One, 5/8...is that the standard thickness of sheet rock? Two, there does not appear to be any materials that one would expect to find between the walls...like insulation. Three, the distance between a set sheet rock. My house is built with 2x6 studs...most are built with 2x4 studs but the picture does not clearly show how far a part each set of two truely are...it does not appear to be at least 4 inches. Four, each "wall" set are only inches apart...I would think the walls whould be set further apart...may at least 5 to 10 feet. The extra space alows for more deceleration between walls.