A highly scalable pad-dry-cure coating technique was used to coat glass and carbon fibre fabrics with GNP at two different concentrations. This process can coat fabrics at a very high speed of ~150 m/min 51, 52 . The SEM images of uncoated and GNP-coated glass and carbon fibre fabrics with different GNP concentrations are shown in Fig. . The surfaces of uncoated glass and carbon fibres are smooth and clean (Fig. and). After coating with GNP, the surface roughness of coated fibres is noticeable, as seen from Fig. and, which may be due to the fact that GNP is attached to the fibre surface by mechanical interlocking. As seen in Fig. and e-f, GNP flakes were randomly distributed on glass and carbon fibre surfaces with some aggregated GNP in some areas. Aggregation occurs more for 5 wt.% GNP-coated fibre surface (Fig. and) compared to the 1 wt.% GNP-coated glass fibre surface (Fig. and).