Can you build and pour concrete in cold weather?
Yes. The forms insu­late the con­crete and enhance the cur­ing process. The top of the forms, or exposed con­crete areas will need to be cov­ered, tem­porar­i­ly, with insu­la­tion to pre­vent the exposed con­crete from freez­ing. Fox Blocks projects can be con­struct­ed any time of the year, no delays for cold weath­er.
What size and how much steel reinforcement is required in an ICF?

Fox Blocks walls are designed as rein­forced con­crete walls, with steel rein­force­ment bars spec­i­fied to be installed ver­ti­cal­ly and hor­i­zon­tal­ly, as the walls are built. Typ­i­cal rein­force­ment bar sizes used are #4 or #5 (10 m or 15 m).

The Fox Buck - Take the Wood out of Windows and Doors
Fox Blocks’ Glen Klassen gives an overview of the Fox Buck ICF win­dow and door buck.
How Strong is the Fox Blocks 90° Corner?
We built a test wall 440 feet long x 9′-4″ tall with 24 turns, with no brac­ing or strap­ping, to test the 90 degree blocks with con­crete.
The Fox Blocks Line-Up at a Glance
With advice from lead­ing con­trac­tors in the Insu­lat­ed Con­crete Form busi­ness, Fox Blocks has cre­at­ed an incred­i­ble group of blocks.
How to Layout Scaffold on Fox Blocks' Insulated Concrete Form Walls
When you’re build­ing with insu­lat­ed con­crete forms, chances are you’re going to need to set up scaf­fold­ing.
Using Fox Blocks' Online Estimator for Your Next ICF Project
We know esti­mat­ing for an ICF project can be daunt­ing if you don’t know where to start, so we’ve cre­at­ed this help­ful video tuto­r­i­al.
Interview with ICF Specialties ICF Contractor Don Coleman on Using Fox Blocks
ICF Con­trac­tor Don Cole­man with ICF Spe­cial­ties gives the low­down on work­ing with Fox Blocks’ insu­lat­ed con­crete forms.
The Fox Block Interlock
When the Fox Blocks inter­lock was designed our Engi­neer­ing staff made the choice not to focus on being with­in 1÷2” to 1” from the build­ing dimen­sion but to give the strongest inter­lock pos­si­ble.
New Training for the Fox Block Interlock
We have found it to be a waste of time and ener­gy to attempt to off­set or stag­ger the block as in the pho­to to the left. By cre­at­ing a ver­ti­cal stacked seam you will be more accu­rate with the job dimen­sions and will increase your prof­it by gain­ing effi­cien­cy.