Commercial Storm Damage Claims: A Guide for Business Owners

When hail or high wind hits a commercial building, the stakes are different from a house. The roof is bigger, the systems are different, there may be tenants and leases involved, and every day of leaking can mean damaged inventory, closed spaces or lost business.

This guide is for business owners and property managers in the Tulsa area: what to do after a storm, how commercial roof claims differ from residential ones, and how to keep the process moving.

Right After the Storm

1. Make it safe. Keep people out of areas with active leaks, sagging ceilings or wet electrical. Don't send staff onto the roof.
2. Stop the water. Move inventory and equipment away from leaks, set out containers, and arrange emergency repairs to keep more water out. Most policies expect you to take reasonable steps to prevent further damage.
3. Document everything. Photograph leaks, ceiling damage, wet inventory, damaged rooftop units, and dents on gutters, downspouts, siding and vehicles. Note the date and time of the storm.
4. Notify your insurer and your agent promptly. Policies have deadlines for reporting a loss.
5. Check your lease if you're a tenant or landlord, to see who is responsible for the roof and for reporting.

How Commercial Roof Claims Differ

Different roof systems

Commercial buildings often have low-slope roofs: TPO, EPDM, modified bitumen or built-up roofs, plus metal. Hail damage looks different on each. Single-ply membranes can be punctured or fractured, coatings can crack, metal panels dent, and the insulation board under a membrane can be crushed even when the surface looks fine.

Damage you can't see from the surface

On a low-slope roof, the most expensive damage is often hidden: water that's soaked into the insulation under the membrane. Core cuts, small samples cut through the roof system and patched afterward, show whether the insulation is wet and what the roof is built from. That matters for both the claim and the repair plan.

Deductibles

Commercial policies often have different wind and hail deductibles than homeowners policies, sometimes a percentage of the building's insured value. On a large building, that can be a significant number. Know yours before you file.

Rooftop equipment

HVAC units, condensers, vents, skylights and curbs can all be damaged by hail. Fins on HVAC units are a common indicator of hail size and direction.

Business interruption

Some commercial policies include business income or business interruption coverage if storm damage forces you to close or limits operations. Ask your agent what your policy includes and what records you need to keep.

More parties

Owners, tenants, property managers, lenders and sometimes multiple insurers can all be involved. Decide early who is the point of contact, so the adjuster and contractor aren't getting different answers.

What a Good Commercial Inspection Covers

• Every section of the roof, including parapets, edges and rooftop units
• Membrane, coating or panel damage, documented with photos
• Core cuts where needed to check for wet insulation and confirm the roof's makeup
• Drains, scuppers and gutters, where water backs up
• Flashing at walls, curbs and penetrations
• Interior leak locations, traced back to their source on the roof
• A written scope that lays out repair or replacement options

Working With the Adjuster

Have your roofer meet the adjuster on the roof, with the damage already documented. Commercial roofs are large and complicated, and a walk-through together makes it far less likely something gets missed. If items do get missed, or hidden damage turns up once work begins, they can be added to the claim with a documented supplement.

Under Oklahoma Insurance Department rules, insurers must acknowledge a claim within 20 business days and accept or deny it within 45 business days of receiving a properly executed proof of loss. Keep copies of everything you send and receive.

Repair, Restore or Replace?

Depending on the system, the damage and the roof's age, the answer may be:

• Repair for isolated punctures, seams or flashing
• Restoration with a coating, for roofs that are dry and structurally sound (see our roof coating guide)
• Replacement when the membrane is widely damaged or the insulation is wet

Our guides on TPO vs. EPDM and commercial roof cost can help you think through replacement options.

Watch Out for Storm Chasers

Commercial properties get door-knockers after storms too. Be careful about signing anything on the spot, never sign over your insurance benefits, and verify that any contractor is registered with the Oklahoma Construction Industries Board and carries insurance. In Oklahoma, it's illegal for a contractor to waive or cover your deductible.

Plan Ahead for the Next Storm

• Keep photos of the roof's current condition on file
• Know your deductible and your reporting deadlines
• Keep drains and scuppers clear
• Set up a commercial roof maintenance plan with regular inspections

Frequently Asked Questions About Commercial Storm Claims

How do I know if my commercial roof has hail damage?

Interior leaks, dented rooftop units and gutters, and visible damage to the membrane are signs, but much of the damage on a low-slope roof is hidden. A professional inspection, with core cuts where needed, is the best way to know.

What is a core cut?

A small sample cut through the roof system and patched afterward. It shows what the roof is made of and whether the insulation underneath is wet.

Does commercial insurance cover lost business after a storm?

Some policies include business income or business interruption coverage. Check your policy and talk to your agent.

Who handles a roof claim when the building is leased?

It depends on the lease. Many leases make the owner responsible for the roof, but terms vary. Check the lease and agree on a point of contact early.

Get a Commercial Roof Assessment

We provide free commercial roof assessments with photos, core cuts where needed, and a written scope, and we can meet your adjuster on the roof. RainTech is Carlisle-certified for commercial roofing. Learn more on our commercial roofing page, or request a free assessment.

RainTech Roofing is a licensed Oklahoma roofing contractor, not a public adjuster, insurance agent or attorney. This is general information; your policy and lease control coverage and responsibility.

Related Reading

• Commercial Roof Inspection Checklist
• Flat Roof Repair for Tulsa Warehouses
• Roof Insurance Supplements, Explained

Request Your Free Commercial Roof Assessment →

Sources and disclaimer. Information in this article comes from manufacturer documentation, industry standards and RainTech’s own commercial roofing experience. It was current as of October 14, 2026; laws, insurance rules, manufacturer terms and prices change. This article is general information, not legal, insurance, tax or financial advice.