How much home insulation should cost. Average costs and comments from CostHelper’s team of professional journalists and community of users. In order to buy materials or talk to contractors, you need to determine what level of R value, or thermal resistance, you want to achieve in a givene. The more effective a material is at insulating, the higher its R value..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..Knauf Insulation Jet Stream ULTRA Blowing Wool Insulation is an unbonded, virgin fibrous glblowing insulation designed with optimal thermal properties and excellent coverage and blowing characteristics..CertainTeed Machine Works has been the industry leader in the technology, design and manufacture of machinery used to install insulation and fireproofing materials..