When Is It Time for a New Roof?
A typical commercial roof carries a 20-year warranty and, with proper maintenance, can last even longer. But how much longer, and how do you know when it’s time to consider a replacement?
If your roof is out of warranty, you may already be wondering about replacement. However, if it has been proactively maintained through a managed roof care program, it could outlast its warranty by 10 to 15 years. In other words, age alone doesn’t determine whether you need a new roof, it’s really about condition.
Signs It’s Time for a Commercial Roof Replacement
1. Persistent Roof Leaks
This one is obvious. If leaks are becoming a recurring issue, especially after major storms, it’s likely your roof system needs extensive repairs or a full re-roof.
2. Visible Membrane Damage
Cracks, ridges, or punctures in the roof membrane compromise the integrity of the system and indicate it may be nearing the end of its service life.
3. Membrane Flaking
On EPDM roofs, a common warning sign is membrane flaking. If you rub your finger across the surface and material flakes off, the roof has reached the end of its useful life.
4. Wet Insulation
If large sections of your roof feel soft underfoot, this often means water has infiltrated the system. Wet insulation loses effectiveness and can quickly lead to widespread structural issues.
5. Changes in Building Usage
If your property is undergoing a significant change in use—such as installing heavy rooftop equipment, expanding occupancy, or increasing energy demands—a new roof system may be necessary to support those changes.
Replacement Isn’t Always the Only Option
In some cases, a full replacement may not be needed right away. If the roof membrane is still in good shape, a roof restoration can extend the life of your system for several more years.
We specialize in roof restorations that extend the lifespan of aging commercial roofs while giving property owners peace of mind. Our experts can assess your system and recommend whether a restoration or replacement is the best option for your building.
Is it time for a new roof? Contact us today to schedule an inspection and discover whether restoration or replacement is the right solution for you.










Greenwood Industries’ longstanding reputation for excellence in commercial roofing extends to GRS’s work on large-scale public facilities. A prime example is Magazine Beach in Cambridge. The historic brick building, which houses the pool’s facilities, required a new roof in preparation for the busy summer season. GRS installed a durable EPDM roofing system, ensuring the structure is well-protected and ready to serve the community.
Sawmill Restoration: Upon arrival, the GRS team discovered that the historic wooden sawmill was home to a colony of baby bats. The project was temporarily paused to allow the bats to mature and leave the building safely. Once they departed, GRS completed the restoration with a beautiful cedar shake roof, preserving the sawmill’s historic character.
GRS’s work spans every corner of Massachusetts, including offshore projects like Peddocks Island in Boston Harbor. The team replaced the roof on the island’s historic chapel—a project that required unique logistics, including an amphibious landing to transport materials and equipment onto the beach. This successful re-roofing not only preserved the chapel but also showcased GRS’s adaptability to challenging work environments. The team is now preparing for additional projects on the Boston Harbor Islands.



