Need help: grout not drying
I grouted my shower last Saturday. On Sunday afternoon, I noticed that some of the grout was still darkened (not dry). See photos below.
Some background that might in part explain this: A couple weeks ago while I was tiling the wall in the photos, I noticed a drip coming from the spout where the shower head protrudes and running down the Redguarded wall. I know that I literally saw it begin, as I had been at it for a couple hours and saw a little stream down the wall. I figured I had bumped something in the valve that controlled the water shutoff.
Mr. Weedy, who does all the plumbing, was out of town, so I found the shower head pipe thing, screwed it into the wall, upturned it, and hung a small bucket from it to catch the drips. It collected maybe 1/2 gallon of water per 24 hours.
So fast forward to Sunday. The pattern of non-drying was consistent with the drips from the outsticking pipe getting onto the wall and running down the grout lines (some of the grout was still dark all the way down to the shower pan). So Mr. Weedy pulled off the pipe, taped it up with plumber's tape, tightened it up, and put the bucket on the shower floor, so no more water has gotten onto the wall.
Now, on Tuesday morning, the grout coloring has not changed a whit.