Learn How Long Metal Roofs Last
There’s no argument that metal roofing systems offer durability and reliable protection for commercial, industrial, and agricultural facilities. But how long can metal roofs actually last? With proper maintenance, metal roofing systems can last at least 40 years and, in some cases, even longer.
Like any roofing material, metal roofs are still susceptible to wear and potential leaks despite their strength and durability. That makes the more important question: how do you maintain a metal roof to ensure it lasts its full projected lifespan?
Common Metal Roof Problems
- Loose seams and fasteners
- Leaks
- Rust
- Corrosion
Understanding common metal roofing problems is essential for effective maintenance. Temperature fluctuations cause metal to expand and contract, loosening seams and fasteners and leading to leaks. Other issues, such as rust and corrosion, are often caused by ponding water, debris, or decaying organic material.
Buildings in coastal environments require extra vigilance, as salt air is particularly harsh on metal surfaces. While metal roofs are more resilient than many other roofing systems, they can still sustain damage from excessive precipitation, hail, and high winds.
Proper Metal Roof Maintenance
Proper care and maintenance require the right roof coating, regular inspections, and prompt repairs.
Metal Roof Coatings
The most effective way to maintain and extend the life of a metal roof is by applying a proper metal roof coating. Several coating options are available depending on the specific needs of your roof.
Reflective Coatings
Highly reflective roof coatings provide thermal stability and help prevent cracking caused by extreme weather conditions. Inland RC-2000 Rubber Roof Coating is an ENERGY STAR-rated product that delivers 87% solar reflectance and resists corrosion, water, ozone, UV rays, acids, and salts.
Waterproof Coatings
Another effective option for metal roofs is RC-2250. This liquid rubber seam sealer is highly effective at sealing and waterproofing fasteners, cracks, seams, and penetrations. It is also ideal for patching roof leaks and performing targeted repairs.
Regular Inspections
Although metal roofs are highly durable, the material reacts with environmental elements over time. Seasonal inspections are critical to keeping the roof in good condition. Prolonged exposure to dirt, debris, and decaying organic matter can lead to corrosion.
Keeping the roof and gutters free of leaves, twigs, and other debris allows rain and melting snow to drain properly. Blockages can trap moisture, accelerating material deterioration. In addition to keeping the surface clean, seams and exposed fasteners should be periodically checked, re-tightened, and resealed to maintain a watertight system.
Repairs
A well-maintained metal roof can last for decades before replacement becomes necessary. Regular inspections help identify minor issues early, allowing repairs before they escalate into major problems.
As metal roofs age, fading and surface wear may occur toward the end of the warranty period. In many cases, a full tear-off is unnecessary. Minor repairs followed by a fresh coating application can significantly extend the roof’s service life.
If you are a building owner or contractor looking for the best roof coating for a metal roof, contact the Inland team today.
