"'Mike'" wrote in message
...
(We scrapped the metal base BUT built a small brick wall to mount the
greenhouse on and with Masonry drills, fixed it to the bricks. That was
about 10 years ago and it has not moved an inch. Brick wall was one brick
on edge.)


Whichever of the two suggested methods you use
- do not forget to ensure to ensure you start off with a level playing
field.
(recently discussed here at length !)
I would go for the metal base alternative myself but if you lay a mean
brick, then Mike's alternative is worth considering.

Regards
Pete
www.thecanalshop.com