Batt insulation consists of pre-cut, flat pieces that resemble small blankets. This type of insulation is one of the most common forms and is available in various materials, including fiberglass, mineral wool, and sheep's wool.
To remove wet spray foam from your hands, apply acetone or nail polish remover to a cloth and rub gently. Wash with warm water and soap, then apply a moisturizer.
Attic insulation should generally be 10 to 14 inches thick, depending on the R-Value needed for your region.