GatorSeal® Underlayment is a heavy duty, modified asphalt reinforced underlayment that seals around nail penetrations and protects against ice dams and wind driven rain.

Features:

• Uniformly seals to the deck and around fastener penetrations
• Modified asphalt reinforced with an extra heavy fiberglass mat
• UV protected surface
• Aggressive bond at low temperatures
• Helps to protect building from damage due to ice dams and wind driven rain