Hello, I had to replace some concrete in my basement because I redid the plumbing under the slab. How long do I have to wait to let the concrete cure before putting down the XPS?
Outside concrete that might be driven on or basement walls that get soil loads against must cure to gain the necessary strength to resist such loads. For an indoor floor repair, if today is the day after and it has set, you're good to go. The concrete will continue curing and gaining strength over time, but there are no dimensionsal changes going on that will affect your work.
thanks, so basically if I can walk on it, I will be okay.