The Henry Eaveguard Self-Adhered Shingle Underlayment is specifically designed to provide secondary waterproofing protection to shingles as well as prevent ice damage. It is composed of high-tack rubberized asphalt and glass fiber mat. Sand on the upper surface provides a slip-resistant working surface. Additionally, the lower surface has a split-release silicone release backing for ease of application.

Features:

• Self-seals when penetrated by mechanical fasteners or roofing nails
• Prevents lateral moisture migration