A full 28 days is required to allow the slab to cure before it can be stained. This allows moisture to dissipate from the slab, which would otherwise reduce the effectiveness of the acid stain in penetrating the surface of the slab. Above and below, the concrete block wall is masked prior to washing and staining the slab.
The key to a well stained slab is a clean slab that will not repel the stain. The slab was washed for two full days from 7am to 10pm, as shown in the following video and photos:
Terry emailed me his photos after midnight when he arrived home. It was a good day and a good night for washing a slab. Terry says he likes the way water flows over a slab and can watch it for hours. I think I could too.
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