Grace Ultra fully-adhered， smooth surface roofing underlayment is designed for extreme temperature roof assemblies. It delivers best in class water protection in applications where withstanding high in-service temperatures for extended periods of time is required. Grace Ultra roofing underlayment is a unique waterproofing solution that matches the long term durability of copper roofs.

Heat resistance up to 300°F 100% butyl adhesive is ideal for use in elevated temperatures， for copper， zinc roofs， or any application where superior heat resistance is required

Superior protection for expensive metal roofs: unique solution for protecting high end roof coverings

Membrane bonds to the roof deck and forms high quality laps: helps ensure watertight seal and premium leak protection

Compatible with roofing materials: provides watertight transition between low slope and steep slope roofs

Protects roofs from wind driven rain and ice dams

Aesthetically pleasing - the thin membrane meets code standards for fastener seal ability but will not show through roof coverings

Grace expertise: developed by the recognized leader in self-adhered roofing underlayments and the manufacturer of Grace Ice and Water Shield

Grace expertise - grace is the recognized leader in self-adhered roofing underlayment and is the manufacturer of Grace Ice and Water Shield

Underwriters Laboratories， Inc. R13399 Class A fire classification under fiberglass shingles and Class C under organic felt shingles