This product immediately kills mold, fungus, or bacteria then evaporates, leaving no residual chemical activity. Oxine breaks down into sodium chloride, or common table salt. The air return and plenum are manually cleaned with portable vacuum equipment and then treated with Oxine. All accesses are closed properly. If the system is sheet metal, proper gauge sheet metal is cut to size.
Insulation is put in place if required.
Mastic is applied to the patch opening. The patch is secured with sheet metal screws, duct tape, metal tape, and more mastic. If the system is made of duct board or flex duct, the ten-inch cut out is reinserted. The entire area is fastened with approved duct tape and metal tape to insure a proper seal. The insulation in the air handler unit case is manually cleaned and then decontaminated with Oxine.