Premium Spray Products Foamsulate210 2LB Closed Cell Spray Foam Insulation Reduce heating and cooling costs by 40% or more. • High 6.7 R-value per inch! • An advanced insulation system like FOAMSULATE™ 210 will do more than control the air leakage – when applied at 2” or greater it is both an air and vapor barrier! • Since FOAMSULATE™ 210 will not sag or settle your insulating power will be maintained for the life of your structure. • The rigid nature of closed cell foam will add significant strength to any structure.