Designers have the option of selecting a board or spray (vermiculite) products to provide the required protection. Both options have been tested rigorously and have been used in Australia for over 25 years. Both systems have their advantages. The Promatect board range allows for off site fabrication, and a neat and tidy install. The Cafco spray option for fire rated duct's is the most cost effective option for large and small projects. Selecting an experienced spray contractor is important to achieving a clean and efficient install.