Q and A Questions about the suitability of spray foam for insulating a large tank Questions about the suitability of spray foam for insulating a large tank Q: What is the service / design life A: The foam will last indefinitely as long as it is properly coated and protected… by Administrator November 15, 2013 chat_bubble_outline Tags: elastomer, foam, insulating.tank, polyurethane, spray foam, vapor drive, vapour drive