Ok, this seemed like a simple one, but damned if Google / Youchoob will give me a straight answer…
I’m putting up a greenhouse in a clay soil garden, so I want a nice concrete foundation (ring, like for a house, not a slab)
What mix do I need for that base, assuming it’ll be underground / water and I’ll put a row of block on top for the base to screw in to?
And… if it’s easier than dragging stuff through the house, can I get away with just bags of postcrete?
Why not just put some patio slabs down? Quicker and easier and if you find some second hand probably cheaper too.
I think it would destroy itself. The ground isn’t stable as the clay changes so much between wet & dry, so I’d be laying a large base under the slabs… in which case… no point in the slabs 🙂