This is a little complicated but when combined with the map is relatively straightforward.
When travelling along the A470, Cardiff to Merthyr Tydfil road, take the exit marked Ynysybwl into Pontypridd. Follow this road round until it runs right and take the first left signposted for Whiterock Estate. Turn left into Graigwen Place at the top, then take the first right and follow the road steeply up the hil for half a milel. Turn right into Whiterock Avenue, then the first left into Whiterock Place and then the first left again into Lanwood Road.