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Clean, Lightweight, Easy To Install * Class A / Class 1 Fire Rating * Thermal R-Values Included (see chart below) * Double Bubble Foil is two layers of 3/16" barrier bubble film laminated between two layers of foil. Double Bubble Foil is designed to be used for for water heater and pipe wrap, metal and commercial buildings, stud walls, roofing systems, basements, and crawlspaces when reflectivity and higher R factors are required. Vapor Retardant. Typical Thermal Values for Double Bubble Reflective Insulation Thermal resistance measurements have been made according to the most recent test revisions using a calibrated hot box operated in accordance with ASTM C 976. Analysis of results was done in accordance in ASTM C 1224. The R-values observed are highly dependent on method of installation. How Radiant Heat Transfers Through Roofs Double Bubble is used as insulation against radiant heat transfer and can be used to its greatest advantage in instances where radiation is the predominant means of heat transfer. It is the bright aluminum surface of all Double Bubble products that gives it its insulating properties. This happens in two ways: Double Bubble is an excellent reflector of all long wave radiant heat that strikes it - reflecting up to 97% of all radiant heat. Double Bubble will reradiate only 3% of heat in which it comes in close physical contact, compared with the approximate 90% reradiation of ordinary building materials, at the same temperature. One layer of 3/16" barrier bubble film laminated between one layer of foil -60 degrees F to 180 degrees F (-51 degrees C to 82 degrees C) MOTOR VEHICLE SAFETY STANDARD 302: UNITED STATES TESTING COMPANY. INC. * ASTM Test Method E-84-81A ** ASTM Test Method E-84-95 *** ASTM Test Method D-781 |
