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Short Summary
Main recommendation: Beginners should avoid Ultra Color grout (a fast-setting, sealer-included grout) and use the more forgiving Mapei Keracolor unsanded grout instead; Ultra Color is only for people with a team or a lot of experience, with a helper. The presenter warns that Ultra Color has a short working window that can leave grout too hard to wash off if left too long.
Key Points
- Ultra Color grout includes a sealer in the mix and sets rapidly, which makes it harder to correct mistakes once applied.
- Mapei Keracolor is described as an unsanded grout with a longer working time, giving a solo DIYer room to finish, clean tools, and return to wash the grout.
- Ultra Color is described as best suited to people with a team or substantial experience.
- Keracolor allows corrections even about half an hour after application: the grout can be scratched out with a grout removal tool, remixed, and patched.
- Unsanded grout is generally the right choice for shower walls, according to the presenter, who uses Mapei Keracolor unsanded grout in his own videos.
Details Worth Noting
- Concrete instructions:
- Choose Keracolor if working alone or with limited experience.
- If using Ultra Color, mix only enough for one wall at a time so it can be worked and washed before it sets.
- Follow the Ultra Color label: apply, wipe with a grout sponge within 15 minutes of application, or risk it setting too hard to work with, per the presenter's warning.
- If using Ultra Color, have a second person help, and apply a grout sealer afterward.
- Work quickly; the presenter says an experienced two-person Ultra Color job can be done in under 10 minutes, and that waiting more than 15 minutes before washing can make it very hard to remove; Ultra Color should not be a single-person job.
- Avoid working Ultra Color in hot conditions, which the label warns against.
- Ultra Color fills gaps from 1/16 inch up to half an inch.
- Ultra Color costs a few dollars more than Keracolor, and the presenter personally considers it the better grout when used correctly.
- The presenter notes that many buyers do not read instructions, so the warnings matter.
Bottom Line
Match the grout to your experience: Keracolor is the forgiving choice for solo DIYers, while Ultra Color demands speed, a helper, and careful batch sizes.
