What is a good sealant to seal the grout on my tile floors? The wife just spent a good amount of time and effort cleaning the grout on our porcelain tiles. I put on a sealant when I installed the tiles a few years ago, but it didn't seam to help much. I have an off white grout( not the best idea), and want to prevent the grout from looking dark and dirty again. Thanks
There's lots of good grout sealers available. One I especially like is 511 Impregnator by Miracle Sealants. Another quality company is AquaMix. They all work, even the cheapos. Expect to pay $35-40 per 28-32 oz. or so. Apply two thin coats or per directions.
None last forever, but you might get 5 years or so out of the good ones. However, if the grout installation was not done well, there's likely to be gazillions of tiny pores that will fill with dirt/grime. Grout is porous anyway, but a poor installation makes it worse.
An alternative is to apply a grout colorant which is epoxy base. You can change the color and it makes a permanent seal, (they claim). AquaMix makes this. It's a pain to do, but it works.
TILE GUY - retired- TROY, MI - Method & Product suitability consulting.