FeRh in the CsCl structure is an interesting material with a tunable magnetostructural phase transition close to, or just above room temperature. On heating through the transition temperature the magetic order changes from antiferromagnetic (AF) to ferromagnetic (FM). Very thin FeRh film (<12nm) was shown to have a stable ferromagnetic state coexists with the well known anti-ferromagnetic phase at room temperature. To completely understand this unexpected mix state and the influence strain has on the unusually broad magnetic phase transition we propose to fully investigate the magnetic depth profile across the FM-AF transition using polarized neutron reflectivity.