Posted: 17/01/2013 at 18:50
I was a complete novice but reasonable at DIY, I ordered a 12' by 10' GH and then started on the ground prep. My GH stands on paving slabs which are 2' square. It has gravel that is 3-4" deep on the inside with a paving slab 'path' down the middle. Having studied numerous laying paving slab vids on the net, acquired the necessary tools, I started laying the slabs.. It looks so easy on the videos to mix up a dry sand/cement mix then lay the slabs on it, trust me it is not!!! If I was to do it again, I'd dig the trench a foot wide roughly level, and then fill with some hardcore, following that I'd pour self leveling concrete into the trench and let it dry.. Using slabs seemed like a good idea, but it was a hell of a lot of work! I did ask a few builders/paving firms how much it would cost just to lay the slabs, worked out about 500+ hence why I did it myself. I grow everything in big pots in the greenhouse, easier to change soil if there is a problem.