This paper describes a spray impingement model which is formulated on the basis of literature findings and mass, momentum and energy conservation constraints. The model involves the analysis of the relevant impingement regimes and the associated post-impingement characteristics. In order to reflect, to some extent, the stochastic nature of the impingement process, a random procedure is introduced to determine some of the quantities representing the post-impingement status. This allows secondary droplets resulting from splash to have a distribution of sizes and velocities. Numerical simulations for several test cases are presented, showing satisfactory agreement with experimental data.