Abstract 
The contribution deals with pre-treated blasting surfaces of steel sheets of grade S235JRG2. Four types of blasting materials were used: steel shot and steel grit, as representatives of metal blasting materials, and brown corundum and demetalized steel slag, as representatives of non-metal blasting materials. Used materials had two shapes: globular and irregular-sharp shape. The quantitative roughness measurement by means of standardized (EN ISO 4287) roughness parameters with contact profilometer was realized. The particular character of blasted surfaces was analyzed by light microscopy and scanning electron microscopy (SEM). Special attention was paid to the comparison of selected methods of blasted surfaces evaluation.