The Xi is our newest and most advanced wall. Provided with more than double the insulation, the Xi has 2.5 inches of continuous DOW ® Styrofoam for superior warmth and energy efficiency.

Nearly everything is insulated in the Xi, including corners, studs, and bond beams. Special engineering makes the wall thermally isolated and insulated from the exterior elements. The new wall is monolithically poured (poured all at once) with high-strength concrete for solid structural integrity, and reinforced with steel rebar and polypropylene fibers.

The Xi wall's special highstrength, low-water concrete mix also requires no additional damp proofing, benefitting from technology developed for the original R-5. And the Xi meets or exceeds energy conservation requirements from both the IECC and the IRC. The Xi has a striking modern look before drywall installation, due to the galvanized steel stud facings that have replaced treated wood nailers. The high-tech engineering and numerous advanced features of the Xi make it the foundation of the future, and the only choice for discriminating homeowners.