a method of supporting loose fill insulation in a wall cavity with a flexible cloth . the cloth is secured to the wall cavity frame by initially fastening the upper and lower edges of the cloth to the upper and lower plates , and then permanently gluing the cloth to the vertical studs with a flowable adhesive . a small punch hole is made in the cloth to accommodate an installation tube , which is preferably angled at its end to facilitate reaching into small spaces and cracks . loose fill insulation is blown into the cavity behind the cloth after inserting the installation tube through the punch hole in the cloth . the quality of the adhesion of the cloth to the studs can be assessed by observing the color of the studs through the cloth .