Posted: 17/03/2014 at 15:21
They will try and grow under slabs, esp if the supports are just sand and not concreted in. Some Bamboo, like Sasa japonica are vicious and not suitable for small gardens. Most Fargesia behave. If the slabs are laid on their side a say they are 50cm deep then Bamboo will not grow under them.
The common and cheapest way to stop bamboo is to make a ditch where you want them to stop and cut any runners off when they emerge.