Find technical and installation manuals, code approvals, product specifications, BIM tools and more!

Code Approvals

Find IRC & IBC as well as  regional and local code approvals for BuildBlock ICF products.

Installation Manuals

Download BuildBlock product install manuals and guides for installation instructions.


BuildBlock provides a variety of engineering information for the United States & Canada.

Product Specifications

This section provides commercial product specifications for BuildBlock Products. 

Design Tools

BuildBlock design tools, BIM, and CAD details are available for multiple software design platforms. 

Concrete Design Mix

Ensuring proper concrete design mix is crucial for completing a successful ICF pour. 

Product Testing

Find information relating to the rigorous product testing of BuildBlock Insulating Concrete Forms. 

Technical Resources

Find technical and research articles, prescriptive engineering and whitepapers. 

See ICFs in action & learn more about building with icfs!

Product Technical Information

BuildBlock Technical Data
Expanded Polystyrene Density
1.5 lbs/cu. ft.
Average Thickness of EPS
2.5"/panel (5" total)
Steady State R-Value
R-21 Foam Value
Effective R-value: (concrete, form, air infiltration, and thermal mass)
R-24 to R-50
Actual R-Value
4.4 Per Inch of EPS
Thermal Mass (Form & Concrete)
6″ core: 72 lbs/sq. ft. | 8″ core: 96 lbs/sq. ft.
.24 Per inch of EPS
Water Absorption
Less than 3% (ASTM C272)
Water Vapor
0.56 perms per 2.5″
Sound Class
STC Sound Class rating of 54 with 1/2-inch sheetrock both sides | STC Sound Class rating of 51 with 1/2-inch sheet rock one side
Fire Wall
Firewall rating 5,000 to 12,000 lbs per lineal foot for 3 hours.
Concrete Compressive Strength
3000 psi
Concrete Pouring Temperature Range:
Down to 0°F (-18°C)

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