... aluminium foil can reflective 97% radiant Heat and Cool .2. The Tiny air cell can slow down the heat conduction ... Data UnitWidth of roll1.25mLength of roll150mThickness2mmRemarks : can Range from 2 to 10mmDiameter70cmcoverage187.5m2Weight15kgTemperature: -50°C TO 80°CEmissivity 0. ... works well works well in both extreme cold andHot climate ,2. in Roof , Wall , Ceiling , Floor , Attics, ,Pole Barn, ...