Granite oil absorption photos

[Mikey P]

Feel free to use on your sites as a great example as to why you want to seal your counters.

Hand oils caused the darkening of the corner

 

[Kellie Hiler]

Wow...that's heavy duty buildup there.
I'm going to try to get Shilo and I to the stone classes, I really want to learn how to redo countertops and such.

 

[GeneMiller]

never had a desire to do it myself. i do like to learn new stuff even if just for my own granite.

 

[Mikey P]

Wow...that's heavy duty buildup there.
I'm going to try to get Shilo and I to the stone classes, I really want to learn how to redo countertops and such.

Not actually build up, absorbtion..

 

[Kellie Hiler]

How do you get it out? Will a polisher and pastes be sufficient?

 

[Mikey P]

Jackhammer in this instance as the oils have gone all the way through


A poultice in less severe cases

 

[Cameron DeMille]

This granite is notorious for this. Other than the porosity, it's a good quality stone, but even sealed really well, this stuff is a pain

 

[Kellie Hiler]

Quartz is about the only stone counter that doesn't require being sealed right?

 

[Mrice]

I see this all the time...even in new construction. This is where custy kept lazy susan for years. All they can do is TRY to darken the spot with oil. Poulticing a whole calendar is usually cost prohibitive without guaranteed results.

 

[Cameron DeMille]

I see this all the time...even in new construction. This is where custy kept lazy susan for years. All they can do is TRY to darken the spot with oil. Poulticing a whole calendar is usually cost prohibitive without guaranteed results.

I really doubt that's staining, it looks like oxidation of some sort. The chances of the all the edging and front of the stone staining the same is slim to none. Some stones can darken over time when exposed to UV light, and you'll end up with a light spot wherever something has sat for a long time.

Kellie, you would think Quartz (engineered stone made with crushed quartz and resin) and quartzite (natural slabs) would not need to be sealed, but that's not the case. True quartzite is not porous, but most slabs sold as such are hard enough to pass as quartzite, but not actually quartzite. Many of them are dolomitic marbles, which is an incredibly hard marble, but can still etch. Super White is one, which wil also stain quite easily. Engineered Quartz, like Caserstone, etc. "don't need to be sealed" but in fact can be stained.

 

[Cameron DeMille]

I see this all the time...even in new construction. This is where custy kept lazy susan for years. All they can do is TRY to darken the spot with oil. Poulticing a whole calendar is usually cost prohibitive without guaranteed results.

I bet if you left this completely uncovered it would all even out after a year or so. There are several stones we fabricate that darken in the sunlight. one of them is dark green and gets nearly white when we cut and grind it. We let it sit in the sun for 2-3 weeks before delivering the tops because it needs time for the edges to darken and match the top.

 

[Mrice]

Thanks for the heads up. I do see it all the time though...now I'll know better what it is. Any particular stone more susceptible to it than others?

 

[Charlie Lyman]

This one took a couple of doses of poultice. Not perfect, but customer was satisfied.

 

[Kellie Hiler]

I really doubt that's staining, it looks like oxidation of some sort. The chances of the all the edging and front of the stone staining the same is slim to none. Some stones can darken over time when exposed to UV light, and you'll end up with a light spot wherever something has sat for a long time.

Kellie, you would think Quartz (engineered stone made with crushed quartz and resin) and quartzite (natural slabs) would not need to be sealed, but that's not the case. True quartzite is not porous, but most slabs sold as such are hard enough to pass as quartzite, but not actually quartzite. Many of them are dolomitic marbles, which is an incredibly hard marble, but can still etch. Super White is one, which wil also stain quite easily. Engineered Quartz, like Caserstone, etc. "don't need to be sealed" but in fact can be stained.

Wow....good info, thank you!

 

[Kellie Hiler]

What is this poultice you are using?

 

[Cameron DeMille]

What is this poultice you are using?

there are multiple options on the market and you can make your own, tweaking the mix for different types of stains. We have one for oil and grease stains. For tannins, like coffee, wine, etc. you would want to use hydrogen peroxide.

Here is the one we have: http://www.easystonecare.com/Ready-To-Use-Oil-Stain-Remover-For-Granite-p/stain.htm

 

[Kellie Hiler]

Interesting...thank you.

 

[GeneMiller]

All this talk makes me want to clean and seal my granite. I don't even know the type.