Spunbonded, 100% polyester, nonwoven, heat-set polyester mat. For use with model No. HE289046 Elasto CAULK and other Henry asphaltic mastics and coatings. High degree of fabric impregnability, tensile strength, expansion behavior, puncture resistance, tongue tear strength, and tear strength. Repair fabric for both new and old construction in roofing and waterproofing applications. 8.7 mil. thickness.