Grout Sealants Home › Forums › Public Forums › General Plumbing › Grout Sealants This topic has 1 reply, 2 voices, and was last updated 24 years, 10 months ago by david. Viewing 1 reply thread Author Posts 2 Feb 2000 at 1:38 am #272411 MasterPlumbersKeymaster Several years ago I was given a product by a Mason (I believe it was called “Through Seal”)that sealed bathroom grout and it is permanent. Now I can’t find it for my other bathroom and no one knows about it either. Thanks 13 Feb 2000 at 3:14 am #285699 davidParticipant Look up a company named SIKA, purchase a product called Sikagard 702w. It is a siloxane and works excellant on masonry and cement based products. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In