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. Did this answer your question?Yes NoAdditional Comments:Send Feedback Post navigationPrevious post: Does using GroutOnce! void my grout warranty?Next post: Is Mighty Indigo safe on marble and granite? Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.