FOX BLOCKS SERIES

Our core product line – this series of ICF products is the basis for a successful build. Used in just about any configuration you can imagine.

Product Highlights

Unlimited Design Detailing and Finishes

With blocks available in a number of shapes, sizes, and concrete core thicknesses, we can create any design you can dream up. Plus, our wall assembly works with all exterior/interior finishes you choose to use, be it EIFS, traditional stucco, brick, stone, fiber cement siding or drywall.

Unparalleled Comfort and Quiet

Our wall assembly provides indoor comfort and improves a building’s performance characteristics for the interior environment by eliminating moisture intrusion, managing the airflow and allowing for accurate climate control and minimizing sound mitigation.

Strength Against the Elements

Our ICF wall assembly meets and exceeds safety/resilience/durability requirements for Division 03 Concrete, Section 031119 ICF; Whole Building Design Guide (WBDG) Unified Facilities Criteria (UFC) & FEMA-ATFP Federal Military and DoD Standards FEMA-ATFP.

Lifetime of Savings

The performance characteristics of our wall assembly can reduce a building’s heating and cooling cost dramatically (up to 50%) and puts Net Zero Energy goals within reach.


Straight Block

The Straight Block typically makes up between 80-85% of the ICF wall assembly on most residential and commercial jobs. This block has six strong, full-length injection, molded plastic ties made from Polypropylene (PP) regrind resin that are well marked with the words “Fox Blocks” located on both sides of the block. These ties secure the two pieces of modified Expanded Polystyrene (EPS) foam together that make up each block type. The blocks are stacked tightly together and inter-locked end to end to the desired wall length. Once a single layer or course of ICF blocks is installed, horizontal reinforcing steel bars are inter-locked securely together in the ties of the blocks, then another course of Straight Blocks are placed firmly on top as the wall is built. To improve construction wall strength during installation, each course of blocks should have their end-joint connections staggered in a running bond method from the course adjacent to it. This installation method is typical for all Fox Blocks ICF form types and sizes. Fox Blocks has proven results for setting exceptional standards in cost control, planning, scheduling and project safety. We have experience that gives us a competitive advantage over others in our field.

Fox-Blocks-straight-4-IMG_9877
Core Width Form Width Length Return Surface Area Concrete Vol
Core Width 4" Form Width 9.25" Length 48" Return 0" Surface Area 5.33 sq. ft. Concrete Vol 0.066 cu. yd.
Core Width 6" Form Width 11.25" Length 48" Return 0" Surface Area 5.33 sq. ft. Concrete Vol 0.099 cu. yd.
Core Width 8" Form Width 13.25" Length 48" Return 0" Surface Area 5.33 sq. ft. Concrete Vol 0.132 cu. yd.
Core Width 10" Form Width 15.25" Length 48" Return 0" Surface Area 5.33 sq. ft. Concrete Vol 0.165 cu. yd.
Core Width 12" Form Width 17.25" Length 48" Return 0" Surface Area 5.33 sq. ft. Concrete Vol 0.198 cu. yd.

Corner Block

The 90 Degree Corner Block typically makes up 15-20% of the ICF wall assembly on most residential and commercial jobs. This block has six strong, full-length, injection molded plastic ties made from Polypropylene (PP) regrind resin that are well marked with the words “Fox Blocks” located on both sides of the block. The corner block also has one patent pending corner bracket designed like no other in the ICF Industry. This 7/32″ thick x 1-1/2″ wide corner bracket was engineered to add more strength/support to the block because it connects the inner/outer modified Expanded Polystyrene (EPS) foam panels together and is designed to eliminate blow-outs during the concrete pour.

Fox blocks extended corner block
Core Width Form Width Length Return Surface Area Concrete Vol.
Core Width 4" Form Width 9.25" Length 38" Return 22" Surface Area 6.67 sq. ft. Concrete Vol. 0.07 cu. yd.
Core Width 6" Form Width 11.25" Length 40" Return 24" Surface Area 7.11 sq. ft. Concrete Vol. 0.105 cu. yd.
Core Width 8" Form Width 13.25" Length 42" Return 26" Surface Area 7.56 sq. ft. Concrete Vol. 0.145 cu. yd.
Core Width 10" Form Width 15.25" Length 42" Return 26" Surface Area 7.56 sq. ft. Concrete Vol. 0.181 cu. yd.
Core Width 12" Form Width 17.25" Length 46" Return 30" Surface Area 8.42 sq. ft. Concrete Vol. 0.212 cu. yd.

T Block

The T-Block (Short Leg) typically makes up 1-2% of the ICF wall assembly on most residential and commercial jobs. This block has eight strong, full-length, injection molded plastic ties made from Polypropylene (PP) regrind resin that are well marked with the words “Fox Blocks” located on all sides of the block. These ties secure the three pieces of modified Expanded Polystyrene (EPS) foam together that make up each block type. The blocks are stacked tightly together and inter-locked end to end to the adjacent Straight Blocks. T-Blocks are typically used in walls where two walls intersect each other, an exterior wall to an interior wall. The T-Block is engineered/designed to minimize the amount of form bracing and eliminate blow-outs during the placement of the concrete.

Fox Blocks T Block
Core Width Form Width Length Return Surface Area Concrete Vol
Core Width 6" Form Width 11.25" Length 44" Return 4.375" Surface Area 4.89 sq. ft. Concrete Vol 0.105 cu. yd.
Core Width 6" Form Width 11.25" Length 44" Return 12.375" Surface Area 4.89 sq. ft. Concrete Vol 0.121 cu. yd.
Core Width 8" Form Width 13.25" Length 44" Return 4.75" Surface Area 4.89 sq. ft. Concrete Vol 0.141 cu. yd.
Core Width 8" Form Width 13.25" Length 44" Return 12.375" Surface Area 4.89 sq. ft. Concrete Vol 0.152 cu. yd.

Transition T Block

Fox blocks trans t 7

45 Degree Angle Block

The 45 Degree Angle Block typically makes up less than 5% of the ICF wall assembly on most residential and commercial jobs. This block has five strong, full-length, injection molded plastic ties made from Polypropylene (PP) regrind resin that are well marked with the words “Fox Blocks” located on both sides of the block. The 7/32″ thick x 1-1/2″ wide corner bracket was engineered to add more strength/support to the block by reinforcing the corner once the wall is built to eliminate blow-outs during the concrete pour. The bracket has a marketed exterior fastening surface that is very large on both sides of the block to secure exterior veneer finishes. The ties secure the two pieces of modified Expanded Polystyrene (EPS) foam together that make up each block type. The blocks are stacked tightly together at the corner locations and inter-locked end to end to the Straight Blocks to the desired wall length. Once a single layer or course of ICF blocks is installed, horizontal reinforcing steel bars are inter-locked securely together in the ties of the blocks, then another course of blocks are placed firmly on top as the wall is built. To improve construction wall strength during installation, each course of blocks should have their end-joint connections staggered in a running bond method from the course adjacent to it.

Fox blocks 45 3 img 0110
Core Width Form Width Length Return Surface Area Concrete Vol
Core Width 4" Form Width 9.25" Length 34" Return 18" Surface Area 5.78 sq. ft. Concrete Vol 0.066 cu. yd.
Core Width 6" Form Width 11.25" Length 26" Return 18" Surface Area 4.89 sq. ft. Concrete Vol 0.082 cu. yd.
Core Width 8" Form Width 13.25" Length 28" Return 20" Surface Area 5.33 sq. ft. Concrete Vol 0.117 cu. yd.

Radius Block

The Radius Block is a specialty block used to build curved walls. These pre-molded blocks are 16″ long, allowing the designer the opportunity to build a curved wall section in any length needed. Available current radiuses are 5′, 6′, 7′, 8′, 9′, and 10′ only with a 6″ concrete core width. Ordering these radius blocks is a special order.

Fox Blocks radius 2 IMG 0274
Core Width Form Width Length Return Surface Area Concrete Vol
Core Width 6" Form Width 11.25" Length 16" Return 0" Surface Area 1.77 sq. ft. Concrete Vol 0.032 cu. yd.

Taper Top Block

The Taper-Top Block typically makes up 1-2% of the ICF wall assembly on most residential and commercial jobs. This block has six strong, full-length, injection molded plastic ties made from Polypropylene (PP) regrind resin that are well marked with the words “Fox Blocks” located on both sides of the block. These ties secure the two pieces of modified Expanded Polystyrene (EPS) foam together that make up each block type. The blocks are stacked tightly together and inter-locked end to end to the desired wall length. Taper-Top Blocks are typically used at the top of the wall where the width of the concrete core needs to be increased to support other adjacent lateral loads (i.e., exterior roof truss loads, interior floor joist loads, hollowcore, etc.). Once a single layer or course of Taper-Top Blocks is installed, horizontal reinforcing steel bars are inter-locked securely together in the ties of the blocks.

Fox Blocks Taper Top 4 IMG 0281
Core Width Form Width Length Return Surface Area Concrete Vol
Core Width 6" Form Width 11.25" Length 48" Return 0" Surface Area 5.33 sq. ft. Concrete Vol 0.111 cu. yd.
Core Width 8" Form Width 13.25" Length 48" Return 0" Surface Area 5.33 sq. ft. Concrete Vol 0.144 cu. yd.

Curb Block

There has always been a need for a block that can create a ledge to support floor systems within the wall without limiting course heights. The Fox Blocks team has solved this by adding an extra attachment point within the tie. This patent pending solution allows you to form a curb with the block to support whatever you need to support. Curb block uses: hollowcore, precast, dimensional wood floors, engineered wood floors, truss floors, brick, garage slabs, creating recesses, hambro floors, and pan deck.

Fox Blocks Curb Blocks 2 IMG 0117 1

Brick-Ledge Block

The Corbel Ledge Block typically makes up 1-2% of the ICF wall assembly on most residential and commercial jobs. This block has six strong, full-length, injection molded plastic ties made from Polypropylene (PP) regrind resin that are well marked with the words “Fox Blocks” located on both sides of the block. These ties secure the two pieces of modified Expanded Polystyrene (EPS) foam together that makes up each block type. The blocks are stacked tightly together and inter-locked end to end to the desired wall length. Corbel Ledge Blocks are typically used at the top of the wall to support other adjacent lateral loads (i.e., masonry veneer loads, floor joist loads, etc.). Once a single layer or course of Corbel Ledge Blocks is installed, horizontal reinforcing steel bars are inter-locked securely together in the ties of the blocks, in the main core and the extended ledge core. The Fox Blocks xLerator reinforcement is designed to be placed in the top of the of Corbel Ledge Block to provide engineered reinforcement for the corbel.After the concrete is poured/cured, the Corbel Ledge Block can support a 25′ tall masonry wall.

Fox blocks brickledge 2 img 0291
Core Width Form Width Length Return Surface Area Concrete Vol
Core Width 6" Form Width 15.75" Length 48" Return 9" Surface Area 5.61 sq. ft. Concrete Vol 0.129 cu. yd.
Core Width 8" Form Width 17.75" Length 48" Return 0" Surface Area 5.61 sq. ft. Concrete Vol 0.162 cu. yd.

Half Straight Block

Fox Blocks half straight 6 IMG 0105

Half Corner Block

Fox Blocks corner half 6 IMG 0128

Learn What to Ask About ICF Installation

Want to know more about installing ICF but aren't sure where to start? Our Guide, 13 Questions You Should Ask About ICF Installations, will give you answers to the most important questions about ICF installation, including what types of buildings you can use ICF in, how tall the building can be and more.

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