Our driveway is part concrete (1m path around the house) and part tarmac.
Total area is 150 sq metres.
We want to install gravel.
The options seem to be: (1) pull up the existing surface and install base plus gravel OR (2) surface over the top of both with bonded or bound composite.
(2) seems the least disruptive and quickest option. But possibly 2 or 3 times the price. I am concerned about cracks opening up in the composite where the tarmac and concrete meet over time.