Your granite countertops are not as tough as you think.
I’ve read on another un-named post in a far off website that granite is the hardest substance second to diamonds. Well this is not true, as a matter of fact diamonds are not really the hardest things known to man.
The first hardest substance known to man is, wurtzite boron nitride has a similar structure to diamond, but is made up of different atoms. The second, the mineral lonsdaleite, or hexagonal diamond is made from carbon atoms just like diamond, but they are arranged in a different shape.
But not soon after that discovery in 2009 a new discovery was published in the January 2013 issue of the journal Nature. Researchers had found a way to compress boron nitride particles to form “ultrahard nanotwinned cubic boron nitride.” They simply re-organised the particles like a onion, or a flaky rose, or those little Russian dolls that fit inside one another, as the team explained to Wired.
So until we can make ultrahard nanotwinned cubic boron nitride into countertops we are going to need to support granite countertops with good old steel granite brackets. So how hard is your granite countertop? Well it’s not really how hard it is that matters, its how porece the granite countertop is. One must remember to never consider all granite the same.
Just for an example, granite countertops made from slabs of “Rainforest Green Granite” are extremely flaky and porous compared to a granite countertop made from “Angola Black Granite”. We have seen a Rainforest Brown Granite Countertop snap and the striking thing is (Pun intended)… is that it almost appeared to explode when it shattered. The interesting thing is, we now see many companies selling support for granite countertops selling brackets without taking into consideration that all granite is not created the same and some granite countertops need more support than others.
Our friends at the Granite Bracket Authority are working on a density chart for different types of granite and we will keep posted and post as soon as they have that up.
But for now it’s general wisdom to suggest a granite bracket for supporting granite countertops along the overhang every 16 inches. But consider the story of Unlucky Luey. Luey had just purchased a 32 inch granite countertop and thought he would be tricky and save some time and money. Luey put one granite countertop bracket right in the center, 16 inches from each side right? Well they don’t call him Unlucky Luey for nothing. The smart thing to do was to get three brackets and evenly space them out for safety and proper support for his granite countertop.