A superhydrophobic surface with self-cleaning properties can be fabricated with a combination of both low surface energy and the proper surface roughness. In this paper, the possible effects of structural parameters of weft knitted fabrics were applied to produce surface roughness while a fluorocarbon compound was coated on the surface in order to generate low surface energy. In addition, to create dual surface roughness on the polyester fibers, chemical etching with alkaline hydrolysis and application of nanoparticles were investigated. The water repellency of the treated samples was evaluated by 3M, tilting angle and contact angle hysteresis.Comparison of a smooth polyester film and the knitted fabrics showed that various knitted structures and stitch densityhad a great effect on superhydrophobicity. Polyester alkaline hydrolysis efficiently roughened the surface and after the fluorocarbon coating, remarkable improvement in repellent properties was observed. Thus, there was no necessity to use nanoparticles.