Yet another factor to consider is FRP laminate construction. Glass content and panel thickness can easily affect the flame spread and smoke values obtained in FR tests. Lastly, it is critically important to test the FRP panel in the configuration it will be used. Otherwise the results will not be representative of actual performance in the application.

Fire retardancy is a critical consideration in many composite applications, so be sure to work hand-in-hand with material suppliers during the design process. This will help ensure the best performance in fire tests, and, ultimately, final use of the product.

Please note that there are many companies that supply resin and other materials to the industry. For a listing of these companies, see the ACMA Buyers Guide or, for ACMA members, the ACMA member directory. Both can be found at

An NFPA 286 room corner burn test on ASTM E84 Class A flame spread index resins.

Disclaimer: Opinions, statements and technical information within the Tech Talk column are that of the authors. ACMA makes no warranty of any kinds, expressed or implied, with respect to information in the column, including fitness for a particular purpose. Persons using the information within the column assume all risk and liability for any losses, damages, claims or expenses resulting from such use.