Concrete Homes in Northeast Dallas – NBC 5 Dallas-Fort Worth

The cleanup is in full force after 10 tornadoes were confirmed in northern Texas last week.

They spun like wrecking balls for everything on their way.

City officials estimate the storms caused more than $ 277 million in damage.

Several shops and houses are being demolished, so people will struggle to figure out what’s next.

A north Texas building contractor says houses he builds can withstand the wind of an EF-5 tornado.

From the street you would never know that any of his homes in northeast Dallas are any different from a traditional timber frame home.

However, the walls are made of concrete sandwiched between two layers of foam.

“It’s a huge Yeti cooler that is disguised as a house,” said builder Alan Hoffmann, owner of Hoffmann Homes.

The foam forms a cavity that is filled with concrete six inches thick.

Hoffmann says that makes it energy efficient and tornado-resistant.

“It stops a 2×4 at 100 mph, it only breaks a 2×4 if it hits a wall,” he said.

Years ago, researchers at Texas Tech University put the design to the test.

They shot a 2×4 from a cannon. It flies straight through a typical wall and breaks when it hits a concrete slab.

In theory, every room in the houses is safe, but some even have pantries that double as safe rooms as they have no windows or doors that can be penetrated. The pantry door is made of steel, said Hoffmann.

Hoffmann says concrete houses are two to six percent more expensive than conventional timber frame houses. He says the siding is fireproof too.

It takes about two weeks longer to build, and the technology cannot be retrofitted to existing houses.

Hoffmann creates a new development that consists entirely of concrete houses. He said land will go up for sale in January.

He says more school districts are also using the material for building. For example, a gym in Carrollton was built out of 15.5 inches thick concrete that can withstand winds of 250 mph.

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