Can Hail Damage a TPO Roof? (6 Step Guide to Inspect & Repair)

If you’re wondering, can hail damage a TPO roof? The answer is yes. While TPO is a durable and widely used roofing system for commercial buildings, it’s not immune to hail impact, especially as it ages or if the membrane is thin. One bad storm can lead to punctures, seam damage, or even water infiltration if left unchecked.

Hailstorms are one of the leading causes of commercial storm damage in the U.S. Understanding how TPO holds up and what to do after a storm helps protect your investment.

• Flat roofs are more exposed: Hail hits flat surfaces with full force, making impact damage more likely.
• TPO membranes vary in thickness: Some systems resist hail better than others, depending on grade and installation.
• Timely inspections prevent bigger problems: Spotting small damage early can save thousands in structural repairs.

This guide walks you through the signs of hail damage, what to inspect, and how to repair or replace a TPO roof after a storm.

❗️ How Hail Affects TPO Roofing Systems

TPO (thermoplastic polyolefin) is a popular single-ply membrane used in commercial and industrial roofing. It’s known for its energy efficiency, affordability, and ease of installation. However, like all roofing materials, it has its limits under severe weather conditions.

Vulnerabilities of TPO in Hailstorms

TPO membranes are especially vulnerable to punctures from large hailstones. The surface may appear intact, but hail can compress insulation underneath or create tiny cracks in the membrane.

• Direct impact risk: Flat roofs take the brunt of hail directly, rather than at an angle like sloped roofs.
• Age and UV exposure: Older TPO roofs become more brittle, making them more susceptible to cracking or tearing.
• Thin membranes: TPO comes in various thicknesses (typically 45 mil to 80+ mil). Thinner products offer less protection.

Signs of Hail Damage on a TPO Roof

• Puncture marks: Small holes or dents where hail has broken through the top layer.
• Membrane discoloration: Scuffing or burnishing on the white surface may indicate direct hits.
• Crushed insulation: Soft spots under the membrane show where hail compressed the underlying foam board.
• Loose seams or flashings: Impact can weaken seams, especially at T-joints and terminations.

📋 6 Step Guide to Inspect and Repair Hail-Damaged TPO Roofing

After a hailstorm, quick action can prevent minor damage from becoming a major repair. Here are six steps to properly inspect and address hail damage to your TPO roof.

1. Perform a Visual Roof Walk

Start with a basic visual check as soon as it’s safe to access the roof.

• Look for debris: Clear off leaves, branches, and hail that may be covering damage.
• Check for impact points: Scan for dents, punctures, and crushed insulation under the membrane.
• Mark suspicious areas: Use chalk to mark damage for documentation and repair planning.

2. Examine Rooftop Equipment and Accessories

Many commercial buildings have HVAC units, skylights, or solar panels mounted directly on the roof. These areas are prime targets for hail damage.

• Check metal flashing and curbs: Look for dented metal or displaced edges.
• Inspect unit housings and vents: Broken fan covers or bent panels may signal severe hail impact.
• Note signs of moisture: Pooling near units can indicate roof membrane breaches.

3. Document the Damage for Insurance

Commercial storm damage claims require thorough documentation. The more detailed your records, the easier it is to get fair coverage.

• Photograph everything: Include close-ups of punctures, wide-angle shots of the roof, and images of nearby hail.
• Record the date and time of the storm: If you can, reference weather reports showing hail size and severity.
• Keep track of repairs: Save receipts and inspection reports for insurance and maintenance records.

4. Call a Commercial Roofing Specialist

Don’t rely on a general contractor to assess TPO damage. Call a roofing company with specific experience in commercial membrane systems.

• Specialized knowledge: Industrial roofing professionals know how to detect subtle membrane damage and evaluate your full system.
• Moisture testing: Roofers may use infrared scans or core sampling to detect trapped water under the membrane.
• Expert guidance: A pro can recommend whether repairs or full replacement is the better option.

5. Repair or Patch the Affected Areas

If the damage is isolated and the rest of the system is in good shape, repairs may be possible without full replacement.

• Welded patches: TPO patches can be heat-welded over punctures for a watertight seal.
• Flashing replacement: Torn or dented metal edges can be resealed or replaced.
• Insulation repair: Crushed areas may require removing and replacing the foam board underneath.

6. Schedule Ongoing Inspections and Maintenance

One storm can weaken your roof. Regular inspections help ensure that small vulnerabilities don’t turn into leaks or structural damage over time.

• Biannual inspections: Schedule a checkup in spring and fall to monitor your TPO roof’s condition.
• Post-storm assessments: After any severe weather event, have your roof evaluated by a trusted professional.
• Proactive upgrades: Consider reinforcing vulnerable areas or upgrading to a thicker membrane if hail is a recurring threat.

⭐️ Why TPO Remains a Smart Choice—Even in Hail-Prone Areas

Despite its vulnerabilities, TPO remains one of the most cost-effective and resilient choices for commercial roofs. With proper maintenance and quality installation, it can withstand most weather events, including moderate hailstorms.

• Energy efficiency: The reflective white surface helps reduce cooling costs for warehouses and industrial spaces.
• Ease of repair: Damage can often be fixed with patches rather than full replacement.
• Compatibility with upgrades: Additional insulation, protective mats, or higher-grade membranes can increase hail resistance.

Property managers and facility owners who stay proactive about maintenance typically get the longest service life from their TPO systems—even in high-risk storm zones.

📞 Call Embry’s Roofing for Hail Damage Inspection and Repair

So, can hail damage a TPO roof? Absolutely—but with the right inspection steps and fast action, that damage doesn’t have to lead to costly interior repairs or downtime. Whether you manage a warehouse, a retail building, or a multi-tenant facility, Embry’s Roofing has the tools and experience to handle all your commercial storm damage needs.

Our team specializes in industrial roofing systems, including TPO, EPDM, modified bitumen, and more. If your building has taken a hit, we’ll inspect the damage, guide you through repairs, and help you protect your investment for years to come.

Schedule a free commercial roof inspection with Embry’s Roofing today and get peace of mind before the next storm hits.