Hairline cracks in the concrete also I want to fill . Did assume some concrete / brick sealer waterproofing was the thing to try .
So a small number of drops did get the floor . Didn’t put a bucket to collect . But it is a small amount . Just checked it now - whilst not dry it’s clearly drying out . Considering how much rain we had and how quick it’s drying does kind of confirm it certainly isn’t a lot of water .