Fox Block · Insulated Concrete Forms

ICF construction, made for mountain winters.

Fox Blocks are hollow foam forms that stack like blocks, get reinforced with rebar, and fill with concrete — leaving you a wall that is structure, insulation, and sound barrier in a single pour.

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Why ICF at 6,500+ feet

Warm in January, cool in June. Continuous foam on both faces of a concrete core delivers roughly R-23+ walls with no thermal bridging — heating bills drop noticeably at elevation.
Strength you can feel. A steel-reinforced concrete wall shrugs off wind, hail, and the freeze-thaw cycles that crack framed construction.
Quiet. ICF walls cut outside noise dramatically — highway, wind, and neighbors fade out.
Fire resistance. Concrete walls carry fire ratings framed walls cannot match — worth real money in forest country.
Fewer trades, faster dry-in. Form, pour, and insulate in one step.

Fox Block ICF basement walls — FIG. 01 — ICF BASEMENT WALLS, SLAB POURED

Fox Block ICF walls and slab — FIG. 02 — ICF WALLS & FLATWORK

Where we use it

Full ICF homes

Foundation to roofline — the most efficient homes we build.

ICF foundations & basements

A warm, dry basement under a conventionally framed home.

Safe rooms & shelters

The same reinforced walls make ideal storm shelters.

ICF construction, made for mountain winters.

Why ICF at 6,500+ feet

Where we use it

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