ICC-ES Recognized : R-Value = 15.67 unaffected by humidity : Prevents condensation : Prevents 97% of radiant heat transfer : Vapor barrier : Elastic : 19dba contact noise reduction : UV resistance : Seals around nails (no leak) : Reflective aluminum foil on each side of 3mm (1/8) closed-cell polyethylene foam center : Keeps its shape over time (doesn't collapse) : Rippled surface increases airflow : Member of US Green Building Council - Over 2 billion square feet sold worldwide. Read Super Shield insulation reviews top left of page. >>>1/8 inch 4ft x 62.5ft >>>Non-Perforated SOLID Vinyl White Finish / Foil Other Side Additional Details ------------------------------ Product description: ICC-ES Recognized : R-Value = 15.67 unaffected by humidity : Prevents condensation : Prevents 97% of radiant heat transfer : Vapor barrier : Elastic : 19dba contact noise reduction : UV resistance : Seals around nails (no leak) : Reflective aluminum foil on each side of 3mm (1/8) closed-cell polyethylene foam center : Keeps its shape over time (doesn't collapse) : Rippled surface increases airflow : Member of US Green Building Council - Over 2 billion square feet sold worldwide. Read Super Shield insulation reviews top left of page. >>>1/8 inch 4ft x 62.5ft >>>Non-Perforated SOLID Vinyl White Finish / Foil Other Side