Commonly known as ICF’s (Insulated concrete forms), these have recently become a very popular choice for basement and even home wall construction across the country and in the U.P. They are made of two parallel pieces of high-density polystyrene connected by plastic ties forming blocks with interlocking edges so that they can be stacked like legos. Concrete is then poured in the middle cavity producing a very strong, air-tight, and well-insulated wall. Dry wall screws can be driven into the plastic tie ends for attaching gypsum board or other items to the wall. A Fox Block wall form has an equivalent R-value of 23. A complete wall with concrete and a Fox Block form can have an effective R-value range of 30 to 50. Click here to visit Fox Blocks website.




  • Ready to stack. No onsite assembly required; start installing right off the truck.

  • Reversible. Straight and corner forms are fully reversible; no top or bottom, left or right.

  • Standard Size. Industry-standard 16” high forms produce less waste cutting doors & windows.

  • Interlocking. Fox Block’s large interlock has many benefits including minimized movement during concrete placement.

  • 2 5/8” Foam Panels. Allow easy accommodation of electrical and plumbing installations.

  • Extended Corners. Reversible corners are 16” longer than other ICF’s, which eliminates one full straight block for every three corners used.

  • Reversible T Block. Two ties at the intersection of the “T” give maximum strength and attachment.

  • Rebar Support. Rebar notches are designed to lap rebar on top of each other to ensure proper concrete placement.

  • Fox Buck. A window and door buck to create solid concrete barriers against drafts and moisture penetration.

  • Energy Stick. A graphite coated polystyrene panel that is inserted between the plastic ties and to the outside face of the wall, ensuring an R-9 boost to the R-value.




  • Save significant money on your energy bills

  • Unmatched structural strength

  • Outside winds do not affect inside comfort

  • Healthier living without dusts and pollens

  • Asthmatics, allergy sufferers, children and seniors rest easy

  • Outside noises stay outside

  • Warm, consistent inside temperatures

  • Your family and home are protected

  • Ultimate design flexibility

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