The International Slurry Surfacing Association (ISSA) promotes cooperation between members specializing in asphalt slurry seal and microsurfacing for roads, parking lots, and other pavements. Members represent the slurry and microsurfacing industry in 36 countries. ISSA was formerly known as the International Slurry Seal Association.

Founded in 1963, the International Slurry Surfacing Association (ISSA) is a nonprofit association dedicated to the interests, education, and success of slurry surfacing professionals and corporations around the world. Internationally recognized as the authority in slurry surfacing technology, ISSA promotes the highest standards of ethics and quality while providing its members with information, technical assistance, and ongoing opportunities for networking and professional development.