In article ,
says...

Justin Thyme wrote:
I am thinking of buying one of thee:
http://www.greenhousesdirect.co.uk/G...est%206ft/6x6/
and erecting it myself. It will be placed on concrete paving slabs. The
manufacturer write of anchoring down the greenhouse, what does that
entail exactly?

Thank you for all replies. I will bolt it to the 18 inch square paving
slabs.

In a gale a GH is like a large sail; for which a paving slab is a very
lightweight anchor IMHO. You really need a rigid, foursquare solid base
to hold every right angle true under wind pressure.

If it distorts evn slightly, the glass panels are likely to either
crack or pop out.

Janet