How long should I wait before I can get onto a 5 inch thick slab of newly laid concrete.
Its not raining but its been plastic sheeted just incase, and there is no imminent frost.
Would a week be OK, as I want to remove the shuttering and get the soil and grass laid around it. And then a shed put ontop of it.
It should certainly be hard enough in a week for most purposes.
24 hours should see it hard enough to walk upon gently, with perhaps some board to spread your weight and hard enough to remove the shuttering with care. Two to three days should see it hard enough to gently build a prefabricated hut upon.
A grand designs said a few days for concrete compared to the 3 weeks it was going to take for some limecrete base (which they had to insulate with straw to keep the winter frosts off it)
If just walking, at this time of year, two days.
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