I saw this on one of the series, does anyone have experience with this type of construction and maybe some tips? Thinking of doing this for a new shop for both fire rating and it would beat a steel building in my area do to the heat.

Didn't see the series, but was the product BlockBond? Came out in the '70s, sprayed on once the blocks are stacked, can be tinted or textured. The demoed it by creating a wall and driving a CAT D-19 on to it.