Stephanie Nugent On Posted on September 9, 2022September 9, 2022 by Stephanie Nugent to FAQ Can GroutOnce! be used with all grouts? GroutOnce! can be used with any cement-based grout whether it is Portland or other types of cement. GroutOnce! is not for use with epoxy or urethane grouts and is not compatible with other grout add-mixes. NextNext post:Does using GroutOnce! void my grout warranty?