Attractive metal siding & energy efficient upgrades.
This three story tower had rotten 3/4 plywood serving as siding and sheathing.
The rotten wood and inefficient windows were replaced, & the structure was then covered in 3/4 foam board, Tyvek house wrap and metal siding.
A design flaw in the roof structure was corrected to prevent future damage.
The end result is a much more energy efficient structure.