Adhesives like mastic and gunning mix have been used for hundreds of years, but the use of modern construction mastics and gunning mix began in the early 1900s. Many new plastics and rubbers were synthetically produced and several new adhesive products were developed for use in the construction industry.
Many of these mixes were produced for use during World War II. Adding synthetic rubber and other fibers to these mixes allowed them to be more flexible and strong. Asbestos was added to these adhesives to make them resistant to extreme temperatures and chemicals.
Gunning mix is commonly used to fill in gaps or spaces in the surfaces of the following equipment:
Steel furnace lining Hulls
Storage tanks Sonar domes
After the use of asbestos declined because of health concerns in the 1980s, companies began using alternatives to asbestos in their construction mastic and gunning mix