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Introduction to Insulating Concrete Forms

This detailed introduction to Insulating Concrete Forms (ICFs) covers their structure, insulation performance, and finishing options. With R-values between 18 and 22, ICF walls offer 100% insulation, creating a monolithic structure that enhances strength and thermal performance. The form tie system, reinforced concrete core, and integral furring support various finishes, while ICFs provide exceptional acoustical performance, disaster resistance, and low maintenance. Emphasizing their use in residential and commercial constructions, this guide highlights their historical development and advantages in building design.

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Introduction to Insulating Concrete Forms

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  1. Introduction to InsulatingConcreteForms

  2. Joseph LymanExecutive Director,ICFA

  3. Wall Functions Structure Insulation Finish Attachment Chase for utilities

  4. Typical ICF Wall 100% insulation (R- 18 to 22) 100% monolithic structure Integral furring Fully insulated chase cavity

  5. Components Face Shell 2 to 2.5” thick R- 18 to R-22 EPS or XPS Withstands internal pressure of concrete during placement

  6. Components Form Tie Plastic or metal 6” to 12” o.c. Rebar saddles

  7. Components Form Tie Face Tie face for attachment of finishes can be exposed or recessed

  8. Components Reinforced Concrete Core 4”, 6” or 8” thick 10”+ in 2” increments Monolithic, 2,500 to 4,000 psi 6”slump 3/8” aggregate Rebar = 40 or 60 ksi

  9. Quiet Comfort ICFs Have High STC Ratings 6” ICF wall = 57 Collaborative for High-Performance Schools study shows as noise is reduced inside classrooms, test scores increase

  10. End Result Exterior shell with: Superior strength Thermal performance High R-value Thermal mass Virtually no thru wall infiltration Acoustical attenuation Disaster resistance Low Maintenance

  11. ICF History • EPS was created by the German chemical company BASF in 1940s. • Werner Gregori created the foam ICF concept in the mid 1960’s as a foundation material, and submitted patents in 1966. • Currently, 70% of the ICF market is residential and 30% is commercial

  12. Schools

  13. Safety

  14. Thank you

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