seal & coating
Seal & coating is a process that happens after the air ducts have been properly cleaned. After the cleansing, The HVAC Technicians Applies Foster® 40-20®. This coating inhibits the growth and spread of odor-causing bacteria and mold on its surface. Its tough, elastic, water resistant coating may be used on walls, ceilings, pipes and interior/exterior surfaces of HVAC duct systems.