A thorough commercial roof inspection involves more than just looking for visible damage. A comprehensive assessment of all roofing-related systems is required to verify the functionality of your commercial roof. To assist with your roof inspections, Delta Innovative Services has developed this commercial roof inspection checklist to help you identify potential issues early and extend the life of your roof.
While regular self-inspections using this commercial roof inspection checklist can help prevent costly repairs, Delta Innovative Services offers professional inspection programs for those seeking expert evaluations. Our fast, reliable inspections and customized maintenance plans keep your roof in top condition year-round.
However, for those who prefer a hands-on approach, we’ve provided a detailed checklist below. Following this thorough inspection process will help you address critical areas of your roof, spot potential problems early, and maintain its integrity.
Comprehensive Commercial Roof Inspection Checklist
Use this thorough inspection process to keep your commercial roof in peak condition. The checklist below highlights vital areas to focus on, ensuring no critical aspect of your roof’s health is overlooked.
1. Pre-Inspection Preparation
Before starting your roof inspection, revisit previous reports to identify any issues or recent repairs that may need follow-up.
✔ Gather past inspection reports, warranties, and maintenance records.
✔ Note any ongoing issues that need revisiting, including any recent repairs.
✔ Confirm that the roof is clear of debris, snow, and ice so that you can thoroughly inspect the entire area.
2. Roof Surface Inspection
Begin with a general review of the roof surface for visible damage or deteriorating materials:
✔ Cracks, punctures, or tears in roofing membranes (e.g., TPO/PVC, EPDM, metal roofs).
✔ Areas of pooling water that might indicate drainage problems or low spots.
✔ Signs of damaged or worn-out coatings.
✔ Any visible signs of deterioration or wear to roofing materials, such as blisters, soft spots, or exposed substrate.
3. Review Flashing, Seals, and Joints
Water can make its way under your roof membrane through the tiniest of spaces:
✔ Flashing around chimneys, skylights, vents, and HVAC units. Look for cracks or gaps.
✔ Seals and joints, particularly at roof transitions. Note any signs of separation or deterioration.
✔ Areas where different materials meet, ensuring proper adhesion and water-tightness.
Flashing and seals are common locations for leaks, so a thorough check is critical.
4. Clear Drainage Systems and Gutters
Your drainage systems can only function if they are completely clear and accessible:
✔ Gutters and downspouts for clogs or damage.
✔ Roof drains for blockages that may cause standing water.
✔ Signs of water backups or areas where ice dams could form in winter.
Proper drainage is crucial for avoiding water buildup and ice-related damage.
5. Roof Penetrations
Areas where fixtures or equipment penetrate through your roof require close inspection:
✔ Proper sealing around pipes, vents, HVAC systems, and skylights.
✔ Water stains or moisture marks inside the building may indicate a hidden leak.
✔ Signs of corrosion, rust, or wear around roof penetrations.
Penetrations are prone to leaks, so maintaining their seals is essential.
6. Insulation and Ventilation Check
Inspect your roof’s insulation and ventilation ducts:
✔ Insulation that has settled, compacted, or become wet loses its effectiveness.
✔ Ventilation systems that are blocked or malfunctioning can lead to moisture buildup and ponding.
✔ Signs of mold or moisture in attics or ceilings. These issues often point to hidden ventilation problems that can cause long-term damage if left unresolved.
Adequate insulation and ventilation are crucial to preventing ice dams and ensuring energy efficiency.
7. Structural Elements Inspection
For the structural components of your roof, be sure to inspect:
✔ Beams, joists, and supports for rust, rot, or structural wear.
✔ The roof deck for signs of movement, shifting, or stress under heavy loads (especially snow).
✔ Any visible sagging or warping in the roof’s structure.
These elements are critical to the roof’s stability and should be inspected regularly, especially before and after severe weather events.
8. Edge Details Inspection
Roof edges and parapet walls are especially prone to damage from wind and water:
✔ Inspect parapet walls for signs of wear or damage.
✔ Check roof edges and metal edging for signs of corrosion or deterioration.
✔ Make sure the roof membrane is secure around the edges.
9. Roof Membrane Attachment (if applicable)
For roofs that rely on membranes like TPO/PVC or EPDM:
✔ Ensure membrane attachment points are intact, with no signs of detachment or peeling.
✔ Inspect seams to verify they are still watertight.
10. Documentation and Reporting
After completing your inspection, document any issues you’ve uncovered, including items that require immediate attention and any developing problems that need monitoring:
✔ Take photos of damaged areas for reference and future comparisons.
✔ Create a detailed report outlining the roof’s condition and all necessary repairs.
✔ Address all issues promptly to avoid escalating problems.
This comprehensive commercial roof inspection checklist will guide you through an adequate inspection and help ensure your roof’s long-term performance.
Schedule Your Comprehensive Roof Inspection Today
A well-maintained roof ensures the safety of your building and the smooth operation of your business, preventing unnecessary downtime and damage. Regular inspections, thorough documentation, and immediate repairs will prolong the life of your roof and protect your long-term investment.
At Delta Innovative Services, we understand the importance of routine, thorough commercial roof inspections. With over 250 years of combined experience and a commitment to responsive service, we can have a technician on-site within 24 hours and deliver a proposal within 48 hours.
Our expert crews keep your roof in top condition, providing peace of mind and year-round protection for your business. For more complex issues or expert guidance, Delta Innovative Services offers professional inspection and maintenance services tailored to your needs.