Carrara Marble Sealing Before Grouting

I have always sealed after but i have also done very little work with marble tiles esp dark colors esp on a floor.

Carrara marble sealing before grouting.

Now if your grout is a dark color then it can be advantageous to apply a sealer before grouting to keep the grout color from absorbing into the edges and discoloring the marble. Then i used a grouting sponge to wipe off any excess. I am using a grout from a store i never used before and they told me to seal the marble before grouting because the grout might stain the tile. Carrara marble needs sealed.

My guess is it wasn t sealed so a couple tiles soaked in some grout darkening them. If these deposits are close enough to the surface they can be oxidized by water absorbed during a shower creating a rust stains. Those couple of tiles must have been a bit more porous than the rest. Sealing before grouting is smart when using a dark grout color with light colored marble tile.

You ll have to replace those to make it look even. I prefer to seal mine before grouting. Hi guys i have a stone tiler fixing some carrara bianco in my bathroom. I used this sealer and just put it in a spray bottle and sprayed three coats on the ungrouted tile.

The edges of the tile are much more absorbent and if the grout color is dark then the dark water from the grout will absorb into the edges of the tile and create a picture frame stain.