Insulated Concrete Form (ICF) Construction Insulated Concrete Forms (ICFs) are hollow foam blocks which are interlocked and stacked to form the shape of the exterior walls of a building or home, reinforced with steel rebar and then filled with concrete.

ICFs combine one of the finest insulating materials, expanded polystyrene (EPS), with one of the strongest structural building materials, steel reinforced concrete. The result is a wall system of unmatched comfort, energy efficiency, strength and noise reduction.

ICF Construction greatly reduces energy costs and is ideal for residential, commercial and remodeling applications. Our company provides professional installation expertise in this specialized field.

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"Cornerstone, Building a Concrete Future",
Cover Story Article in The Builder's Journal

Cornerstone truly believes that ICF is one of your best options when it comes to the structure of your home, business or addition. What are some of the benefits of building with ICF?
  • Energy Efficient Superior Sound Proofing
  • Safety and Security
  • Built in Vapor & Air Barriers
  • 8x Stronger Than Wood Framing
  • High Indoor Air Quality


“Cornerstone is dedicated to helping people build homes that are safe, energy efficient, and environmentally friendly.  They are an asset to the building community and a leader in innovative solutions.”  Fred Corrigan, Aggregate and Ready Mix Association of Minnesota
“Cornerstone Custom Construction is without a question truly committed to high quality ICF and building technology.”  Ted Capistrant, The Profit Builder’s Network
“ICF is at the forefront of the newest high quality and environmentally-sound building technologies, and Cornerstone offer builders and homeowners’ integrity and expertise in this field.”  Dave Sheridan, Sheridan Performance Group
“Cornerstone is the local expert on ICF and delivers a quality product on a timely basis at a price which is competitive with block.”  Kurt Erickson, Quality Home Transformations, Inc.