Lime Etching on Quartz Countertops

by Chicago
(New York)

quartz countertop etch damage

quartz countertop etch damage

quartz countertop etch damage
quartz countertop color

QUESTION:

First of all, thank you for a fantastic site.

We have a large kitchen tabletop. All we know is that it is an Engineered Stone quartz countertop. It is light grey with darker colored dots. It has a shiny surface.

During social events, we have ended up with some rather serious etchings (we didn't conduct the lime test when we moved in).

The area covered by these etchings are approx. 10x10 inches and with your fingertips you can easily feel how the shiny layer is missing in that area, as well as being matte instead of shiny. Looks terrible.

The etching came after lime and soda stains were left for hours. Water doesn't stain at all.

We are wondering how we should proceed with repairing this etched area? Any tips or links much appreciated.

ANSWER:

Thanks for the compliment about our site. We certainly work hard to educate our viewers and provide the most comprehensive and unbiased information available about natural stone and engineered stone.

Etching and any damage to engineered stone / quartz countertops is troublesome.

The marketing for quartz countertops would suggest that engineered stone is essentially stain and damage-proof.

Unfortunately, that is not the case. It can be stained and damaged by many things. And lighter colors tend to be more susceptible to damage than darker quartz countertop colors.

Also, damage to quartz is often permanent since what gets damaged is the colored resin, which cannot be repaired or restored.

This is where stone has a big advantage over quartz countertops. Stone can almost always be repair and restored to like new. Quartz typically cannot be repaired.

The good news is that significant damage to quartz or granite is not common.

But what to do in your case?

Well, quartz is very hard like granite, so there aren't any DIY products that can be used to repair etching.

Most likely re-polishing the quartz countertop is your only possibility.

I'd suggest contacting the manufacturer (if you can determine which company made your tops) and inquire about repair options and referral to a certified tech/fabricator in your area that can work on it.

Wish I could offer more concrete and actionable suggestions, but quartz countertops can be tricky when damaged and you have to go case by case on most.

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quartzite (natural stone) etching
by: Anonymous

Hello

Maybe you can shed light on a debate about what is etching quartzite (the natural stone, not engineered). On one side of the debate are those that believe it is because the stone is not "true quartzite" because true quartzite is highly resistant to etching. What that side does not take into consideration though, is that the majority of slab products have a resin applied at the quarry before shipping (to prevent fractures, enhance color, etc.).

The other side of the debate believes etching is caused by a chemical reaction between the resin (not stone) and acid.

The last explanation seems to make the most sense because people with the same material are having different experiences with etching, where some etch and others do not. The second camp said it's because resins can have different ingredients depending on the country the stone was quarried/resined.

Appreciate your thoughts.

=== Comment: Well the debate will continue because either side could be right in any particular case.

Quartzite won't etch... some resins will and given that many/most are resined it's most likely these stones that experience the majority of etching problems.

However, it's possible to get mixed stones that don't behave like the traditional stone in that geological classification. Thus, it is possible that some stones labeled as "quartzite" could etch.

But these will be few... resins are most likely cause.

Quartz countertop damaged by Bostik grout?
by: Anonymous

My quartz countertop was installed 10 days ago. Today, my backsplash was installed by installers and home improvement store suggested they use Bostik grout. Many areas of the counter look like the polish has been removed. Is there any way to restore my countertop?

======= Countertop Specialty comment:

It may be possible to restore the shine to the quartz countertop, however, it must first be determined what happened and why.

I suggest contacting both Bostik and the quartz countertop manufacturer.

From Bostik you want to know the composition of the grout, chemical ingredients, etc.

Then from the quartz maker you want to know if anything in the grout would damage.

You may be able to have the surface repolished, but be sure to use an experience pro. Also, speak to manufacturer for specifics.

And you may try using Bar-Keepers Friend and/or a "magic eraser". Both have been successful at times removing weird spots from quartz countertops.

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