NorWesco 2.67 In. x 50 Ft. Roll Z-Stop

For composition, shingle, shake, or tile roofs. Apply to roof peak, under the ridge cap, beneath chimneys, gables, skylights, etc. May use grommeted galvanized roofing nails or approved roofing adhesive for installation. Won't remove existing moss or mildew from the roof, only inhibit further growth.