Dog Urine Stains On Marble Tile

by L. Choma
(San Dimas, CA)

QUESTION:

Had marble floor tile installed and had it professionally cleaned and sealed (think this was a bad idea), however, our pets have had accidents on the floor.

The urine left a few marble stains that I cannot get out.

I have used only water to wipe the area down, but the stains come back.

Perhaps whatever the technicians used to seal the floor is what is the problem. Any advice? Many thanks.

ANSWER:

If your marble floor tile was properly sealed, then liquids should not absorb and stain... not easily anyway.

An acidic liquid like urine could etch the marble (which many mistake for a marble stain) and then also cause a stain.

Etching: marble is corroded and physically damaged from contact with an acidic substance (like urine). These spots are lighter than the marble. Many call them "water spots".

Marble Stains: result when something absorbs into the pores of the marble. These spots are darker than the marble.

What happens is the urine etches the marble, which damages the surface layer of marble including the sealant. So, the sealant is not the problem.

If liquid is on the marble long enough it may absorb and stain too.

Yes... stone floor tile or countertops can still stain even when sealed IF a substance is left on the surface long enough.

How long is "long enough"? Well that depends on the stone and the substance/liquid, but it could be anywhere from an hour to 10 hours or more.

Most liquids (except oils) will evaporate prior to staining a well-sealed surface, but just FYI... stains can still occur. Sealing is meant only to give you more time to clean a mess... not absolutely prevent marble stains.

So, you almost certainly have some etching and if the spot is yellow, then you have some staining too and probably odor as well.


The solutions for marble repair to restore etch marks depend on whether the marble is polished or honed.

And of course, since they are different issues... the solutions for removing stains is different than for etch marks. You'll have to remove the stain first though.

I'd recommend you get the Cleaning Marble Secrets Guide, which thoroughly covers both staining and etching for honed and polished marble along with everything else you need to know to properly maintain marble long-term, product recommendations, etc.

We have separate guides for just stains and just etching click here for those, but the "Secrets" guide includes those other two guides and has way more info.

Removing urine stain odor is a bit tricky too. There are many odor eliminators out there for urine and other substances. I would recommend using one of the more natural brands that employ enzymes or micro-organisms.

The issue for removing urine odor from a marble stain is whether the product is too acidic or alkaline, which may damage the marble surface. The more natural de-odorizers usually are pH neutral.

Make your own odor remover with just plain baking soda. Make a paste with baking soda and water and apply the paste to the smelly areas.

Cover it with plastic wrap and seal around the edges with masking tape. Let it sit for a couple days. Remove the plastic and let the baking soda totally dry out. This should help quite a bit. Repeat the process a few times if needed.

If it doesn't take care of it, then try the specially formulated odor removers on the urine stain, but try to get some information regarding pH from an MSDS sheet for that product. You want the pH to be between 6-8.

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pet urine stain on travertine tiles
by: karen

i have just put down honed and filled travertine tiles which have been sealed with the sealer provided,my pet dog had an accident on them which has caused a dull patch on one of the tiles, is there anything i can do to remove the stain?
also, is there some kind of lacquer which can be put on the tiles to prevent this happening again?

========ANSWER:

There are products that will form a permanent coating over your travertine, but the vast majority of stone professionals agree that it's not a good idea.

Such coatings can change the look of you stone often making it look plastic, they wear down easily, create additional problems when maintenance is needed and do not not allow the stone to breath which is very bad for the stone especially on a floor. This can lead the stone to break down.

So, forget the lacquer idea... you'd regret it.

You just need to learn how to properly maintain travertine and how to deal with issues like etching, which is the dull spot you are seeing from your dog's acidic urine.

I'd suggest getting the Cleaning Marble Secrets e-book, which covers all aspects of marble/travertine protection, cleaning, maintenance along with DIY solutions for any problem you may encounter. Very comprehensive.

However, if you'd prefer to just learn how to fix dull etch marks on honed travertine, then you'll find complete step-by-step instructions in the Removing Etch Marks e-book.

The entire "etch marks" e-book is contained in the Cleaning Marble Secrets e-book as well.

Good Luck,
Ryan


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