FAQ | Mapei

Topic Questions

How much working time do I have with Ultracolor Plus FA?

Once the grout has been mixed, you have 30 minutes to one hour of pot life.

How soon can I use my shower after grouting?

24 to 48 hours

I’m using standard cement-based grout. What can I do to make my grout more stain-resistant?

Cement-based grouts have been around for decades and are very reliable, but are also the most porous and stain-susceptible of all the grouts. Instead of using just plain water to mix the grout, use MAPEI’s UltraCare Grout Maximizer, a water-based additive for grout that fortifies the flexibility and stain resistance of the grout.

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What size grout joints can Keracolor S Sanded Grout be used with?

1/8" up to 5/8"

Grout Calculator

What size grout joints can Keracolor U Unsanded Grout be used with?

1/16" to 1/8"

Grout Calculator

What size of grout joints can be used with Ultracolor Plus FA?

1/16" to 3/4"

Grout Calculator

Why did my grout dry lighter than the color I purchased?

There can be different explanations of why this happened. The grout may have been washed too soon or too much during the cleaning process, causing pigment to be removed from the grout. Or, the grout powder may not have been dry-blended before mixing in order to avoid color variation.

Why does my grout bleed and come out when I rub my finger on it?

This indicates that too much water may have been used either in the mix or the cleaning process.

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