Abstract: An apparatus and a method to retain loose fill or particulate insulation between the outer and inner walls of a structure is provided. The apparatus comprises netting composed of netting material with some degree of flexibility and is constructed so as to provide a number of netting or air passage holes in which the surface area of the netting material is substantially less than the area or holes defined between the pieces of netting material. The netting is adapted to be secured to the vertically extending studs and horizontally extending joists of the structure. The netting is secured to the inwardly facing sides of the studs and joists after the outer wall has been mounted on the structure. One or more access holes are then created in the netting and a hose is inserted in each access hole to deliver the particulate insulation into the enclosed space defined by the outer walls, the studs, the joists and the netting.

Abstract: A process for supplying insulating materials wherein fibrous insulating material moves in a confined turbulent air stream into which an adhesive is injected. Air under pressure is also injected so that portions of the air are entrapped within the fibrous insulating material. The injection of the adhesive and the air increases the pressure of the confined moving air stream so that the fibrous insulating material expands and fluffs when released to the atmosphere.