Adhesives
Hardcast manufacturers water, spray applied and solvent based adhesives used for attaching fiberglass insulation to metal ductwork. These adhesive are applied to either the metal or insulation surface and are differentiated by their dry times. Depending on the adhesive, they will meet ASTM C 916, have City of LA approval and have UL 723 or ASTM E 84 Flame and Smoke classifications.