Hi Folks,
We have a pretty long driveway that we need to lay tarmac on. As its going to be fairly costly because of the length, we're looking to save money if possible (without compromising on longevity or anything structurally important!), so my question is:
If the 'norm' is to put say a 25mm fine wearing coat on top of 50mm base coat, is there any reason why you would not want to just use a single 70 or 75mm of base coat?
I'm led to believe that the finer wearing coat is more expensive but its main purpose is just cosmetic as it gives a finer, smoother finish. Our drive is on a fairly steep hillside as is, so I'm almost wondering if a slightly rougher finish might be advantageous for grip and its not the end of the world if its not a silky smooth finish! However my initial searching for construction methods seems to come up with the fact that roads do have the wearing coat.... so there must be a pretty good reason for it :-)
I'd be grateful if anyone could comment. TIA
Gareth