Abstract: A sheathing system that envelops a building structure is provided, combining lightweight structural layers and a high R-value insulation layer. The insulation layer includes a coated insulation product with a reduced fluorinated blowing agent concentration, while maintaining acceptable thermal properties. The coated insulation product includes a foam product that is coated with a barrier coating. The barrier coating includes a polymer having a minimum degree of crystallinity and at least one additive. The collective layers of the sheathing system offer the benefits of decreased thickness, reduced weight, improved thermal insulation, improved structural strength, improved nailability, improved fire performance, and enhanced energy efficiency.

Abstract: A coated insulation product with a reduced fluorinated blowing agent concentration, while maintaining acceptable thermal properties (e.g., a 180-day R/in value of at least 4.8), is disclosed. The coated insulation product includes a foam product formed from a foamable composition comprising: a matrix composition; and a blowing agent composition comprising less than 3.5 wt. % of a fluorinated alkene, based on a total weight of the foamable composition. The foam product is coated with 3 g/m2 and 225 g/m2 of a barrier coating composition on at least one surface. The barrier coating composition includes: 40 wt. % to 99.9 wt. % of a barrier polymer having a minimum degree of crystallinity of 10%; and 0.01 wt. % to 60 wt. % of at least one additive.

Abstract: A sheathing system that envelops a building structure is provided, combining lightweight structural layers and a high R-value insulation layer. The insulation layer includes a coated insulation product with a reduced fluorinated blowing agent concentration, while maintaining acceptable thermal properties. The coated insulation product includes a foam product that is coated with a barrier coating. The barrier coating includes a polymer having a minimum degree of crystallinity and at least one additive. The collective layers of the sheathing system offer the benefits of decreased thickness, reduced weight, improved thermal insulation, improved structural strength, improved nailability, improved fire performance, and enhanced energy efficiency.