Grace Ice and Water Shield HT fully-adhered， smooth surface roofing underlayment is specifically designed for high temperature applications such as metal and tile roofs. It delivers all the advantages of Grace Ice and Water Shield roofing underlayment with thermal stability metal and tile roofs require. Not all high temperature roofing underlayments are the same. Grace Ice and Water Shield HT is an excellent high temperature ice and water barrier that follows in the footsteps of the original Ice and Water Shield， but is specially formulated to meet the higher service temperatures that are inherent to metal and tile roofs. The proprietary adhesive if formulated with a temperature resistance of up to 260°F. The peel and stick membrane forms a watertight bond to the roof deck， and seals around the primary roof covering fasteners to protect the roof deck from water intrusion. It also creates a strong bond to the roof deck. Grace Ice and Water Shield HT peel and stick roofing underlayment delivers an optimal balance of adhesion and thermal stability for superior performance under the most demanding roof types， such as metal and tile roofs.
High Thermal Stability up to 260F
120 day exposure: delivers consistent performance over long， unpredictable construction cycles
High quality seal around roofing nails: delivers strong roof leak protection; providing peace of mind against costly call backs
Protects under all standard sloped roof coverings - Grace Ice and Water Shield HT peel and stick underlayment protects under slate， tile， cedar shakes， metal and conventional asphalt shingles
Strong adhesion to the roof deck: helps ensure a watertight seal， protecting roofs from harsh weather conditions
Forms superior laps: provides watertight installation with no special treatment of the laps
Dual barrier protection - rubberized asphalt is combined with polymeric film to form 2 waterproofing barriers providing maximum protection
Delivers optimum balance of adhesion and thermal stability for superior performance under the most demanding conditions
Protects roofs from wind driven rain and ice dams
Underwriters Laboratories Inc. R13399- Class A fire classification under fiber-glass shingles and Class C under organic felt shingles (per ASTM E108/UL 790)
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