Polyglass Launched Hybrid Roofing Underlayments
Contractors installing tile roofing systems now have new bitumen-based underlayment options for improved fastener sealing.
Updated on Oct. 14, 2026 in Construction
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Polyglass U.S.A. has expanded its steep-slope roofing portfolio with the introduction of two modified bitumen hybrid tile underlayments, Polyanchor HU and Polyanchor HU PLUS. These products are specifically designed for use in mechanically attached tile roofing systems.
Why it matters
The introduction of this product line aims to address common installer challenges regarding sealability around fasteners and penetrations. By utilizing a modified bitumen core, the manufacturer targets improved puncture and tear resistance for long-term roof durability.
The new underlayments feature a three-layer construction, with the modified bitumen core accounting for over 80% of the total product composition. This configuration is engineered to provide specific tear and puncture resistance compared to standard underlayment materials.
The players
Polyglass U.S.A.
A U.S.-based manufacturer of modified bitumen roofing and waterproofing systems that supplies materials for commercial and residential construction.
The details
The Polyanchor HU and Polyanchor HU PLUS products utilize Tri-Strata Technology, which sandwiches a modified bitumen core between nonwoven fabric facers. This three-layer design focuses on creating a tight seal around nails and other roof penetrations, which is critical for maintaining water resistance in mechanically attached tile assemblies.
Timeline
October 14, 2026: Polyglass announced the launch of new underlayment products.
Market Landscape
This product expansion aligns with the ongoing shift toward enhancing the performance of mechanically attached tile roofing systems. It follows a pattern of manufacturers integrating modified bitumen materials to address specific failure points in steep-slope roofing assemblies.
Roofing contractors should evaluate how the sealability characteristics of this new three-layer construction compare against their current underlayment inventory. Determine if the tear and puncture resistance profile justifies a switch for your upcoming mechanically attached tile projects.
The takeaway
The move reflects a continued industry focus on improving fastener-seal reliability in tile roofing applications. Operators should review the manufacturer's technical specifications for Polyanchor HU and Polyanchor HU PLUS to see if they address specific site performance requirements.
Further reading
For more on industry developments, see the latest reports in Construction.
Source note: This article includes information reported by Roofing Contractor.
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