On 17/02/2012 10:39, Jim K wrote:
as per title - how would I fix "decorative" treated timber to a low
concrete block garden wall?

Ideally I'm imagining a nail gun for speed - but what sort of brads/
nails are needed for secure fixing and longevity?

Cheers
Jim K

I think I'd screw batons into the wall and nail the timber to them.