modesto commercial roofing

Recognizing Signs That Your Commercial Roof Is Ready for Replacement

As a business owner, maintaining the integrity of your commercial building is crucial to ensure the safety and productivity of your operations. One key aspect of this maintenance is the roof. Over time, even the most durable roofs will show signs of wear and tear. Recognizing when your commercial roof needs replacement can save you from costly repairs and potential damage to your property. Here, we’ll explore the telltale signs that your commercial roof is ready for replacement, with a focus on the services available in Modesto commercial roofing.

1. Age of the Roof

Lifespan of Common Commercial Roofing Materials

  • EPDM Rubber Roofing: 20-25 years
  • TPO (Thermoplastic Olefin) Roofing: 15-20 years
  • PVC Roofing: 20-30 years
  • Built-Up Roofing (BUR): 20-30 years
  • Metal Roofing: 30-50 years

If your commercial roof is approaching or has exceeded its expected lifespan, it’s time to consider a replacement. Even if it appears to be in good condition, aging materials may fail unexpectedly.

2. Frequent Leaks and Repairs

A clear indication that your roof may need replacement is the frequency of leaks and the necessity for repairs. While occasional repairs are normal, frequent issues suggest that the roof is no longer effective in protecting your building. Persistent leaks can lead to water damage, mold growth, and structural problems.

Signs of Water Damage:

  • Water stains on ceilings and walls
  • Mold or mildew presence
  • Damp or musty odors


3. Visible Damage

Roof Membrane Issues

  • Cracking and Blistering: Common in older roofs, these signs indicate that the roofing material is deteriorating.
  • Tears and Punctures: Damage to the roof membrane can compromise its ability to keep water out.

Structural Damage

  • Sagging Roof Deck: A sagging roof deck suggests underlying structural issues that could lead to a collapse if not addressed promptly.
  • Damaged Flashing: Flashing is critical for waterproofing roof penetrations. If it’s damaged or missing, it can lead to leaks.

4. Rising Energy Bills

An often-overlooked sign of a failing roof is an increase in energy costs. A well-insulated and intact roof helps regulate the building’s temperature. If your heating and cooling costs are rising without a clear reason, it might be due to poor insulation from a compromised roof.

5. Pooling Water

Flat and low-slope commercial roofs are prone to water pooling. While some pooling after a rainstorm is normal, water that remains for more than 48 hours can cause significant damage to the roofing material, leading to leaks and structural issues.

Causes of Pooling Water:

  • Clogged drains
  • Poor roof design or installation
  • Deterioration of roofing materials

6. Daylight Through the Roof

If you can see daylight coming through the roof boards, it’s a definite sign that the roof’s integrity has been compromised. This can lead to water intrusion and further damage to the roof and interior of the building.


7. Granule Loss

For commercial roofs with asphalt shingles, granule loss is a sign of aging. Granules protect the shingles from UV rays and weather elements. Significant granule loss indicates that the shingles are nearing the end of their lifespan.

Why Choose Peterson Roofing for Your Commercial Roof Replacement in Modesto?

At Peterson Roofing, we understand the unique challenges faced by commercial property owners. Our team of experts is dedicated to providing top-notch roofing solutions tailored to your specific needs. Here’s why you should consider us for your commercial roofing needs in Modesto:

  • Experience and Expertise: With years of experience in the industry, our team is well-versed in handling various commercial roofing projects.
  • Quality Materials: We use only the best materials to ensure the longevity and durability of your new roof.
  • Comprehensive Services: From inspection and maintenance to repair and replacement, we offer a full range of roofing services.
  • Customer Satisfaction: Our commitment to customer satisfaction is evident in our attention to detail and personalized service.


Recognizing the signs that your commercial roof needs replacement is crucial to maintaining the safety and efficiency of your building. By addressing these issues promptly, you can avoid costly repairs and potential disruptions to your business. If you need expert roofing services in Modesto, look no further than Peterson Roofing. Contact us today to schedule an inspection and learn more about how we can help protect your commercial property.

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