I was surprised to see how easy, and fast this process goes – however it is a bit messy. Just mix the grout, use your trowl to apply it in the grout lines between the tiles, and wait about 30 mins.
The 30 minute wait lets the grout set and dry slightly, then use a damp sponge to wipe the excess grout over the tiles.
This entire process took about 1.5 hours to do, however the grout needs at least 12-16 hours to fully dry – so I can’t do anything until tomorrow. I will seal the grout with “grout sealer” in two days – I figure two days is plenty of time to ensure the grout has fully dried.
Here are some pics: