... bubble sandwiched between layers of aluminum foil Roof, Wall, Floor Thermal Insulation Material Characteristics:The bubble contains an air ... in residential construction in attics, walls, ceilings, and radiant floor heating applications. Also used in industrial/commercial buildings, agricultural ... /bubble + bubble/ALAL/white fire-retardant bubble/AL with blue color, ect.2. Bubble size:10mm×4mm, 10mm×2 ...