Blended loose-fill insulation having irregularly-shaped fibers

A method of making a blended loose-fill insulation product comprising the steps of:

• providing a first insulating material comprised of a first series of three-dimensional groups of fibers having a first size and density;
• providing a second insulating material comprised of a second series of three-dimensional groups of fibers having a second size and density, said second size being smaller than said first size of said fibers;
• wherein the fibers of at least one of said first or second insulating materials are irregularly-shaped glass fibers wherein each fiber is comprised of two distinct glass compositions with different coefficients of thermal expansion;
• and
• blending said first and second insulating materials together.