Holiday Builders, Inc

Fox Blocks – Insulated Concrete Forms

Insulated Concrete Forms (ICFs) are a newer building product.  With them your home is stronger, safer and more energy efficient.


  • Your family is safe and secure with a steel reinforced concrete that protects you from hurricanes, tornadoes, and everything else nature can throw at you better than any other type of construction.  In laboratory test simulating a hurricane ICFs can withstand 150 mph wind and debris traveling at over 100 mph. 
  • Your home stays warmer in winter and cooler in summer.  Homeowners report savings of up to 70% on energy bills.  Virtually eliminates the “cold spots” that often occur in frame walls.  It has a high R-value, low air infiltration, and high thermal mass which gives you a more constant temperature. 
  • Your home is quieter because ICFs reduce sound transmissions by 75% - 85%.
  • No CFCs, HCFCs or formaldehyde is used in the production of our products and that means cleaner healthier air. 
  • Our ICFs are built with reinforced concrete core sandwiched between two layers of expanded polystyrene foam insulation.
  • Your walls offer the best fire-resistance available.  The insulating foam, which covers both sides of the concrete core, is treated with a fire retardant giving it a rated 2 and 4 hour fire resistance.
  • Protects you from mold and mildew because it is inert. 
  • ICFs come in a wide selection so you can easily build any shape, curve or angle.  You can finish it with any material: brick, stone, stucco or wood siding and know that it is attached to the web and therefore to the concrete itself making it very solid.  The same is true on the inside for attaching drywall or other finishing products. 


6" Wood6" Steel Stud8" CMU studFox ICF 6 1/4" FormFox ICF 8" Form

Effective Equivalent R-Value

Sound Transmission Class (STC)3739505050
Fire Rating45 min1hr2hr3hr4hr