Abstract: Hydrophobic properties of different roofing coatings are studied. It is shown that the value of interfacial angle sufficient to exhibit of a surface unwettability is significantly depended on the temperature of coatings. Water meniscus around the local area with unwettable coating has been obtained experimentally. Height of meniscus for graphite powder coating is ~4.5 mm. The curved surface of the water meniscus have enhanced attraction of dirt and powder fine particles.