7 Telltale Signs That A Commercial Roof Needs Repair

Commercial Flat Roof with Bubbles
Commercial Roof with Bubbles

When was the last time you checked the condition of your commercial roof?

 Flat roofs are a haven for debris from storms and strong winds. Incorrect roofing installation poses several problems, and don’t forget gradual damage from walking on the surface and other wear and tear. If left unattended, these issues can lead to permanent damages that affect your company’s budget, energy costs, safety, and reputation. Don’t wait until there’s a safety hazard to get a new commercial roof. Spare yourself the costs, and audit your roof for these 7 telltale signs your commercial roof needs repair.

1. Do You Smell Something?

Does your commercial space smell musty?

If so, you may already have a mold problem. This is likely due to stagnant water collecting on your flat roof. Humidity and trapped moisture also cause algae and mold growth.

Not only is black mold an eyesore for clients and the city, but it also puts your employees’ health at risk. If left to grow, black mold can cause dizziness, fatigue, chronic respiratory problems, migraines, and skin conditions. This also makes you liable for any work-related ailments caused by roofing mold.

Your roof may be saved with early intervention. Book a maintenance call ASAP to remove mold, check for leaks, and make necessary repairs before the next rainfall. If your roof mold proliferates, get a brand new commercial roof to avoid future repair costs.


2. You Have Frequent Water Leaks

Commercial roof mold is a surefire sign of a water leak.

Several factors make commercial roofs vulnerable to leaks:

  • Heavy storms
  • Old roofing materials
  • Roofing accidents
  • Improper roofing installation
  • Weak roofing seams
  • Lack of maintenance

Even your HVAC unit and other heavy rooftop equipment can cause roof leaks. When old rooftop equipment is left to rot, it’s easier for water to sneak through. For example, your old rooftop ventilation system may not be waterproof, allowing rain to seep through the access panels.

Rooftop puddles aren’t your only leak concern after storms, either. If your flat roof gutters are stuffed with debris and standing water, that’s another recipe for mold. The best way to avoid moldy gutters is to book routine maintenance appointments.

Flat roofs need a good drainage system to keep mold and leaks away. This is another reason to invest in a new commercial roof than spend money on multiple repairs down the road.


3. Your Roof Is Bubbling and Blistering

What happened to your flat roof? Why is the surface covered in bubbles and blisters?

Gradual wear and tear is a leading cause of bubbling. Walking on the roof and weather changes will eventually lift your roofing materials, creating a bubbling effect. Moisture buildup, shoddy installation work, and bad ventilation also cause bubbling or blistering.

Roof bubbles grow in size due to weather. The warm air helps bubbles expand, and cold temperatures help trapped air and standing water compress. This will eventually cause roof bubbles to pop, which leads to more costly repairs.

A roofer can patch up a few blisters, but the more your roof bubbles, the greater the risk of irreparable damage. Mitigate roof bubbling by installing a brand new commercial flat roof.


4. Your Roof Is Cracking

Does your flat roof resemble alligator skin?

This is a common problem with old flat asphalt roofs. Cracking, also known as “alligatoring,” is a clear sign that you need a new commercial roof.

Alligatoring is caused by prolonged exposure to the sun. Over time, UV rays dry out your roof’s membrane, leaving unsightly cracks in the roof’s surface. Alligatoring also makes your roof more susceptible to rooftop accidents and leaks.

Cracks only worsen over time, especially as temperatures fluctuate. Indoor heating and cooling systems also contribute to severe roof cracks.

Cracks are also a sign of age. Flat roofs last roughly 15 years and even longer with routine maintenance. Cracks are your roof’s way of saying it’s time for a replacement.

Flat roofs withstand more force and pressure, making them more vulnerable to cracks than other roof types. Strengthen your flat roof with a single-ply or modified bitumen system, so it can better withstand temperature fluctuations, weight, and stress.

Don’t leave roof cracks exposed for too long, either. Moisture loves to collect between the crevices, creating the perfect breeding ground for algae and mold. Make sure your new roof has a watertight surface coating to prevent leaks.

















5. Skyrocketing Energy Bills

One of the most gutwrenching signs is high energy bills. High energy costs really take a bite out of profits, and your roof is a surprising contributor.

If your energy bills suddenly increase, your HVAC system is working overtime to generate heat. HVAC systems rely on indoor temperatures to accurately assess and distribute heat. Weak roofing makes your HVAC system run longer, increasing your costs.

Robust roofing systems insulate homes and trap heat and cold air indoors, which puts less strain on your heating and cooling systems.


6. Interior Damage to Your Business

Exterior damage hurts your property’s curb appeal and scares away foot traffic, but did you know roof damage also shows on the inside?

Roof leaks can cause unsightly water damage on the interior walls of your lobby, office, conference room, or store. Leaks also leave ceiling spots, cracks, and plaster blistering. By that time, you’ll need internal repair work, along with a new roof.

If there’s interior water damage, there’s likely a mold problem brewing. Don’t risk the health and safety of your customers and staff. Book a roofing appointment ASAP to maintain safety and compliance.

New roofing is a critical business investment, but upkeep is just as necessary. Avoid mounting repair costs, and book annual inspections to ensure your roof is in top shape.


7. Roof Age

If your roof has been there for a long time, then you can be sure that it will have undergone almost all harsh conditions of the weather. This means its condition is likely to deteriorate as well with age! You might need an inspection just so we know what’s wrong before our repairs are complete and everything looks good again- but don’t worry if some signs aren’t necessarily bad news? Our team at Central Roofing Company knows how important this step is in making sure everything goes smoothly during installation or maintenance work on roofs.



Running a business is not easy. You have to wear many hats, and it’s important that you maintain the right structure for success.

Have more questions about our commercial roofing process? Central Roofing Company in Gardena, Los Angeles. Contact us to learn more or request an estimate right away!


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