Born and raised in Maputo, Mocambique, Isaac was introduced to the traditional technique of woodcarving by friends in his neighborhood when he was twelve years old. In 1990, at the age of sixteen, Isaac moved to South Africa with a friend and immediately linked up with other young artists in the community. Shortly after moving to Durban, Isaac joined the BAT Centre where he worked as a professional, fulltime woodcarver.
In 1992, Isaac was exposed to the technique of woodcut printing, a medium he continued to embrace. Isaac said it was his experience as a sculptor which advanced his affinity and love of working and experimenting with woodblock printing. In approximately 1998, Isaac started exploring the technique of colour reduction woodcut techniques, which entails cutting away at the woodblock each time a new colour is printed.