Eternabond RoofSeal Sealant Tape, White - 6" x 50'The EternaBond RSW 6 50 RoofSeal tape is white with a 50 foot length and a 6 inch width. Total thickness is 35 mil. The UV stable backing on RoofSeal makes it ideal for use in sunny environments. The elongation factor is very high, which permits RoofSeal to expand or contract with changing conditions. The simple installation only requires some surface preparation before use. RoofSeal can be made to fit around certain objects, as it is able to stick to