The Bautex Block is a composite insu­lat­ing concrete form (ICF) that makes design simpler, con­struc­tion faster, and buildings perform better. The blocks are large elements that are light­weight and easy to install by a single person. The blocks serve as forms for building a steel-rein­forced concrete wall where the blocks stay in place after the concrete is installed to provide enclosure and insu­la­tion for the building.

Bautex Block has been fully tested and is rec­og­nized by inter­na­tion­al building codes. Today, the blocks are man­u­fac­tured in a fully automated and high pro­duc­tion facility in Central Texas utilizing an inno­v­a­tive patented process. 



The basic material tech­nol­o­gy used in the Bautex Block is over 60 years old, and has been used exten­sive­ly in Europe and Asia. The concept was to create a light­weight concrete mixture that would be durable and highly insu­lat­ing. The Bautex composite material is simply regular concrete (Portland cement, sand, rock, and water) where the sand and rock have been replaced by expanded poly­styrene (EPS).

The benefits of the composite material are clear. EPS is light­weight and highly insu­lat­ing. Portland cement is durable and fire resistant. The Bautex EPS-Cement composite material is light­weight, insu­lat­ing, fire-resistant, sound reducing, and immune to mold, mildew and decay. 

The result is a durable and light­weight block that make con­struc­tion fast and simple while providing tremen­dous per­for­mance benefits to our built infrastructure.


Portland Cement
Strong, stable, durable and resistant to fire, water and decay.
Expanded Polystyrene
Lightweight, insulating, resistant to mold growth, and sound reducing.


Density 22 lbs/ft³ Lightweight material that makes construction simpler
Compressive Strength <100 lbs/in² Material is not load-bearing but durable for concrete pouring
R-Value R-1.84/in yield an R-14 c.i. system Insulation greater than energy codes
Fire Flame Spread: 0 and Smoke Develop: 20 Class-leading fire resistance. 4-hour fire rating.
Mold & Mildew ASTM G21: 0 No mold or mildew growth
Sound STC: 51 and OITC: 49 High sound reduction


Insulating Concrete Forming

The Bautex Block Wall System has been evaluated for use as interior or exterior, rein­forced, load-bearing or non-load-bearing walls. Bautex meets the require­ments of the 2018, 2015, 2012, and 2009 Inter­na­tion­al Building Code (IBC) and the 2018, 2015, 2012, and 2009 Inter­na­tion­al Res­i­den­tial Code (IRC).

IAPMO® UESTM Eval­u­a­tion Report Number 559 has been issued for the Bautex Block Wall System.

ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials Flame Spread: <25 Smoke Development: <450 Flame Spread: 0 Smoke Development: 20
ASTM E119 - Standard Test Methods for Fire Tests of Building Construction and Materials (Unfinished Bautex Wall under load). Conforms to UL 263, NFPA 251, and CAN/ULC S101. Declared Value Fire resistance rating of 4 hours, load bearing
NFPA 286 - Standard Methods of Fire Tests for Evaluating Contribution Of Wall And Ceiling Interior Finish To Room Fire Growth (Unfinished Bautex Wall) Pass Meets NFPA 101 Life Safety Code®
NFPA 286 - Standard Methods of Fire Tests for Evaluating Contribution Of Wall And Ceiling Interior Finish To Room Fire Growth (Finished with 5/8” gypsum drywall) Pass Meets NFPA 101 Life Safety Code®
ASTM C518 - Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus Declared Value R-value per inch: 1.84 R-value system: 14 c.i. (thermal mass wall)
ASTM G21 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi Score: 0 to 4 Score: 0, No Growth Detected on Surface of Sample
ASTM E90 - Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements (Finished Bautex Wall) Declared Value STC: 51 OITC: 47
ICC 500 - ICC/NSSA Standard for the Design and Construction of Storm Shelters Protocol 1 & 2 Hurricane Unfinished: 200 mph Finished: 225 mph
FEMA 320 - Taking Shelter from the Storm: Building a Safe Room for Your Home or Small Business Protocol 3 Hurricane Protocol 4 Tornado Unfinished: 160 mph Finished: 250 mph
FEMA 361 - Design and Construction Guidance for Community Safe Rooms Protocol 3 Hurricane Protocol 4 Tornado Unfinished: 160 mph Finished: 250 mph