The Brew Cabin

Posted: **Wed Mar 02, 2005 10:03 am**

I am after some advice, I want to pave my driveway with sandstone flags, I have been advised that 35mm flags are adequate however I am paving over an existing crazy paving base. Do I need to break up the existing paving to form a core base or can I just lay my slabs on top of it?. Do I need 50mm+ slabs instead of 35mm?. Thanks in advance

Posted: **Wed Mar 09, 2005 2:01 pm**

35mm flags won't last more than a couple of weeks on a driveway, unless they were to be laid on at least 100mm of concrete.

I'd also be wary about laying over existing: will you have the correct levels, bearing in mind that you need to be at least 150mm below DPC where the drive abuts any building?

The Brew Cabin

Sandstone driveway paving - Paving