I have concrete,
You can power wash it ( when the dogs been on it ) or any thing else drops on it .......
Tarmac & oil leaks do like each other
It's load bearing if done right
( you can safely jack up the caravan or tug knowing the jack wont sink into it on a hot summers day )
If you are botherd about the colour ?
You can paint it
If you go for coloured concrete ( the whole batch want's to be coloured ) not just the top skim
then if you knock a lump out of it, it's still the same colour........ ( my opinion )
When I had our garden done I had a base for the conservatory & new drains put in & a base for my shed done all in the same time to save on any extra work later on so they got put in 6"+ reinforced concrete aswell
About 30 tons of garden was removed & 24 tons of concrete put back in.......
I don't intend to replace it in the near future ..........
Planning changed after the
2007 floods have a read & see if it will have any effect