‘The horizontal line is the line of domesticity.’

– Frank Lloyd Wright

Horizontal lines are everywhere in this home. They guide your eye, contain your thoughts, and quiet your mind.

They are found in the trim, the eaves, the flower box, the banding, the shelves, between windows and in the overhangs. Layers of horizontal lines stack like cherished books on a nightstand, one upon the next.

After a year of living here, we stumbled upon more horizontal lines in a subtle, but historically significant place: the masonry of our small fireplace.

We learned, while touring the Gordon house in Oregon (a Usonian house designed in the late 50’s and built after Frank’s death), that Frank often insisted that grout in the vertical seams of a brick wall be smoothed to the brick surface, while grout in the horizontal seams be inset, creating an effect of horizontal stripes, as opposed to stacked cubes. It’s a common feature of Usonian homes, which are between 20-40 years younger than this home.

Often, Usonian brickwork is of large-form cinder block and is painted, like this wall of the Gordon House. (Here, he went so far as to extend seams between layers of brick into the trim between wood siding; calling your eyes to trace an unbroken horizontal line until they land, gently, on the nearby trees and shrubs.)

The same treatment is found in the Elizabeth Murphy House too, but it is so subtle that it is easily missed. First, the bricks are small and there are only a few of them. Then, the idea is executed in two different ways:

1. Within the narrow columns beside the fire-box, vertical seams are grout-filled to de-emphasize the vertical, while…
   
2. … in the wall of brick above the firebox, the bring is tightly spaced, leaving no room for grout. The brick-to-brick seams are smooth on their own and the horizontal pops.
   

We wonder: were these two approaches combined experimentally? Or was “smooth” specified by the architect and then executed in different ways by the construction team?

Either way, we’re looking at Frank’s fingerprints in the grout. He seems to be toying with an idea that would move in and out of his work for another 50 years.