The Excelfrax® product line is based on advanced microporous insulation technology with superior insulating characteristics. Excelfrax microporous insulation is composed of inorganic oxides; primarily, fumed silica. Silicates and opacifiers are added to improve the material performance. Microporous materials are very efficient insulation products. These products actually have thermal conductivity values lower than still air. This performance is based on the ability of microporous insulation to block the three modes of heat transfer (i.e. conduction, convection and radiation).
Excelfrax 1800 Board is a rigid material with comparatively high density, compression resistance and strength. It is available in thicknesses up to 50 mm (2″).