Hey All,
As I mentioned in another tread I've just dug up part of my tarmac driveway to run a new mains and had a question about the cold lay tarmacs you can buy.
The trench I've dug is about 30cm wide and about 70cm deep. When I cut the old drive out it was a thin tarmac surface on top of rocks (hardcore?) before to got to the soil. I'm not sure what exactly the hardcore layer consisted of but it was a bugger to get through with the angle grinder and the breaker on the sds drill.
My question is once I've back filled all the soil into the trench and tamped it down do I need to put another hardcore layer down before I add the cold lay tarmac a you can buy? Someone told me you can just put it on top of the soil but I'm dubious about this and would worry about it sinking over time with the car traffic over it.
So do I need a hardcore level and I'd so how do you mix this up? Stones and concrete mix, just concrete etc?
Cheers
Steve
As I mentioned in another tread I've just dug up part of my tarmac driveway to run a new mains and had a question about the cold lay tarmacs you can buy.
The trench I've dug is about 30cm wide and about 70cm deep. When I cut the old drive out it was a thin tarmac surface on top of rocks (hardcore?) before to got to the soil. I'm not sure what exactly the hardcore layer consisted of but it was a bugger to get through with the angle grinder and the breaker on the sds drill.
My question is once I've back filled all the soil into the trench and tamped it down do I need to put another hardcore layer down before I add the cold lay tarmac a you can buy? Someone told me you can just put it on top of the soil but I'm dubious about this and would worry about it sinking over time with the car traffic over it.
So do I need a hardcore level and I'd so how do you mix this up? Stones and concrete mix, just concrete etc?
Cheers
Steve