Concrete for a greenhouse base (feddit.uk)

submitted 6 months ago by Cyber@feddit.uk to c/askuk@feddit.uk

15 comments fedilink hide all child comments

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?

you are viewing a single comment's thread
view the rest of the comments

[-] Cyber@feddit.uk 1 points 6 months 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 🙂

this post was submitted on 22 Feb 2026

17 points (100.0% liked)

Ask UK

1852 readers

1 users here now

Community for asking and answering any question related to the life, the people or anything related to the UK.

founded 3 years ago

MODERATORS

tom@feddit.uk

blackn1ght@feddit.uk