Should Marble Be Sealed Before Grouting
Yes afterwards would ensure grout is sealed but then why do people insist on sealing before grout.
Should marble be sealed before grouting. I have read that polished marble shouldn t need to be sealed first. Then i used a grouting sponge to wipe off any excess. This is usually polished marble installed as larger slabs and not as individually cut tiles. Polished marble shouldn t need sealing before you apply grout but tumbled marble does it s so.
Before you consider sealing your tile keep in mind that there is marble that does not need to be sealed. I have always sealed after but i have also done very little work with marble tiles esp dark colors esp on a floor. I used this sealer and just put it in a spray bottle and sprayed three coats on the ungrouted tile. While not all marbles are delicate most are highly absorbent and thus easy to stain and etch.
Because marble is a natural stone and will absorb color you need to seal them before you grout to prevent the grout from discoloring the tile. Is that because honed has a higher tendency to stain. All natural stone should be sealed prior to and after grouting you may end up with grout haze or staining to the surface of your tiles your fixer should already know the potential problems. Sealing the tiles and grout will significantly extend the life of your marble shower as well as making it much easier to clean and maintain.