Water repellent is a coating added to fabrics at the factory to make them water-resistant (hydrophobic). Certain types of fabrics need to be re-treated to maintain water-repellency
These materials are made flame-resistant by the application of flame-retardantchemicals. A chemical additive in the fiber or treatment on the fabric is used to provide some level of flame retardancy. ... This reaction is triggered by the heat of the fire and the amount of time the fabric is exposed to the fire.