Built to Blast - Page 4

Friendly fallout of the Cold War, Blomberg’s ‘bomb-resistant’ concrete homes represent a colorful chapter of mid-century modern Sacramento
Jerry Blomberg at the Tradewinds house today.
Tradewind home's architect, George Muraki, early 1960s.

Family patriarch and Jerry's father, Gus Blomberg (left), socializes with architect Carter Sparks (right background) and wife Billy Dare Sparks, circa 1970.

Gustaf had an interest in architecture, and even met Los Angeles modernist Richard Neutra, Jerry says.

It wasn’t just open plans and big windows that made the Blomberg homes modern. It was the concrete blocks themselves.
Concrete, though used by the Romans for aqueducts, was very much a new material in the 1940s—at least for housing. Frank Lloyd Wright, as in so many things, had pioneered the way with his 1920s textile-block houses in Los Angeles.

Berkeley architect and engineer Walter Steilberg, a close associate of architect Julia Morgan, was another concrete block pioneer from the 1930s on, designing concrete homes and inventing his own construction system, dubbed Fabricrete.
Gus and Steilberg met in the 1930s when Steilberg worked with Basalt Rock Co. on a proposal for workers housing and public housing built of concrete.

During World War II, the Bay Area-based modernist architect Joseph Allen Stein proposed using concrete blocks as the easiest, cheapest way to produce high-quality worker housing. After the war, he designed matching concrete homes for himself and his friend, landscape architect Robert Royston, in Mill Valley.

It was after the war that concrete blocks seemed ready to boom as a housing material. “Build a better concrete block,” Architectural Forum advised in September 1949, “and there will be contractors at your doorstep.”


By the early 1950s, Eichler’s architects, Jones & Emmons, were designing tracts of modern concrete block homes for the Pardee-Phillips company in Southern California and Las Vegas. Other modern designers were using concrete blocks for custom designs.

“Behold the Lowly Concrete Block,” House & Home headlined in March 1956. “It isn’t lowly anymore.”

“It wasn’t so long ago,” the magazine wrote, “that a concrete block would not dare to show its face in polite society.” Soon, “concrete block should become one of the most popular materials in U.S. home building.”

The material appealed to Gus Blomberg, a former real estate man who was working as a sales rep for Cowell Lime and Cement, a major firm with operations throughout the Bay Area. He had no technical education and no college, Ralph says, but was a creative and inquisitive guy—and wondered why concrete blocks had to be so heavy.

“His vision was of lightweight concrete blocks that could be handled by an individual,” Ralph says.

“He did research in the family home, and baked the product in the family stove. It did interrupt a few family meals.”

In 1933, his block attracted the Basalt Rock Co., which agreed to produce it as Basalite. Gus was soon living with his family in a house—of concrete block, of course—on the Basalt Rock property along the Napa River, not far from downtown Napa. He helped the company build several Basalite houses along the nearby Silverado Trail.

After losing most of his sight in an accident, Gus returned to real estate, moving the family to Sacramento in 1939 when a pair of developers thought Basalite homes would attract buyers to their subdivision there, Ralph says. World War II halted the project.

The family spent the war years running a truck farm once operated by Japanese families who had been interned.

After the war, the Blomberg company, later renamed Building Materials, became a family firm, selling Basalite blocks in the Sacramento Valley for the Basalt Rock Co.

The firm, with 15 to 20 employees, was headed by Gus and involved all six of his sons. Gus’s wife, Alice, worked closely with her husband as well. Three sons soon peeled away for other pursuits, leaving Harold, Ralph, and Jerry to work with their father.
Gus, Alice, Ralph, Harold, and Jerry, and their families, all lived within blocks of each other in concrete homes.