tjr wrote:
Hi All,

Thanks for the advice. On closer inspection the fall was more like
20mm so I've gone for the mortar option to get it level. It will be
sited very close to a shed so the effect of a slope on the verticals
would show up. I bolted down to the slabs as I didn't want to take any
chances with it moving.

Just gotta wait for the mortar to set before I can build it now!

An additional reason is that you would have problems with rainwater
collection - would be forced to the lower end.

--
CTC Right to Ride Rep. for Richmond upon Thames