For the first time an innovative approach to manufacture flame shield coatings by producing thin polyaramidic nanofibrous sheets via electrospinning is presented. Nanofibrous mats with a well-defined alignment provide a thin, compact but pliable layer of intrinsically flame-retardant material. The electrospun membrane (about 0.4 g/100 cm(2)) displays good mechanical properties and easy handling and could be applied onto epoxy-carbon fiber composites to modify their flame behaviour. Conecalorimetric tests show time to ignition doubled for the coated material and a dramatically reduced ability to propagate fire once ignited. Finally, addition of a simple polyaramidic nanofibrous membrane is proved able to change the flame behaviour of a composite from a high-risk material class, to an intermediate one.