Study Shows SPF Outperforms
Membrane Roofs over 30-year Life Cycle

A new Life Cycle Cost Analysis of SPF roofing systems shows in most situations, SPF roofing systems have a lower 30-year Life Cycle Cost than membrane roof systems. The study performed by Michelson Technologies was conducted in accordance with ASTM E-917, "Standard Practice for Measuring Life-Cycle Costs of Buildings and Building Systems."

According to Ted Michelson, "The 30 year study period shows Spray Polyurethane Foam (SPF) having a cost advantage over membrane roofs from a low of 13% up to 56% based on the national numbers." The lowest cost difference assumes a re-coating schedule of every 6 years and the 56% cost difference assumes a re-coating schedule of every 15 years.

Considering that Dr. Rene Dupuis' latest survey showed the re-coating average of SPF roofs rising from 11 years to 15 years, this is welcome news indeed.