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Welcome to the Installation of ICFs and Benefits blog by NUDURA Insulated Concrete Forms. Here you will learn more about ICF installations and benefits. Be sure to check back regularly!

Getting Started with ICF Construction – Installation Step-By-Step

by NUDURA Blogger | Jul 11, 2016

Questions about how to install an ICF system are quite common, even among experienced builders and contractors who may be interested in exploring the technology for the first time. Here is a basic look at the first few steps involved in construction, starting out from a basement or slab on grade condition:

BlockInstallStart at the corners: The installer will begin by chalking out an outline of where the building will stand, and then set the corner form ICF units in place.

Meet outside dimensions: The standard forms will be cut to achieve the appropriate wall length, and then laid in from corner to corner. Typically there won’t be any openings in a slab on grade condition – those will begin to form after the second course.

Bring in the reinforcements: Horizontal steel will be positionedDSC_8695 within the form units in the cavity in preparation for reinforcing the wall.

Level it off: Once the second course is laid up, laser levels can ensure perfectly square, plumb and level walls.

duralokStack: Place the units on top of each other. While some units are friction fit, NUDURA forms use a vertical integrated interlock that holds the units solidly together along the horizontal line of the form. ICF units can be male/female (think Lego blocks) or completely reversible, with the interlocks molded into the top and bottom of forms.

Prepare for windows and doors: As construction continues, installers will want to use a buck material to help create a rough opening where windows and doors will be set and anchored. Made of wood or steel, bucks enable the concrete to be held back and formed in the opening, and can be utilized and interfaced with any ICF system.

To learn how to complete the process, stay tuned for our next blog post. We’ll illustrate the process of inserting more reinforcing steel and pouring the concrete, whether it’s just for the foundation or where ICF results are best: building to the roof.


Leave a comment
  1. john gomez | Oct 23, 2018
    I am interested in building with nudura product

    This is excellent! Please feel free to fill out our online contact form and one of our sales reps will be in touch with you! You can also find local distributors in your area for more information on NUDURA ICFs; distributors can provide an estimate on building costs in your area.

    NUDURA Blogger |
    October 24, 2018
  2. oritim | Jun 29, 2018
    Do you know if ICF can stand on a foundation without piers ?  The soil test recommends that a pier be used however they didn't take into account an ICF building.  I would think an ICF building could work on a slab on grade foundation with wafflebox and forego the piers.

    Footings and grade beams need to be designed to applicable building code requirements, for designs that go outside of the building code a structural engineer must be consulted to ensure a safe design and construction. A structural engineer will be able to review the soil test and advise a proper way to construct the foundation.

    - NUDURA Blogger July 9, 2018
  3. Jim Perry | May 06, 2018
    Do footings need rebar sticking up out of concrete to hold icf if so how high and distance apart?

    Footing design should be as per local building codes, but yes, walls do need to be laterally supported with dowels from the footing. Please refer to detail C-1 in the NUDURA installation manual for required spacing and dimensions of dowels in our Technical Centre on our website.

    - NUDURA Blogger May 7, 2018
  4. Colin | Feb 15, 2018
    For the first course of ICF blocks, do the interlocking foam sections needs to be removed, from the base of the block, so the form fits flush on the slab with no gaps or is there a specific block for the bottom course?

    No, the interlocking foam does not need to be removed on the bottom course.

    - NUDURA Blogger February 16, 2018
  5. Lloyd Zeiset | Jan 30, 2018
    30 years ago I built a house with I C F and now wish to build my own retirement home in the Pittsburg, Pa. area we have our lot and are ready to get started ...please provide any distributer contact ....concrete work is my contractor business in Pa. USA thanks, Lloyd

    Lloyd, we are excited to hear you want to build with ICFs again! our Sales Rep, Tony, can point you in the right direction to get you started!

    - NUDURA Blogger | January 31, 2018
  6. vlad | Jul 24, 2016
    hi where can i buy Nudura concrete forms?

    You can find local distributors in your area for more information on NUDURA ICFs; distributors can provide an estimate on building costs in your area.
    NUDURA Blogger | August 03, 2016

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