He740915 Self-adhesive Shingle Underlayment, 3 Ft X 33.3 Ft, Fiberglass

Henry Eaveguard Self-Adhesive Shingle Underlayment is a secondary line of defense designed to keep water from infiltrating behind shingles and damaging your roof structure. This fiberglass-based underlayment is engineered for direct-to-deck application in vulnerable areas of steep-slope roofs, providing protection against water penetration caused by wind-driven rain and ice damming. Whether you're a professional roofer or a DIY homeowner, this self-adhering product delivers reliable waterproofing when installed correctly.

The rubberized asphalt coating bonded to a non-woven fiberglass mat creates a durable, water-resistant barrier that stands up to harsh weather conditions. The self-adhesive backing allows the underlayment to bond directly to the roof deck, making installation straightforward and efficient. When roofing nails or mechanical fasteners do penetrate the material during shingle installation, the underlayment self-seals around them, preventing moisture from migrating laterally and maintaining a fully adhered system.

Features and Benefits

• Self-Sealing Technology: The underlayment automatically seals around fasteners and penetrations, creating a continuous moisture barrier without requiring additional sealants.
• Self-Adhesive Backing: The split-release silicone backing allows the underlayment to bond directly to the roof deck with ease of application.
• Ice and Wind Protection: Specifically engineered to prevent water infiltration from ice damming and wind-driven rain in vulnerable eaves and valleys of steep-slope roofs.
• Durable Construction: High-tack rubberized asphalt coating combined with a reinforced fiberglass mat provides long-lasting protection against the elements.
• Water-Resistant: The durable, water-resistant construction keeps moisture out and helps ensure the longevity of your roof.

Specifications

• Brand: Henry
• Model: HE740915
• Width: 3 feet
• Length: 33.3 feet
• Material: Fiberglass mat with rubberized asphalt coating
• Weight: 15 pounds
• Color: Blue

Descriptions are AI-generated. For accurate measurements, please call the store to confirm.