We have an all white marble shower with white grout. Looks great when clean over time it gets dirty from general shower use and but every month +- it has to be scrubbed down pretty extensively due to discoloration. it's not necessarily hard to clean but is there anything i can put on the grout to seal it and make cleaning easier or extend the time between deep cleanings?

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Posted by tigerrage08

Houma,LA

Member since Feb 2008

602 posts

Posted on 4/27/26 at 10:51 am to Randall Savauge

Following. I am having the same issues. I just cleaned mine with baking soda and peroxide. I'm not sure how else to battle this.

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Posted by CatfishJohn

Member since Jun 2020

20326 posts

Posted on 4/27/26 at 11:52 am to Randall Savauge

Penetrating, water-based grout sealer.

And it doesn't last forever.

Grout sucks.

ETA:

Once you clean it, let it dry for a couple days before applying. I even put a dehumidifier in my shower to speed it up. Then after applying I let it sit another couple of days.

This post was edited on 4/27/26 at 11:54 am

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Posted by Clames

Member since Oct 2010

19575 posts

Posted on 4/27/26 at 1:52 pm to CatfishJohn

I put 2 coats of a water-based penetrating grout sealer for my shower and kitchen backsplashes, zero issues with staining and it's been about 2 years so far. I use an after-shower spray so I haven't really had to scrub the tiles to clean them either, just wipe down with a soft cloth and some Spray Away a few times a month. The tub section gets scrubbed only. The grout sealer also seems to have kept the silicone caulk joints clear too though probably more to do with what silicone I used than anything else.

This post was edited on 4/27/26 at 1:53 pm

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Posted by Maniac979