Calcium silicate used as an anticaking agent in food preparation, including table salt and as an antacid. It is approved by the United Nations' FAO and WHO bodies as a safe food additive in a large variety of products. It has the E number reference E552. Calcium silicate is commonly used as a safe alternative to asbestos for high-temperature insulation materials. Industrial-grade piping and equipment insulation is often fabricated from calcium silicate. Its fabrication is a routine part of the curriculum for insulation apprentices. Calcium silicate competes in these realms against rockwool and proprietary insulation solids, such as perlite mixture and vermiculite
Cellulose insulation advantage to a degree, as electricity generation is less than 50% efficient. Cellulose is made with locally available paper, while mineral insulation factories ship materials and products over greater distances. Cellulose insulation uses borates for fire retardation. Borates are a non-renewable mined product. Cellulose insulation The word cellulose comes from the French word "cellule," for a living cell, and glucose, which is sugar. Building insulation is low-thermal-conductivity material used to reduce building heat loss and gain, and reduce noise transmission. Cellulose insulation is plant fiber used in wall and roof cavities to insulate, draught proof and reduce free noise. Cellulose