Fiberglass spray insulation system and method with reduced density

A method of spraying loose-fill fiberglass insulation substantially free of silicone together with a non-foaming liquid into a vertically extending open wall cavity for the purpose of filling the open wall cavity with insulation, the method comprising the steps of:

• coating the loose-fill fiberglass substantially free of silicone with the non-foaming liquid;
• blowing the loose-fill fiberglass insulation coated with the non-foaming liquid, together with an adhesive, into the vertically extending open wall cavity in order to insulate the vertically extending open wall cavity, so that the coated fiberglass insulation and adhesive are retained in the open wall cavity without a need for a provision of an enclosing structure during said blowing, and the blown insulation in the open wall cavity has a moisture percentage by weight less than about 35% immediately after blowing to reduce cure time;
• and
• allowing the fiberglass insulation and adhesive in the open wall cavity to cure so that when the installed and cured fiberglass insulation is about 3.5 inches thick in the wall cavity, it has an R-value of at least about 13.0, a density of less than or equal to about 2.5 lbs-/ft.sup.3, an applied loss-on-ignition percentage of less than about 2.0% to reduce cure time.