In my patio area I have a L shaped zone separated by one pillar. So 2 rectangles of
235mm (two std bricks width) by 1290mm long and the other by 1640mm long.

What types of relatively simple capping materials can be bought either to the exact length or to lay and cut, to replace the current setup.

It needs to be paintable as well. People have mentioned some sort of foam material that can withstand feet on it or tools placed on it.

Any ideas, materials and store recomendations in Melbourne for this?