On 14/09/2012 09:33, Jeff Layman wrote:
I'm about to buy a new greenhouse - plain aluminium and toughened glass.
At least 8 x 10.

There seem to be several makes available (Halls, Robinsons, Eden, Elite,
etc) which all seem to be very similar. Any recommendations or things
to avoid from experience?

TIA

In the "Old days" we reckoned that 1/8th of the roof as vents.