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Concrete for a greenhouse base (feddit.uk)

submitted 2 days ago by Cyber@feddit.uk to c/askuk@feddit.uk

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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?

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[–] Cyber@feddit.uk 1 points 1 day ago

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 🙂