GCP invented fully-adhered roofing underlayments more than 35 years ago. Grace Ice and Water Shield fully-adhered smooth surface roofing underlayment provides best in class roof leak protection against wind driven rain and ice dams. Grace Ice and Water Shield roofing underlayment， a registered trademark of GCP Applied Technologies， is the name that contractors trust the most to protect their reputations.

Strong adhesion to the roof deck: helps ensure watertight seal， protecting roofs from harsh weather conditions

High quality seal around roofing nails: delivers best in class roof leak protection; providing peace of mind against costly call backs

Forms superior laps: helps ensure a watertight installation with no special treatment of the laps

Ripcord split release on demand: makes it easier to waterproof detail areas such as valleys， chimneys， roof to wall transitions

Longest performance history: with over 35 years of performance history， Grace Ice and Water Shield roofing underlayment offers the highest confidence for the life of the roof

Protects roofs from wind driven rain and ice dams

Versatile - suitable for use under most rood coverings， including asphalt shingles mechanically attached tiles and most standing seam metal roofs

36 in. x 75 ft. size provides 225 sq. ft. of coverage

Underwriters Laboratories Inc. Class A fire classification under fiber-glass shingles and Class C under organic felt shingles (per ASTM E108/UL 790)