Do ICFs require a special concrete mix design?
The con­crete is nor­mal strength, min­i­mum 2500 psi (20 MPa) per build­ing codes. The mix design spec­i­fies a small­er aggre­gate and high­er slump than con­crete typ­i­cal­ly used for floors. Most Ready-Mix sup­pli­ers are famil­iar with an ICF con­crete mix design.
Waterproofing Below Grade Insulated Concrete Forms
Waterproofing Below-Grade Insulated Concrete Forms
How do I determine which size ICF to use?

ICFs pro­vide a rein­forced con­crete wall which is designed to spe­cif­ic engi­neer­ing prin­ci­ples. Typ­i­cal res­i­den­tial con­struc­tion, per the applic­a­bil­i­ty lim­its in the build­ing code, allows walls 10′ (3 m) high or less between lat­er­al sup­ports (floor and roof con­nec­tions). Below grade walls must have a min­i­mum 6″ (150 mm) con­crete core. In some regions, an 8″ (200 mm) con­crete core is the min­i­mum allowed thick­ness for below grade walls.

The 4″ (100 mm) form can­not be used below grade as a foun­da­tion wall. The 4″ (100 mm) form may be used for above grade walls up to a max­i­mum of 10′ (3.0 m).

The 6″ (150 mm) form, above grade, is lim­it­ed to approx­i­mate­ly 14′ (4.2 m) in height. Walls high­er than 14′ (4.2 m) must use an 8″ (200 mm) or larg­er form.

Typ­i­cal res­i­den­tial con­struc­tion will use 6″ or 8″ con­crete core size blocks. Project spe­cif­ic engi­neer­ing may allow for some core thick­ness to span ver­ti­cal­ly high­er than these pro­posed guide­lines.

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3 Problems with Steel Frame Construction and Why ICF is a Better Alternative
There are three prob­lems with steel frame con­struc­tion that affect the safe­ty, effi­cien­cy, and dura­bil­i­ty of the struc­tures they cre­ate.
Fox Blocks Seasoned ICF Pro gives an ICF quality testimonial on Industrial Strength Fox Blocks

Fox Blocks Seasoned ICF Pro gives an ICF quality testimonial on Industrial Strength Fox Blocks

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Fox Blocks Wins Big at the 2020 ICF Builder Awards
Can you vibrate or consolidate the concrete in ICFs?
Yes, con­sol­i­da­tion of the con­crete is one of the key ele­ments in the place­ment of con­crete in an ICF wall. Fox Blocks rec­om­mends inter­nal vibra­tion with a pen­cil vibra­tor, quick­ly in and slow­ly out.
IC Fs Make Home Ownership Attainable for Young Adults and Seniors
ICFs Make Home Ownership Attainable for Young Adults and Seniors
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Is ICF Construction Worth the Cost for Commercial Buildings?
ICF con­struc­tion for com­mer­cial build­ings has sky­rock­et­ed over the past few years. ICF ben­e­fits rang­ing from sound insu­la­tion to dura­bil­i­ty to build­ing strength and dis­as­ter resis­tance have piqued a lot of inter­est for builders and archi­tects. But it has some scratch­ing their heads, mis­tak­en­ly think­ing ICF is more expen­sive and then won­der­ing, Is ICF con­struc­tion cost worth it?”
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How ICF Solves the Problems of Both Metal and Wood Stud Framing