When selecting insulation for your home, you want the best performing product available, and the one that provides you with the best value for your money.
With cellulose Insulation you get both great value and great performance, including the highest R-value per inch, excellent fire retardant capabilities and exceptional sound control, not to mention the fact that cellulose is one of the greenest building products in the world today.
The other guy, Fiberglass
The recycled content of fiberglass insulation ranges from 0-40%, primarily glass products, and that figure often includes waste from the manufacturing line itself. While fiberglass claims to lower energy costs over the lifetime of a building, making it environmentally friendly, this is true of all insulation products. The simple fact is that fiberglass takes large amounts of energ to produce relative to Cellulose insulation2 and provides far less energy savings over the life of a building.
What is R Value?
R-value is a measure of resistance to heat flow through a given thickness of material. In theory, the higher the R-value, the greater that resistance. That’s fine as far as it goes but does not address heat loss by convection, radiation or air infiltration. Air movement inside and through walls accounts for most of the heat loss in a new home. Fiberglass insulation offers little resistance to the movement of air inside a wall cavity. Cellulose is sprayed in filling every nich and forms a densely packed structure between studs. Air can not move inside cellulose insulation.
Houses built by LeGrand Construction have an R Value of R24 in the walls and R50 in the roof.
Cellulose insulation has other benefits as well. It makesa superb sound barrier and is used in floors and interior walls. The cellulose is impregnated with borax, bugs hate it, there is zero outgassing of any kind and it is an excellent fire retardant.