So,e granites do no require sealing. Sealing these granites could damage them. Post this question on the Kitchen forum and someone will provide the link to the list of granites that should not be sealed. Good luck!

Sealing is a very confusing topic-the sealer companies and human nature makes it that way. The question of sealing if it hasn't been addressed by your stone pro get informed about what you are buying and what role sealing will play. Simply stated every stone will have its own characteristics regarding porosity and mineral composition. There are several simple tests that you can do so that you are informed. A water test will tell you just how porous or not your stone is. A lemon test will tell you about porosity and also acid sensitivity. The glass test will tell you if you are dealing with a true quartzite or not. Taking a sample home to work with and test is key. When dealing with the confusing nature of stone or any natural product you must be an "educated consumer" . You can be mislead by the most sincerest experts that have been misinformed regarding stone. Regarding sealers most main stream sealers are fine to use-Its all about the application. How many applications will you need for a porous stone? How often should I be sealing or not? Why am I sealing a stone that exhibits no porosity when tested? All the answers can be found online or on the forum. Getting back to the original questions-sealing every year is overkill. A sealer should last anywhere from 3 years and on. You must use neutral ph cleaners that wont degrade the sealer. Doing this will extend the life of the sealer. As far as the Macubus do the porosity test and see what you get. Your leathered antique brown isn't very porous but the fabricator may use a color enhancing sealer on the surface to bring out the depth of color. This product on that stone will sit on the surface and will have to be maintained over the course of its life.

You should seal NVG once a year. I'd recommend to use a water-based impregnating (penetrating) sealer. The ones where you apply with a cloth are better than the spray-ons. The fabricator should seal the stone upon installation.

These are my pics of my countertops placed Friday June 22, 2018. I cried looking at these seams. It looks so cheap. Fabricator explains that's the way it comes. I explained that I shouldn't be able to see the seams so clearly. It looks so unprofessional. They ended up taking them back to their warehouse. In hopes they say if it is quality control will try and fix it just to make it look better. Otherwise I will have to pay an additional fee for them to come out again to install. I just don't know what to do and if still looks the same. This is the first time I've replaced my counters in 24 years. I don't and can't live with it. looking at this for another 24 years. It looks so cheap and it really was not it's a lot of money to me. I hope fingers crossed that they will fix this problem. They never told me that there would be such seams. I thought the edges were done by a machine and it would be all one piece. I have read up on this and now understand there are seams. But now I do know that they should not look like this. If they are good fabricator you shouldn't be able to see them so clearly. I will find out next week what happens.