Building ICF

Insulating concrete forms (ICFs) are expanded polystyrene panels that are stacked into the shape of the exterior walls of a building. Steel rebar is installed as the panels are stacked. Concrete is then poured inside, creating a foam-concrete sandwich. The result is a house or commercial building that is exceptionally strong, energy efficient, quiet, comfortable, and durable, that can be built in any style.

IntegraSpec® is an Insulated Concrete Form (ICF) consisting of 2 panels of expanded polystyrene (EPS) married with high impact polystyrene inserts used to hold patented webs/ spacers designed to secure rebar as needed. Once stacked together, these forms represent a mold ready for concrete placement, similar to a traditionally poured concrete wall; however, ICF forms never leave the concrete.

1. Structural Support: (Concrete & Steel)
2. Super Insulation: (2 1/2” EPS panels on each side with 6”, 8”, or more concrete between them)
3. Studs/Furring: (1 5/8” Studs at 8″ on center)
4. Air/Vapor Barrier: (Low permeate EPS in continuous contact with concrete)
5. Finishing Substrate: (Single material EPS Type II)


Systems we use include:
• ICF walls
• Spray foam insulation (both open and closed cell) in walls, roofs, and floors
• Unvented roof systems
• Unvented crawlspaces
• Under-slab insulation
• Geothermal heating/cooling
• Ultra high efficiency windows
• Some high performance products we prefer to use include:
• Integraspec ICFs
• Alpen Windows

Building ICF Wall Internal structure cut-away

High performance products that we endorse include:

building ICF - Alpen Clear Performance
building icf - integraspec - the user friendly ICF - Insulating Concrete Forms

Does building ICF structures take longer?

Expect ICF to add 1-2 weeks to the schedule on an average size new home.
On Commercial projects ICF can actually reduce overall build time.