No its going on sheetrock, the bricks are in photoshop, and we distressed the art. The post below the full mural shows a closeup of the girl and the brick pattern behind her. We got a sample printed and obviously we made sure each brick when printed at 100% was to scale and correct size. Looks pretty damn realistic. We do so much in retro genre, we just thought it would be pretty cool.
Actually, for you Call of Duty fans, we had our entire office and building made into a Call of Duty map, exact to scale - and the mural is in the game, as is all our desks, conference room, art on the walls, etc. Its pretty sick. So I've been 'virtually' seeing the mural for a few weeks, just been waiting on the install.