How to save between 2 and 5 kg per aircraft / microlight?

By using DIAFIREWALL, a technology transfer from the AIRBUS A380, in for the benefit of “light” aeronautics.
This 2.5 mm thick complex contains a 0.5 mm sheet of mica (480 g/m²) + 2 mm of ceramic felt, for a total weight of only 1 kg/sq. m.
Mica is an inert and non-toxic material, colour: grey, it resists a naked flame of 1100°C for 4 min. Ceramics (white) resist a temperature of 1600°C.