Remnants of the original factory were maintained in the initial plan as well, namely the surrounding walls made of Chicago common brick, a blond brick with hints of pink that Valerio calls a “rather noble material.” In order to tie the addition to the original building, the firm sourced a new crop of this material for the vertical extension, so the it would look as though it was always part of the plan.  Remarkable Brick Homes by Luke Hopping from A Two-Story Addition Turned a Bachelor Pad Into a Comfortable Home For Two