Single-bond effective medium approximation (EMA) is considered as an alternative method of modelling transport of condensable vapours in mesoporous structures. EMA is simpler and requires minimal computational time and effort compared to the network model. The effects of material structural parameters (pore size distribution, average pore radius, pore connectivity), fluid properties and operating conditions (relative pressure, total pressure drop) on vapour permeability are presented and compared with the corresponding results of the network model. In all cases, for a small pressure drop along the porous medium, there is an excellent agreement between EMA and network model. In general, EMA performs better for porous lattices with narrow pore size distributions, large fractions of small pores and high coordination numbers. The difference between the two models is detectable only in the transition to liquefaction regime, where the presence of the neighbouring pores becomes significant (neighbouring effect). When a high pressure drop is applied across the porous medium, single-bond EMA fails to be in close agreement with the network model. This is because a high pressure drop creates anisotropy in the network giving rise to a pressure distribution in the transverse direction. Consequently, a transverse flux is generated, moving along a direction which is perpendicular to the main longitudinal flux, resulting in considerably lower values of effective permeability. Finally, for a two-dimensional square lattice with a binary pore size distribution EMA was found to be in excellent agreement with the network model even near the percolation threshold. This is not surprising and relates to the well known fact that EMA predicts exactly the percolation threshold of a two-dimensional square lattice.