"Cinar Interiors, Inc. your statement of prone to warping would be corian not engineered or quartz stone."

QSCCRE:

I suggest you read page 6 of the Caesarstone Fabrication manual. They warn against stoage that will encourage warping. Twice:

"Slabs must be stored in a manner that prevents warping. Use at least two support beams at an angle of 15 ̊ from the vertical, measuring a height of 50” (1,300mm), and at a distance of 70” (1,800mm) apart.

Slabs should be stored so that the product is kept in a perfectly uniform manner that minimizes warping."

Continue on to page 7 and you're given the manufacturer's acceptable level of warpage in sheets:

"Warpage: length 1⁄8” (3mm), width 1⁄16” (1.5mm)"

On page 2/9, you can find DuPont's acceptable warp limits for Corian.

You really should do the research required to substantiate what you say before running your fingers over your keyboard.

"In terms of scratch resistance, the only component of the countertop that can be scratched by typical kitchen items is the resin - the quartz grains are very hard. The resin is present as a thin matrix between grains of quartz. The quartz grains protect the resin to a large extent: under normal (ab)use there is no way that a long continuous scratch can be formed, and there is no way that a deep scratch can be formed."

A:

Welcome to the forums.

I've never read such a nonsensical or more untruthful statement than yours quoted above. Catastrophic scratches in engineered stone are rare, through the quartz and resin, but certainly possible. Misinformation such as this does the quartz industry no good. Customers read this and mistakenly believe quartz is "bulletproof". It is not. It is a fine product whose limitations should be spelled out clearly to consumers. It will scratch and the scratches are difficult to remove.

This scratch in engineered stone goes through the quartz and resin and can be felt with a finger nail:

I have a much lighter color caesarstone, and have had some instances of things "staining" the surface, like wine, blueberries etc. No man-made cleaner or amount of scrubbing I tried would remove the stains, but using baking soda and lemon juice completely removed the stains. Most likely not going to help your issue, but worth a shot!

"Subjectively, 16% resin seems reasonable based on what I see using a magnifying glass."

A:

Wikipedia disagrees with you.

Joseph, my warping comment was directed towards man made quartz. The resin used in man made quartz countertops is a plastic. It is prone to melting in heat above 300 degrees F.
A hot pan set on top of the counter could cause some warpage or damage to the surface.

Have I seen it? No, because everyone I know uses hot pads. I guess I'm the only nut job that places hot pans on top of my counter...but I also know that my granite will absorb the heat and cool the dish faster.

Ok..I have stains that will absolutely not come out, I've used baking soda, non-abrasive cleaners, I will never use bleach, for obvious reasons, I've been reading the comments, what's the bottom line? Is there or isn't there a way to remove the stains without damaging the surface of the Quartz countertops?

Joanne:

Have you tried soaking the stain with #40 beauty store peroxide, covering the peroxide with Saran Wrap and taping the edges?

Joanne- for reference for other people that maybe shopping Quartz do you know the manufacturer and name of yours?

Joanne Landucci - can you post a picture?

Are these new countertops?

Joanne Landucci are you sure it is a stain and not physical damage?? See here for more information

https://stonebenchtopcleaner.com.au/sds/Quartz_Care&Maintanence_Essentials_(2018web)DSA_Rev4.pdf

I may be the odd ball since I totally avoided quartz and went with solid surface by Wilsonart.

Due to some research, I was timid about quartz, and felt that solid surface was right for me. I was not being brand specific, but happened to chose Wilsonart solid surface over DuPont Corian -- solely based on the metallic-flecked sparkle option Wilsonart offered in either white or light gray.

I chose the white and I am still in deep love with this product 18 months later. It is so lovely, not nearly plastic-y feeling like the old stuff.

(I did choose an undermount sink to make it look more like stone though :)

Sadly, I do feel people are avoiding solid surface so unnecessarily. I believe the newer acrylic bonding makes all the difference, providing a closer-to-stone feel. And you'd have to try ridiculously hard to ruin this stuff. I'm totally happy, not one regret.

spisland - I have always loved Corian. And I love the new products that have come out too.

Solid surface remains virtually un-stainable compared to natural stone and engineered stone.

Problem with brown stain on quartz.

Hello,

I have almost white glossy quartz countertops in a bathroom and a kitchen. Put in 4 - 10 yrs ago in different renos. Don’t know manufacturers. Really great products and very happy. Have developed ring shaped light brown stains in several areas. After reading majority of this string , it seems these are likely caused by organic soap.

Have only been brave enough to try elbow grease. After all the approaches mentioned , what is

first logical thing to try? Baking soda, soft scrub, specific quartz cleaner , rust remover ...I’m confused ! Help !

Pics?

I have Caesar stone quartz and I really like it. It is called Organic White. I am not easy on a kitchen and I have been really impressed with it so far. I let red wine sit on it overnight and it took a second to get it off, but eventually it did come out. I even got permanent black marker on it (yes, I said I’m hard on a kitchen) and that came off, too. I used Bar Keeper’s friend. The toughest stain it had was due to an turmeric aioli that spilled and sat during a dinner. That was a little more challenging to get off... I ended up using toothpaste. It did take away some of the sheen, but- meh... it’ll be a reminder of the nice dinner we had with friends. I have granite installed in my preschool’s kitchen. Granite is probably more forgiving... or maybe I just don’t see the marks since it’s not white.

I like my Caesar Stone, actually I love it. But- like me, it’s flawed.

I had a terrible experience with Ceaserstone counter and with the costumer service. I tried washing my counters with all the “recommended” cleaning products and my counter continues to look unfresh and dirty, with swirls of water. To fix the issue the company sends out a man with Windex, paper towels and chemicals in a metal container you would never use in the kitchen! Than they proceed to clean the counter in about 3 steps and rub it down until it looks okay with paper towels - it takes 20 minutes at a minimum. They make you feel bad in the process because how could I have dirty counters. All the work lasts exactly 1 second until something is placed on a counter, at which point you can’t spot clean but have to clean all of it! Dark colors are blamed as hard to clean, except I have a dark natural counter in my bathroom and it never looks nasty like my kitchen Ceaserstone countertop. Unbelievably terrible product and only lies from costumer service.

DO NOT BUY caesarstone if you do not want to end up with unremovable stains. They say it is nonporous ,this is fraudulent advertising. The company specifically told me that it is damaged. How can a nonporous stone get damaged????? NEVER AGAIN!

by any chance, was your Caesarstone honed?

Corian doesn't stain.

InI do not know what honed means so I do not know. But if it is, is there any cure to my problem?

Yes I know that corian doesn’ stain or get damaged from the inside but I am stuck with the Caesar stone and do not have the money to replace it. caesarstone is a lousy company to deal with

I believe my stone is polished. Told by the company it is damaged. Any chemical or professional help that you might’ve able to suggest is welcome. Somebody told me to use Clorox powder and others say comet. So far I did not try those products from fear it will cause more damage. Are there professionals and who are they who can deal with Caesarstone?

Try different poultices please. Google them.

Thanks, I will try

Can you post a pic of this stain? I always find this so odd....I have quartz counters and I swear nothing, NOTHING, stains them.

I sent a picture of the stain. Hope you can see it

chess, did you see the stain/

I'm wondering if you could try an extra tiny test of Oxyclean liquid stain remover, maybe just at one back edge of the stained area. It has hydrogen peroxide in it and works wonders on every clothing stain we've ever had around here, like grass, blood, mustard, etc. Maybe just a tiny drop left there for 30 minutes to an hour. You may have nothing to lose.

I am going to buy it and try. Like you said, I’ve got nothing to lose.

Mina Shachmurove Yes - at the back left of the sink. Is there a shiny finish where that area is? It almost look like something has taken the finish off somehow. Was it scrubbed with an abrasive?

No. But I have a plastic box with a dishwashing detergent sitting in it. Though considering the fact that caesarstone company claims it is imprevious that should not happen. This is the worst of stains I have, but I think there is a milder case of it behind the sink. This stone get damaged and the company (in Israel and here) cannot explain it even though they are fully aware of it but would not take responsibility. They started their lifetime warranty in the year 2008. I purchased mine in 2006. Something changed during those 2 years to make them change the warranty policy. The sucked into it , I do not know what. But impervious it is not.

there is white finish and the stain is under it. Was advised to use oil for 3 days. I assume to suck it out . Did not work. Trying again.

Sorry, I've only run into stained CS when product was honed. Good Luck.

do you think that a police of baking soda and water with saran wrap on top left for 24 hours is a good or bad idea?

I was in touch with Caesarstone in Israel (where originally the stonewall made). They referred me to a representative in the USA. I was told the the stone is damaged from hard water deposits and nothing can be done about it. So, the stone in my house is NOT non porous like they claim it is. Beware, do not buy it. At the time I bought the stone they gave 10 years warranty. Now they give lifetime warranty. They advertisement for their product is fraudulent. I have corian in my house, not a single stain. Never caesarstone for me again. Be careful if you decide to go for them. Calling the better business bureau to se if I can get any help.

What I've learned after dealing with stains on my quartz countertops, the company u purchase from is the key point, at least here, I found out that the company I purchased from isnt selling what they advise!!!! Research everyone before u buy...I'm stuck with it..

Yes. I understand and agree. I am also stuck with what I got. But I wanted people to know to stay away from carsarstone. Do not buy. Their customer survive is horrible and they do not stand behind what they promise. It is porous. I even checked how much it would cost to replace it and got numbers like $3500! Obviously not an option!

"I have corian in my house, not a single stain."

Perhaps this is why Corian just celebrated its 50th birthday. We'll see if the glued gravel makes it that long.

I fully agree! I have corian in my bathrooms. 3 of them. Like you said water can sit on it you wipe it and it is gone. I have expressed that to the caesarstone company. They commit fraud by selling it as a non porous countertop. It is not true. I am all over the internet letting people know not to buy their product.

Water is very corrosive ( have you seen a mountain range lately?), and should not be left sitting on manmade surfaces in our houses. The photos posted above are a testament to that. The only thing I know of to remove those stains is a dilute acid e.g., hydrochloric as in ZEP toilet bowl cleaner. Which will obviously remove any polished gloss on the tops.

I would rather live with the stain than ruin the polish. I am just being very careful with water right now. Though the thing is that caesarstone advertise their stone as nonporous which is a fraudulent advertisement. So I will do anything in my power to inform people about this product. And like you said, and I also informed the company that their ignoring me is going to hurt them in the long run.

The last comment on Ceasarstone in this string is four years old. I am contemplating Ceasarstone (Raw Concrete/grey) and see many positive reviews, but wondering if anyone here or new has input. Perhaps the prouct has improved in the last four years?

It hasn't.

Just stay far away from it? Concrete, raw concrete any of them. Please?

When someone figures out the obsession with these colors, please let me know?! : (

Jan, is your comment about the grey colors specific to the Ceasarstone line because it has staining issues, or just about the aethetic of using grey colors?

I had concrete colour caesarstone in my rental unit and it was awesome! No stains nothing!

@Janet

Ceasarstone was a notorious gray issue. With so many colors in the universe, so many tops ? WHY the gray, after at least 15 years of abundant gray in every iteration from walls to counter to fabric to floor etc.

Go outside the gray box.: )

I also have Pietra Grey Caesarstone countertops. For the past seven years, I've tried almost every non-bleach cleaning product to remove oil and water mark stains and the dingy patina that was building up, making the countertop appear scratched and blotchy. Nothing worked until.... this morning I found Caesarstone's cleaning guide online. They recommend Soft Scrub Gel with Bleach. I was extremely hesitiate to use a product with bleach but I followed Caesarstone's cleaning instructions and the countertops now look BRAND NEW!! Truly a miracle!

https://www.caesarstoneus.com/wp-content/uploads/2021/01/cs_careguide_residential_aug-2020_compressed.pdf

Thanks for sharing!!!!