Greenblock's Fire Resistance Evaluation Exceeds Expectations

Greenblock has achieved a 4-hour fire resistance rating on its 6-inch core ICF.

Stuart, FL, May 21, 2008 --( Greenblock’s Fire Resistance Evaluation Exceeds Company and Industry Expectations.

Greenblock 6-inch ICF receives a 4-hour fire resistance rating.

Greenblock® Worldwide Corporation ( has just learned that their 6-inch core insulated concrete form (ICF) assembly has received a 4-hour fire resistance rating from the internationally recognized testing agency, Intertek Testing Services NA, Inc.

Greenblock had previously completed evaluation testing on its 4-inch core ICF wall system and achieved a two hour fire resistance evaluation. With that in mind, the company fully expected the evaluation for its 6-inch core to be at least 3 hours.

“We were confident that we would get a 3-hour with our 6-inch block,” said Steve Reiter, who handles building code issues for Greenblock. “However, the 4-hour rating was a pleasant surprise. I know of only one other ICF company that has achieved 4-hours with their 6-inch core product,” continued Reiter.

With a 4-hour fire resistance evaluation, Greenblock’s 6-inch core ICFs are well-suited to meet the strictest of commercial building designs. Educational, government and healthcare facilities all look for wall system designs that provide the maximum protection against weather, pollutants and fire. Greenblock’s 6-inch core ICF wall system easily exceeds these requirements and still offers the design flexibility found more commonly in the smaller concrete core ICFs. “We’ve now effectively brought together the two most important aspects of structural design for the architects and engineers of these projects,” said Reiter. “Maximum protection and structural integrity along with design flexibility and appearance.”

To review the complete fire resistance evaluation report, please go to and click on the Technical section.

Greenblock Worldwide Corporation
John Riddle