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
• Offers limited warranty
• Meets ASTM D1970
• UL Classified Underwriters Laboratories Inc. Class A fire classification under fiber-glass shingles and Class C under organic felt shingles (per ASTM E108/UL 790)

Sizes available

• 100 sq. ft. (3 ft. x 33 ft. 4 in.)
• 195 sq. ft. (3 ft. x 65 ft.)