The word cellulose comes from the French word for a living cellule and glucose, which is sugar. Building insulation is low-thermal-conductivity material used to separate the internal climate and sounds of a building from external climate and sounds. Cellulose insulation is plant fiber used in wall and roof cavities to separate the inside and outside of the building thermally and acoustically.
Is two to three times more dense so it effectively blocks air better than lightweight fiber glass batts. Completely fills cavities, eliminating voids and gaps, which are common with batt installations that can lead to convective heat loss.