Usually this is only a potential problem with the grout in the seam between the countertop and tumbled marble backsplash.
Tumbled marble sealer.
The grout lines must at least 1 16 inch full and tight or water will get behind the tiles and ruin everything.
Sealing the grout is actually more important than the marble especially behind the sink as you note to keep it from absorbing water and breaking apart.
The one exception here is for sealing white marble shower tiles.
Well sealed tumbled marble tiles will be considerably more resistant to mold mildew and other tile based filth than unsealed tiles.
The tuff duck marble sealer comes in a black spray bottle with a duck on the front.
It s safe for use with food and you can use it on your exterior and interior marble.
Tumbled marble is great for the shower and your installer is correct.
Since marble countertops grace many kitchens the sealer will also be certified safe for use where food is prepared.
This professional formula offers a penetrating solution that is delicate enough for use on granite and white marble.
The best marble sealer is going have low or no vocs volatile organic compounds and be environmentally friendly.
As a general rule.
We recommend the tuff duck marble sealer for household decor items and the patio.
Hands down the best marble sealer for shower use is black diamond s nex gen sealer.
If you re looking for an great way to protect your tumbled marble tiles from falling victim to excess moisture you should consider sealing them.
It s a non toxic and non corrosive sealer that works to protect your granite and other natural stones surfaces from liquid stains oil grease and even germs.
A proper shower installation is key though.