For stapling insulation, 20-gauge staples are recommended, though 19-gauge and 23-gauge staples can also be used.
Mold on insulation often appears as black, brown, or greenish discoloration and is accompanied by a musty, dank odor.
The thickness of R49 insulation is typically around 14 inches. This measurement ensures that the insulation provides high thermal resistance, commonly used in attics and other areas requiring significant insulation to enhance energy efficiency and comfort.