Coming out of the airport complex, follow the signs to Johannesburg. Start initially in the right hand lane.
Soon you will be on the R24 highway. This road then flies over and joins the N12. (You do not take any turnoff - just go with the flow.)
On the N12, get into the second or third lane from the left. You will then automatically take an off ramp. As you go off to the left, the road immediately splits and you take the right fork. The road narrows to one lane and you go over the N3 highway. As you cross the highway, you go left and that takes you around and down onto the N3.
You are now heading north. Stay on this road and ignore any turnoffs to Johannesburg or Pretoria. (The signs tell you that you are heading for Bloemfontein and Roodeport - that is what you want.)
The N3 swings around from north to west and changes its name to the N1 (also known as the Concrete Highway), but you will not have turned off anywhere. You will still be on the same road, just a different name.
You will go past a turnoff to Rivonia. Ignore that. Take the next off ramp, about 7 km further, to William Nicoll. Turn right over the highway traveling in a northerly direction. Pass the Monte Casino (Tsogo Sun) on the right. Pass the Fourways Shopping Complex on the left and Mc Donald’s on the right. Next set of traffic lights turn left into Uranium Road. At the BP garage turn right into Bush Will Road. Go Straight over the round out and down the road until you get to a t-junction. In front of you is a complex called “San Raphael”, turn right. We are number 27 on the left, next door to San Raphael.