Sunnat namaz should be read in two rakats. 2 rakaat fajr sunnat should be read before wajib prayer. 8 rakat zuhr sunnat should be read before wajib prayer. 8 rakat asr sunnat should be read before wajib prayer. 4 maghrib sunnat should be read after wajib prayer. 2 isha sunnat should be read after wajib prayer.