Footings and rebar
The engineered footing is poured with vertical rebar dowels left standing exactly where the wall core will land. Every piece of steel above ground ties back into the foundation below it.
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Insulated Concrete Form building
ICF construction, explained by the people who pour it.
Steel-reinforced concrete between two permanent layers of insulating foam. It is the strongest, quietest, most efficient wall we know how to build — and in tornado alley, it is the one that makes sense.
What it actually is
A concrete wall that arrives wearing its own insulation.
ICF construction, short for Insulated Concrete Form construction, is a building method in which hollow foam blocks are stacked into the shape of a home’s walls, reinforced with steel rebar, and filled with poured concrete. The foam stays in place permanently as insulation on both sides of the concrete core.
Think of the finished wall as a sandwich: a couple of inches of rigid foam on the outside, six inches of steel-reinforced structural concrete in the middle, and another couple of inches of foam on the inside. Drywall screws to embedded plastic webs on the interior face. Stone, stucco, brick or siding attaches to the exterior.
One assembly does the job of five separate ones. It is the structure, the insulation, the air barrier, the sound barrier and the storm protection at the same time — which is exactly why the cost comparison against stick framing is much closer than people expect. The approach is backed by 35+ years of building experience.
Visten Construction Group is a member of the World Insulated Concrete Form Association (WICFA), the industry body for insulated concrete form construction.
The wall, layer by layer
- 01Exterior finishStone, brick, stucco or fiber cement, fastened to embedded webs
- 02Insulating foamContinuous expanded polystyrene — no thermal bridging
- 03Concrete core6" of poured structural concrete with steel rebar
- 04Insulating foamA second continuous layer on the interior face
- 05Interior finishDrywall screwed directly to the embedded furring webs
On the jobsite
How we build an ICF wall, start to finish
Six stages, roughly eight weeks on a typical North Texas or southern Oklahoma custom home, and one very memorable day in the middle.
Stacking the forms
Hollow expanded-polystyrene blocks interlock like heavy Lego, stacked into the exact shape of the house — window bucks, door openings, corners and gable ends all formed in foam.
Setting the steel
Horizontal and vertical rebar is tied inside the cavity to the structural engineer’s schedule. This is the skeleton that makes the wall a reinforced concrete structure rather than a heavy one.
Bracing and alignment
An alignment system braces every wall dead plumb and straight, with scaffold planks for the pour crew. Concrete finds every weakness in bracing, so this step is not rushed.
The pour
A boom pump places concrete in controlled lifts around the building, consolidated as it goes so there are no voids. It is one long, coordinated, very good day.
Cure, strip braces, build on
The concrete cures inside its permanent foam jacket. Bracing comes off, roof framing anchors into connections cast into the wall, and the rest of the house proceeds normally.
The payoff
What you actually get for building this way
Every one of these is a reason a family in North Texas or southern Oklahoma has picked ICF with us. Most of them pick it for the first, then fall in love with the second and third.
Storm and wind resistance
Tested against sustained winds in excess of 200 mph and the debris impacts that breach stick-framed walls. Continuous concrete from footing to roofline means an unbroken load path.
Energy performance
Continuous insulation on both faces, thermal mass in the middle, and very low air leakage. Typical result: 30% to 50% less heating and cooling energy than a comparable framed home.
Sound isolation
Highway noise, storms, barking dogs and equipment simply do not get through six inches of reinforced concrete. Clients describe it as the house being switched to mute.
Fire resistance
Concrete wall assemblies carry multi-hour fire resistance ratings. In a region with real grass-fire seasons, that is not a theoretical benefit.
No rot, termites or mold
There is no cellulose in the wall to feed insects or fungus, and no cavity that traps moisture against wood. The assembly does not degrade with age.
Generational lifespan
Reinforced concrete walls are not a maintenance item. Built correctly, the structure outlives the roof, the mechanicals, the finishes, and probably the mortgage-holder.
Side by side
ICF vs traditional stick framing
An honest comparison, including the line where stick framing wins.
| Factor | ICF construction | Traditional framing |
|---|---|---|
| Storm resistance | Rated for sustained winds over 200 mph with debris impact resistance; continuous load path to footing | Typically designed to code minimum wind loads; sheathing and roof connections are the failure points |
| Energy efficiency | Continuous insulation + thermal mass + very low air leakage; 30–50% lower heating and cooling energy | Cavity insulation interrupted by studs (thermal bridging); air sealing depends on detailing quality |
| Sound insulation | Dramatic reduction in exterior noise; clients routinely describe the interior as silent | Noticeable transmission of traffic, wind, storms and neighborhood noise |
| Lifespan of the wall | Reinforced concrete structure; not a maintenance or replacement item | Dependent on keeping water out of the assembly for the life of the building |
| Insurance implications | Often qualifies for reduced premiums for concrete construction, fire resistance and impact-rated openings | Standard rating; no assembly-based discount |
| Upfront cost | Roughly 3–8% higher total build cost (about $12,000–$30,000 on a 2,500 sq ft home) | Lowest first cost of the two systems |
| Long-term cost | Lower utility bills, lower maintenance, smaller HVAC equipment, potential insurance savings | Higher operating cost and ongoing envelope maintenance over the life of the home |
Two systems together
ICF Walls + Red Iron Steel: How the Two Work Together
Insulated concrete forms and red iron structural steel solve different problems, and they are often combined for that reason. The concrete walls handle the building envelope — insulation, mass, and resistance to wind. The steel handles the structure that spans across open space. Used together, each system does the job it is best suited for.
What the ICF Walls Contribute
- Continuous insulationRigid foam runs on both faces of the concrete core, so the insulation layer is uninterrupted rather than broken up by wall studs. This reduces thermal bridging — the path heat takes through framing members in a conventionally framed wall.
- Thermal massThe concrete core absorbs and releases heat slowly, which moderates how quickly indoor temperatures swing as outdoor temperatures rise and fall through the day.
- Storm and wind resistanceReinforced concrete walls are substantially heavier and stiffer than wood framing, and are used in high-wind regions for that reason.
- Air tightnessFewer seams and penetrations in the wall assembly generally mean less uncontrolled air leakage.
- SoundMass and continuous insulation together reduce outside noise transmission through exterior walls.
What the Red Iron Steel Contributes
- Long clear spansSteel beams carry loads across wider distances than dimensional lumber, which allows open interior areas without intermediate load-bearing walls or posts.
- Large window and door openingsSteel headers and beams can carry the loads above wide openings, making expansive glass walls and oversized door openings structurally practical.
- Load pathsSteel columns and beams collect roof and floor loads and carry them down to the foundation on a defined path, rather than distributing them through many framing members.
- Dimensional stabilitySteel does not shrink, warp, or twist with changes in moisture content the way wood framing can.
- Design flexibilityBecause the steel frame carries structural loads, interior partition walls can be positioned for how the space is used rather than where the structure requires them.
The result is a hybrid approach: an insulated, high-mass concrete envelope wrapped around a steel frame that opens up the interior. It is a heavier and more deliberate way to build than conventional stick framing, and it is chosen when durability, energy performance, and open architectural spans all matter on the same project.
Prior work — before Visten
“My project is an ICF build with a steel-framed roof designed for large spans with no interior columns or posts. It is 8,600 sf under the roof and 6,200 sf living area. Duane was instrumental to the design of the building and is an expert in ICF. He has a practical and experience-based knowledge of building in general that was/is invaluable for the integration of ICF with roof, openings, electric, plumbing, etc. Duane has been on-site at many critical junctures, and his knowledge and support have been priceless.”
This review is from a client of Duane Holloway’s work prior to founding Visten Construction Group in April 2026.
Prior work — before Visten
“Great communication, a very customer-centered experience. Duane takes his time and doesn't push an agenda. Helped me build a great house.”
This review is from a client of Duane Holloway’s work prior to founding Visten Construction Group in April 2026.
Honest talk about cost
Yes, it costs more. Here is exactly how much.
An ICF home in North Texas and southern Oklahoma typically costs about 3% to 8% more than a comparable stick-built home, which on a 2,500 square foot Wichita Falls build usually works out to roughly $12,000 to $30,000 in additional cost, concentrated almost entirely in the wall assembly.
The premium shrinks once you account for what you stop buying: exterior framing lumber and sheathing, house wrap, cavity insulation, a separate air-sealing scope, and a meaningful chunk of HVAC equipment capacity, because the load calculation comes down when the envelope gets this good.
On the payback side, our clients typically see 30% to 50% lower heating and cooling costs. On a 2,500 square foot home, that is roughly $150 a month against a comparable framed home — which retires a $20,000 wall premium in about eleven years on energy alone, before insurance savings and before the fact that the wall never needs replacing.
And we will tell you when it is not the right call. If the choice is ICF walls or finishing the house properly, finish the house.
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Good candidates for ICF
- You plan to live in the house long term
- Storm safety is a real, personal priority
- You are building on open, exposed rural land
- Your summer utility bills already hurt
- You want a quiet house near a highway or the base
ICF questions
What people ask us about concrete homes
What is ICF construction?
ICF construction, short for Insulated Concrete Form construction, is a building method in which hollow foam blocks are stacked into the shape of a home’s walls, reinforced with steel rebar, and filled with poured concrete. The foam stays in place permanently as insulation on both sides of the concrete core. Visten Construction Group builds ICF custom homes throughout North Texas and southern Oklahoma because the result is a wall that is simultaneously structural, insulated, air-sealed, fire resistant and storm resistant.
Can ICF homes withstand tornadoes?
ICF homes are among the most tornado-resistant residential structures you can build, and properly engineered ICF walls are tested to withstand sustained winds in excess of 200 mph and debris impacts that destroy conventional stick-framed walls. In tornado-alley North Texas and southern Oklahoma, Visten Construction Group builds continuous ICF walls from footing to roofline with anchored roof connections, so the home has an unbroken load path rather than a bolted-on safe room.
How much does an ICF home cost compared to a traditional stick-built home in North Texas?
An ICF home in North Texas or southern Oklahoma typically costs about 3% to 8% more than a comparable stick-built home at the time of construction, which on a 2,500 square foot Wichita Falls build usually works out to roughly $12,000 to $30,000 in additional shell cost. Industry testing and manufacturer data put the ongoing savings at 30% to 50% of heating and cooling energy, alongside potential insurance savings and a wall assembly that will not need to be replaced in your lifetime.
Do ICF homes cost more to build?
Yes, ICF homes cost modestly more to build up front than stick-framed homes, because the wall assembly includes concrete, steel and foam instead of lumber alone. The honest number in the Wichita Falls market is a 3% to 8% premium on total build cost, and Visten Construction Group shows clients exactly where that money goes line by line under its cost-plus model rather than burying it in a lump-sum bid.
How energy efficient is an ICF home?
ICF homes typically use 30% to 50% less energy for heating and cooling than a comparable stick-framed home, because the continuous concrete-and-foam wall delivers high effective R-value, thermal mass and very low air leakage all at once. Energy efficiency has been the focus of Duane Holloway’s building work for decades, and in a climate that runs above 100 degrees for weeks at a stretch, the wall assembly is the single biggest lever on a utility bill.
Does an ICF home qualify for lower insurance premiums?
Many North Texas and Oklahoma insurers offer reduced premiums for homes with reinforced concrete wall systems, fire-resistant construction and impact-rated openings, all of which an ICF home from Visten Construction Group provides. Discounts vary by carrier, so Visten supplies clients with wall assembly documentation and engineering details they can hand directly to their agent.
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Start your build
Want to stand inside one?
The fastest way to understand ICF is to walk into a finished one and listen to how quiet it is. If you are anywhere near Wichita Falls, we will arrange it.
We respond within one business day.