Polyanchor HU is a mechanically attached roof underlayment engineered with reinforced fabric exterior facers bonded to a modified bitumen core.
Featuring patent-pending Tri-Strata™ Technology, its three-layer construction integrates highstrength fabric facers with over 80% of the product composition consisting of a modified bitumen core to deliver strong tear resistance, flexibility and long-term weather durability.
It is designed to withstand jobsite traffic, wind uplift, and exposure during installation.
The modified bitumen core enhances sealability around fasteners, helping protect against moisture intrusion at nail penetration points.
Designed for steep-slope roofing applications, Polyanchor HU provides dependable deck protection, enhanced walkability, and consistent performance across a wide range of roof coverings, making it a reliable choice for new construction.
Features And Benefits
- Modified bitumen core enhances nail sealability around fasteners and penetrations
- Over 80% of the product composition consists of elastomeric modified bitumen, which enhances durability, flexibility, and long-term performance.
- Tri-Strata™ reinforced construction delivers tear strength and puncture resistance
- Up to 180 days of UV exposure
- Flexible construction helps the underlayment lay flat and handle easily during installation
- Reinforced surface enhances walkability and traction