Supplies which can be employed as being a spray foam thermal barrier are drywall and plywood. Gypsum board is an additional thermal barrier as it is a drywall substance by using a fire retardant built-in. There's also DC-315 paint that is sprayed straight on to the foam insulation at https://product-photography86048.fireblogz.com/65926176/not-known-details-about-vibration-dampening