Quartz Countertop Stain
Quartz Countertop Stain Removal Tips
Tea stains my HanStone quartz countertop.
The manufacturer told me to let a soap/water solution soak and then clean it.
I didn't think a quartz countertop stain was possible since it is supposed to be non-porous.
Is there a sealer I should use for quartz?
Some of the stains are not coming out. I bought quartz to avoid this very problem. What can I do? Joseph, (Dublin, Ireland)
I'll be honest with you... removing a quartz countertop stain can often be difficult. Quartz stains can be permanent in some cases, but I'll give you the best tips.
First, makers of quartz countertops like to tout their product as "non-porous," but they all hedge and claim the surface is stain-resistant
and not stain-proof.
Straight from the HanStone website: HanStone™ is a non-porous material that is highly resistant to stains, scratches and heat. However, it is not stain, scratch, or heat proof.
How Does a Quartz Countertop Stain?
The term "non-porous" would seem to indicate that it cannot be stained. After all, how can quartz be stained if nothing can absorb.... right?
The concept is a little misleading, but it's not false.
In truth, nothing will absorb (or at least extremely difficult), but that doesn't mean that quartz cannot be stained if by "stain" we mean any abnormal or discolored spot.
The end result is basically the same.... a stain, a spot, whatever it looks crummy. It's just the mechanism that is different.
- A traditional stain occurs when some substance absorbs into a material.
- Quartz countertop stains usually occur due to chemical reaction with the resin. The chemical, food or drink discolors the resin. Nothing absorbs.
If you are setting tea cup on the countertop and spills are staining or rings are left behind, then the tea is likely affecting the resin used to bind the quartz together.
From the photo we can see that the ring is tea-colored as well. This is usually what happens when a substance absorbs and stains the
So, possibly, it is just the tiniest bit porous or the tea is reacting and binding to the surface in some way that regular cleaning doesn't remove it. Typically, a quartz stain is lighter in color when due to resin damage.
Just FYI.... white quartz countertops are the most prone to stains, discolorations, what have you.
HanStone warns not to use any solvent on their quartz countertop. This may damage the resin and color pigments. Solvents are used all the time to clean granite and marble.
Most quartz manufacturers don't warn against all
solvents, though. Mainly, just the more potent ones. Acetone is, generally, okay. But best to test it on an hidden area first.
Cleaning a Quartz Countertop Stain
Here's some good advice on choosing a regular, everyday cleaner for your quartz countertops....To avoid damage
it's best to use cleaning products made for granite & quartz countertops
. Some common cleaners can permanently discolor quartz.
Since quartz countertops are 93% quartz (a mineral in granite) it is safest to use products made for cleaning granite and natural stone on your quartz surfaces as well.
With a marble or granite stain I'd suggest using a poultice with hydrogen peroxide or a solvent like acetone. In your case, I don't have too much confidence that it would have any effect.
A poultice is used to remove stains on a porous
surface and it is possible that the acetone could discolor the quartz. Not worth the risk. Bar Keeper's Friend
has proven successful at removing many quartz countertop stains. Use it by scrubbing with a non-abrasive, nylon pad (not
the green or red scrubbies).
It doesn't work in every case, since sometimes the discoloration is permanent. But, it won't cause any further damage.
Sealing Quartz Countertops
Sealing won't help in this case. Quartz is non-porous or only very slightly so and does not need sealing. A sealer must absorb to work, so it wouldn't have any effect on a quartz countertop and should not be applied.