Thermal conductivity of Paulownia is very low thus giving it excellent heat/cool insulation properties.
Chemical composition of Paulownia Varieties: Hemicellulose Pentozan 22 to 25%. Cellulose 46 to 49%. Lignin 21 to 23% Water 7 to 8% Ash .50 to 1.1% Fiber 58.5 to 60.1%