Additional Details ------------------------------ Product description: 1200 sqft Carport White Reflective Foam Core 1/4 inch Insulation Barrier Roll Energy Star Qualified : ICC-ES Recognized : R-Value = 8 unaffected by humidity : Prevents condensation : Prevents 97% of radiant heat transfer : Vapor barrier : Elastic : 19dba contact noise reduction : UV resistance : Does not promote mold or mildew : Does not provide for nesting of rodents, bugs or birds : Seals around nails (no leak) : Reflective aluminum foil on each side of 6mm 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. >>>1/4 inch thick >>>1200 sqft (2 rolls of 4 feet x 125 feet plus 200sqft) >>>Non-Perforated White Finish Material: Other