This involves adding either sanded or un-sanded ... you can choose powder grout. It offers up to two hours of working time,' ...

The phrase "you get what you pay for" definitely applies to grout. While pre-mixed grout from a home center ... consider ...

Once you’ve chosen the grout color to suit your space ... If you want to save yourself some time, you can buy pre-mixed grout, though it's more expensive than purchasing the powder alone.

Choose shrink-resistant sanded ... pre-mixed, although it will need to be stirred up due to settling. It has a long, slow cure time of up to seven days. The other grout choice to consider is color.

This can be disappointing considering how carefully you chose the color you originally wanted. The reason for this is because most of the grout being used in tile work is the standard sanded grout.