WinterGuard™ waterproofing shingle underlayment is the solution for winning the battle against water penetration in your roof's most vulnerable places. WinterGuard is a composite material of asphalt polymers, formed into a rolled sheet. The asphalt makes it vapor-tight, and the polymers make the asphalt elastic and sticky. This protective barrier is able to stretch and seal around nails driven through it. Placing WinterGuard a minimum of 24" past the interior wall line at the eave provides your first line of defense.

WinterGuard is one of the key components in the CertainTeed Integrity Roof System™.

SAND

• Embedded sand to enhance traction during application
• Improved exposure prior to shingling over
• Very effective under tile
• Meets ASTM D1970
• Length: 65 ft. (short roll 32.5 ft.) Width: 3 ft.
• 68 lbs. per roll (short roll 35.5 lbs. per roll)

GRANULAR

• Embedded granules for superior traction during application
• Improved exposure prior to shingling over
• Very effective under tile
• Meets ASTM D1970
• Length: 65 ft. Width: 3 ft.
• 68 lbs. per roll