard to which nail sealability performance is measured.