How long will PERMADOCK last?
Scores of off-shore drilling rigs have had exterior manways of the materials used for PERMADOCK in place for decades; some for as longs as 45 years. There has been no evidence of deterioration. Without undue abuse and with reasonable preventive maintenance, PERMADOCK should outlast one’s mortgage or bond issue. Current resins and technology have made significant advancements over the first generation 45 years ago. The PERMADOCK limited warranty extends for 50 years.
