Grace, 9" x 50', Roof Detail Membrane, A Premier Membrane Based On The Grace Ice & Water Shield Technology, Used As A Flashing To Provide Resistance Against Water Infiltration At Trouble Prone Roof Detail Areas, This New Membrane Has The Unique/Patented Ripcord Feature For Easy Installation At Transition Areas & Allows For Future Tie-Ins, Composed Of 2 Waterproofing Materials: Rubberized Asphalt Adhesive Backed By Layer Of High Density, Cross Laminated Polyethylene, Seals Around Nails, Will Not Crack, Dry Out, Or Rot, Protects Under All Standard Sloped Roof Coverings, Slate, Tile, Cedar Shake, Metal, Asphalt Shingles, Slip Resistant, Shrink Wrapped Rolls.