(KYTX) - Concrete is being poured into the walls of this home using ICF.
"This is a small portion of it, they come in 8 foot lengths," said Todd Weaver, Customer Concrete Homes.
These insulated concrete forms, as they're called, are hollow core blocks that stack and interlock like legos.
This shell of an elementary school in Mansfield is being built using the construction material.
Todd Weaver with Custom Concrete Homes stands behind the durability and strength of the material.
"Structurally, I don't know of anything out there that is stronger," said Weaver.
Strength is what you need, when you have debris, coming toward your home in strong tornadic winds.
"I've seen these 2x4s go through two or three walls in a house," said Larry Tanner.
Larry Tanner helps run Texas Tech's national wind institute, the premier testing ground for tornado shelters.
Well-built safe rooms can withstand flying 2x4s and larger debris, which is often heavier but slower. Those shelters don't have to be buried in the backyard.
"You can completely have a safe building above ground," added Weaver.
Weaver showed us pictures of concrete safe rooms that can be built to match your house.
"That way it would look like it was a part of your house, but it's really a standalone unit right next to the house," said Weaver.
These safe rooms can handle the impact of a piece of debris flying at 115 miles per hour.
If you build a new home, you can make it into your closet or bathroom. Something you can use everyday, which minimizes the cost.