Benefits Expands 50 times its original sizeSeals all openingsR-Value of 6.5 per inchWater ProofVapor Barrier Benefits Mold ProofImproves Racking StrenthOvercomes Roof LiftGreat for Over the Air SoundProofingRecommended by FEMA for Flood Zones Recommended Uses BasementsWood FrameHomesHigh Wind AreasFlood ZonesExterior envelope