What does “self-flashing” mean?
When Gaco RoofFoam is sprayed on a surface, the foam is liquid. As the foam cures, it expands to fill the roof contours. The spray-applied foam conforms to the contours of any shape (such as smokestacks, skylights or vents). Within minutes the foam cures to a rigid, protective insulation, expanding to fill holes, nooks and crevices.