Commercial roofs have varying lifespans. TPO roofs have the shortest life, with a maximum of 20–30 years. Meanwhile, asphalt roofs can last up to 40 years, and metal roofs can last up to 45. These are simply the documented life spans as they exist on paper, however. Under real-world conditions, most commercial roofs never last as long as their projected life.
Replacing a roof is expensive in terms of materials, cost of labor, and lost productivity. There’s also a loss of investment to think about. If you invest in a commercial roof with a lifespan of 40 years and it only lasts for three decades, then your roof is suddenly amortized over a much shorter amount of time. In other words, if you can extend the lifespan of your commercial roof, then your initial investment becomes much more bearable over time.
Lastly, there’s not just the roof itself to consider. The pipe supports on your roof hold gas pipes, refrigerants, electrical and internet cables, HVAC, and more. If and when these supports break down, the equipment upon them could break, exposing your roof to a variety of hazards that range from chemical spills to fires—all of which would cause the roof to fail to meet its expected lifespan without the help of an experienced commercial roofing company.