GLASS EYES, GLASS WINDOWS: A thin, clear membrane that forms over elongated polyurethane foam cells. Glass eyes may break when coated, forming a PINHOLE. (See also PINHOLE.)
GLOSS: The shine, sheen, or luster of a dried film.
GRANULE: Size No. 11 ceramic aggregate embedded into wet coating over polyurethane foam for aesthetics, traction, and mechanical resistance.GRAVEL STOP: The roof edge treatment designed to retain gravel.