Floor of a greenhouse

Hi, Sorry to hear that, what was the base laid onto? I would say the problem lies mainly on the thickness of the base and what it is laid on. Due to the accelerant in postcrete I would imagine it difficult to lay, but would have personally used a normal concrete at least 2 inches thick or decent concrete slabs depending on what the ground is like. Thanks.

Hi, For a greenhouse regular cement/ ballast mix will be fine at a minimum thickness of approx three/ four inches. Remove what's there and dig down deeper if soil. You could break up the old concrete and use it as hardcore. Hope this helps!

It should of been Made with genral purpose Portland cement and 20 mm ballast 4:1 ratio or 3 stone 3 sand 1 cement and be at least 50mm thick he should of dug down to a reasonable depth at least 100mm put a layer of crushed stone as a base 50 mm And then poured a 50mm concrete slab on top.

I am sorry for what had happened but in this case the concrete not lay a light mesh as it requires one to stop the concrete cracking when it gets older and improve your spending.