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Unique water-shedding and special weaving technologies provide extraordinary walking traction, wet or dry. Gray Hawk provides legendary traction. Professional Roofers can tell the difference!

Key Features

• Suitable for all asphalt shingle and metal steep-sloped roofs. A superior substitute for any application calling for asphalt saturated underlayment (#15 or #30 felt)

• Deck side slip-resistant coating

• Strong and durable

• Impervious to mold

• Lays flat and stays flat (will not buckle when wet)

• Will not tear easily, even in high wind conditions

• Secondary water barrier

Gray Hawk

Grayhawk Synthetic Underlayment - All Sizes