Modern industrial and commercial buildings often feature flat or low-slope roofing systems made from materials like EPDM, TPO, PVC, or modified bitumen. These roofs became popular in the mid-1800s due to their cost-effectiveness, efficient use of space, and reduced risk of snow sliding off onto sidewalks. However, unlike steep-slope roofs, flat and low-slope systems require ongoing inspections and preventative maintenance to preserve their integrity, optimize energy efficiency, and avoid expensive emergency repairs.
Below is a comprehensive checklist of essential maintenance tasks and inspection guidelines that will help ensure your commercial roof performs reliably year-round. Whether your roof is brand-new or decades old, regular maintenance visits, timely inspections after equipment installations, and seasonal tune-ups are critical to achieving the roof’s maximum lifespan.
Safety and Professional Oversight
All roof inspections and maintenance activities should be performed by qualified professionals who adhere to OSHA guidelines, wear appropriate PPE, and use fall protection systems. Working with reputable, certified roofing contractors helps ensure thorough, incident-free inspections and properly executed repairs.
Establishing a Regular Inspection and Maintenance Schedule
Why It Matters:
Routine maintenance and scheduled inspections are foundational to preventing small problems from escalating into costly, large-scale repairs. A proactive maintenance plan keeps your building protected, maintains warranty compliance, and ensures workers and equipment remain safe underneath a solid, leak-free roof.
When to Inspect:
By Roof Age
- Under 10 years old: At least one comprehensive inspection per year.
- 10 years or older: Seasonal inspections (spring and fall) plus additional checks after major storms.
After Severe Weather Events:
If your area experiences hail, high winds, or heavy rain, follow up with an inspection to identify any new damage while it’s still manageable.
Regular Maintenance Visits for Commercial Roofs:
Consider scheduling routine service calls—twice a year or as recommended by your roofing contractor—where professionals will inspect the entire system, reseal vulnerable areas, clear debris, and confirm that drainage systems are functioning correctly.
After New Equipment Installations:
Any time new HVAC units, vents, solar panels, or other mechanical equipment are installed on the roof, have a roofing contractor inspect the flashings, membrane seams, and support structures. This ensures that the addition does not compromise the roof’s integrity.
Seasonal Tip:
- Spring: Check for damage from ice, snow, and freeze-thaw cycles.
- Fall: Prepare for winter weather, reinforcing sealants, clearing drains, and confirming the roof is storm-ready.
- Post-Installation: Inspect after any new rooftop equipment installations to prevent leaks and structural issues.
Comprehensive Checklist Items
1. Locate Roof and Gutter Debris
Why It Matters:
Branches, leaves, and trash accumulate easily on flat roofs and can block gutters and drains. Standing water leads to membrane degradation, mold growth, and leaks.
Preventive Action:
Clear debris regularly (each maintenance visit) to ensure proper drainage. This simple step can significantly extend the roof’s service life.
2. Identify Ponding Water
Why It Matters:
Stagnant water weakens roofing materials and can lead to interior leaks, mold, and compromised structural integrity.
Preventive Action:
Ensure that drains and scuppers are unobstructed. Adjust rooftop slopes or install additional drains if ponding is persistent.
3. Check for Cracking, Blistering, and Membrane Damage
Why It Matters:
Extreme temperatures, UV exposure, and debris impact can cause cracks or blisters in roofing membranes and flashings. Left unaddressed, these become entry points for water and can increase energy costs due to reduced insulation efficiency.
Preventive Action:
Regular resealing of flashing, patching damaged membranes, and replacing worn sealants keep the roof watertight and stable.
4. Inspect All Terminations
Why It Matters:
Termination bars, edge metal, and secure perimeters prevent wind uplift and moisture infiltration. Improperly sealed edges allow water and debris to seep in, leading to hidden rot and insulation damage.
Preventive Action:
Verify that all terminations are tight, properly aligned, and sealed during each inspection. Immediate correction of gaps ensures long-term roof performance.
5. Assess Structural Integrity
Why It Matters:
Blisters, cracks, and material deterioration may indicate deeper structural issues. Heavy roofing materials can strain older building frames, risking partial collapse or expensive structural reinforcement.
Preventive Action:
For older roofs or those showing widespread distress, schedule more frequent, in-depth structural evaluations. Addressing foundational issues early prevents costly interventions later.
6. Check Downspouts and Drainage Elements
Why It Matters:
Damaged or clogged downspouts fail to channel water away from the roof and foundation. This can lead to interior flooding, mold growth, and even foundation settling.
Preventive Action:
Inspect and clear downspouts during each maintenance visit. Replace damaged components to maintain effective water management.
Additional Preventive Maintenance Tips
Routine Care:
- Seasonal Coatings: Apply roof coatings or reflective membranes before extreme seasonal conditions to improve energy efficiency and extend membrane life.
- Equipment Coordination: Coordinate maintenance visits with HVAC service checks or other rooftop equipment maintenance to streamline efforts and keep the roof surface undamaged.
Energy Efficiency and Costs:
Investing in insulation upgrades, reflective membranes, and proper ventilation can reduce energy costs, ease HVAC loads, and maintain a comfortable building interior.
Quick-Reference Checklist
- Debris & Drainage: Clear roof surfaces, gutters, and downspouts.
- Surface Integrity: Inspect for cracks, blisters, and damaged flashings.
- Terminations: Ensure bars and edge materials are properly sealed.
- Structural Integrity: Check for deeper material or support issues.
- Equipment Additions: Inspect after installing new rooftop machinery.
- Regular Maintenance Visits: Schedule seasonal inspections and follow-ups after severe weather.
Take Action: Protect Your Investment
Regular maintenance visits, timely inspections after new equipment installations, and consistent seasonal care will help you avoid costly repairs, lengthen your roof’s lifespan, and keep your building’s operations running smoothly.
Schedule Your Inspection Today:
Don’t wait for leaks or structural problems to appear. Contact Benton Roofing to schedule a free commercial roof inspection and set up a routine maintenance program that ensures lasting performance, energy efficiency, and peace of mind.
By following this comprehensive checklist and partnering with professional roofing contractors, you’ll strengthen your commercial roof’s resilience against weather, extend its service life, and maintain a safer, more energy-efficient environment for everyone beneath it.