How long will the pressure treated fire retardant last?
The fire retardant lasts for the life of the roof. Tests conducted by the U.S. Department of Agriculture’s Forest products laboratory, independent testing laboratories, and manufacturers prove that the treatment permeates the wood through and through, does not leach out over time, and renders the wood roofing fire retardant for the life of the roof. As building codes and requirements regarding fire retardancy may vary by locale it is best to check with local the local building officials for specific area requirements.
