The Brew Cabin

Posted: **Tue Aug 12, 2008 8:42 am**

I have recently had an aco drain fitted to the drive. It was bedded on concreate and the drive re-instated round the drain with tarmac. When it rains some of the rain is soaking into the tarmac and away. It has been a week since the tarmac was laid. The rest of the water does not and stays on top and eventually goes into the drain and away. I thought tarmac would not let water through?. It was Patchmac pre-bagged tarmac that was fitted. Does this matter as the water will soak through into the water table anyway?
Thanks

Posted: **Tue Aug 12, 2008 7:33 pm**

Ah, good old deferred set tarmac!!

It is normal to observe water going through freshly liad tarmac - this will lessen with time as the surface seals over with fines and detritus, basically blocking up the porosity of the surface.

Give it a little more time. See how you get on, but be aware, the material you have used is not the best.........

The Brew Cabin

Driveway drainage