Drying time for wet insulation depends on type, ventilation, temperature, and humidity. If it doesn't dry within 2-3 days, it should be removed to prevent mold and wood decay.
Vermiculite insulation is a pebble-like, pour-in product that is light-brown, gray, or gold, often with shiny flakes or small accordion-like pieces.
Mold on insulation often appears as black, brown, or greenish discoloration and is accompanied by a musty, dank odor.