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Gaco Western’s GacoFireStop passed the industry flammability torture test for the second time last week. GacoFireStop passed the AC 377 Appendix X test for flammability the second time this week exceeding the minimum time of 4 minutes and 18 seconds without a coating. The new test was with the “skin on”, meaning that it passed without any major trimming. GacoFireStop passed the test with flying colors, showing no tendency to burn even beyond the 4:18 time span. The foam in the first test, which was completed on February 3rd, had been shaved, passing a very difficult test. GacoFireStop can now be officially used with or without trimming, and in all cases without any additional coatings.

In most attic and crawl space applications the most skilled foam insulation applicators fill a cavity to a specific thickness and do not trim the foam. For GacoFireStop, passing this “skin on” test builds on the foam’s previous Appendix X test results to give contractors, code officials, home builders, and homeowners confidence that the foam is safe and meets code.

“The results of the second test mean that customers have double the safety,” states Peter Davis, President and CEO of Gaco Western. “Now code officials and all of our customers – builders, contractors, and homeowners – can be doubly certain that GacoFireStop meets and exceeds all relevant fire codes because we passed twice. This test puts GacoFireStop in a class all its own.” As a result of the recent test, Gaco Western will be launching a campaign to educate fire and code officials about GacoFireStop and the characteristics that allow it to pass the most rigorous testing.

“This truly groundbreaking technology definitely has the spray foam market buzzing” says Tom Sojak VP of Sales for the Gaco Western WallFoam division.” No one thought it would be possible for an open cell product to pass the rigorous challenge of the Appendix X test and now we have done it twice.”

The following video shows GacoFireStop under test at the Intertek laboratories in San Antonio, Pennsylvania on June 29, 2011:


In a new NFPA 286 test contractors can now spray GFS up to 12 inches thick in walls, and up to 16 inches thick in ceilings and still meet the stringent E84 fire test requirements.