Hailstorms can cause significant damage to commercial roofing systems, but the effects are not always obvious immediately after the storm passes. A roof may appear undamaged from the ground while hidden punctures, membrane bruising, damaged seams, or compromised flashing allow water to enter the building weeks or even months later.
For Pennsylvania property owners, acting quickly after a hailstorm can help prevent small roofing issues from becoming expensive repairs, operational disruptions, or premature roof replacement. The challenge is knowing what to do first and which warning signs deserve immediate attention.
This guide explains the steps to take after a commercial building experiences hail, how to identify potential damage, and when to arrange professional hail damage roof repair. You’ll also discover how different roofing systems respond to hail and how roofing professionals determine whether repair, restoration, or replacement is the most appropriate solution.
What to do if your commercial roof has been damaged by hail
The first few days after a hailstorm are often the most important. Even if there are no obvious leaks, taking the right steps can help protect the building, simplify future repair decisions, and prevent minor damage from worsening.
Step 1: Check the building for signs of leaks
Start by inspecting the interior of the building for any signs that water may already be entering through the roofing system.
Pay particular attention to:
- Ceiling stains
- Water marks on walls
- Damp insulation
- Dripping water
- Unusual musty odours
- Wet flooring near exterior walls
- Signs of moisture around roof penetrations, skylights, or rooftop equipment
Commercial roof leaks don’t always appear directly beneath the damaged area. Water can travel along insulation, decking, structural members, and building components before becoming visible inside the property. As a result, even a small stain can indicate a larger roofing issue elsewhere.
If you notice any signs of water intrusion, document them immediately and monitor whether conditions worsen during subsequent rainfall.
Not all hail damage causes immediate leaks. Some forms of damage weaken roofing materials without creating an obvious opening right away. This is one reason professional inspections are recommended after significant hail events, even when the building appears unaffected.
If you’re unsure what other signs of hail damage to look for, see the section Signs of hail damage on commercial roofing systems later in this guide.
Step 2: Document any visible damage
Once you’ve checked the building for signs of leaks, the next step is to document any visible storm damage.
Good documentation can be helpful when discussing repair options with a roofing contractor and may also be useful if you need to review insurance coverage or warranty requirements later. Even if the damage appears minor, creating a record of the roof’s condition shortly after the storm can provide valuable context if problems develop over time.
Start by taking photographs of any visible signs of hail impact from safe ground-level locations. Depending on the building, this may include:
- Dents in metal roof panels
- Damage to flashing
- Dents on gutters and downspouts
- Damage to rooftop equipment
- Visible debris caused by the storm
- Damage to skylights or roof-mounted fixtures
It can also be helpful to document the date of the storm and any local weather reports that indicate hail size or storm severity.
Avoid climbing onto the roof to inspect or photograph damage yourself. Commercial roofs can be slippery after a storm, and hail damage may weaken roofing materials in ways that are not immediately obvious. A professional inspection is usually the safest and most reliable way to assess the condition of the roofing system.
Different roofing systems can show hail damage in different ways. For example, damage on a metal roof may appear very different from damage on a TPO, EPDM, or modified bitumen roofing system. Some forms of hail damage are obvious, while others can be difficult to identify without training and experience.
For a closer look at how hail affects different commercial roofing systems, see How hail damage differs by roof type later in this guide.
Step 3: Arrange a professional roof inspection
After a hailstorm, one of the most important steps you can take is arranging a professional roof inspection, even if the building isn’t currently leaking.
Many forms of commercial roof hail damage are difficult to identify from the ground and may not cause immediate problems. A roofing system can continue to keep water out for weeks or months after a storm before hidden damage eventually leads to leaks, insulation problems, or premature roof deterioration.
This is particularly common on commercial roofs because many roofing systems are designed to withstand normal weather exposure. Hail may bruise a membrane, loosen a seam, damage flashing, compromise a roof coating system, or create small punctures that are not immediately visible. The roof may continue functioning for a period before these weaknesses begin allowing water into the building.
A professional commercial roof inspection helps identify both visible and hidden damage before it becomes more expensive to address. During an inspection, a roofing contractor will typically evaluate:
- Roofing membranes and surface materials
- Seams and flashing
- Roof penetrations
- Drainage components
- Roof coating systems
- Signs of impact damage
- Areas where water may be able to enter the building
- The overall condition of the roofing system
For Pennsylvania property owners, prompt inspections can be particularly valuable because hail damage is often followed by periods of heavy rain, summer heat, winter snow, and freeze-thaw cycles that place additional stress on already damaged roofing materials.
The goal of the inspection is not simply to find leaks. It is to determine whether the storm has affected the long-term performance of the roofing system and whether repairs, restoration, or additional monitoring may be required.
Once an inspection has been arranged, the next priority is protecting the building from any active water intrusion while waiting for permanent repairs. The following step explains when temporary repairs may be appropriate and why understanding the full extent of the damage is important before any work begins.
Step 4: Make temporary repairs if necessary
If the roof is actively leaking or water is entering the building, temporary repairs may help limit further damage until permanent repairs can be completed.
The priority at this stage is protecting the building, its contents, and daily operations. Depending on the situation, this may involve collecting water, protecting equipment and inventory, isolating affected areas, or arranging emergency roofing services.
However, it is important to understand that temporary repairs are exactly that: temporary. They are designed to reduce immediate risk, not solve the underlying problem.
One of the challenges with commercial roof hail damage is that the visible damage is not always the full extent of the problem. Hail can affect roofing membranes, seams, flashing, insulation, roof coatings, and drainage components in ways that may not be immediately obvious. Covering a visible leak without identifying the source of the damage can sometimes allow other problems to go unnoticed.
For this reason, temporary repairs should ideally be guided by a professional inspection whenever possible. A roofing contractor can help determine whether the leak is being caused by a small isolated issue or whether the hailstorm has affected a larger area of the roofing system.
The type of temporary repair will also depend on the roofing system. A metal roof, for example, may require a different approach than a TPO, EPDM, modified bitumen, or coated roofing system.
Understanding what hail can do to a commercial roof can make it easier to evaluate repair recommendations and inspection findings. So, later in this article, we explain the most common forms of commercial roof hail damage and how they can affect the long-term performance of the roofing system.
Step 5: Review repair, restoration, and replacement options
Once the roof has been inspected and any immediate water intrusion has been addressed, the next step is determining the most appropriate long-term solution.
Many property owners assume hail damage automatically means roof replacement. In reality, the right approach depends on several factors, including the extent of the damage, the type of roofing system, the age of the roof, and its condition before the storm.
In some cases, localized repairs may be enough to restore the roof’s performance. For example, isolated punctures, damaged flashing, loose seams, or minor impact damage can often be repaired without major work being required.
Other roofing systems may be good candidates for restoration. If the roof remains structurally sound but has sustained surface damage, restoration solutions such as reinforced roof coating systems may help extend the life of the roof while addressing storm-related issues. This approach can often reduce costs and minimise disruption compared to a full replacement project.
However, there are situations where replacement becomes the most practical option. Severe damage across large sections of the roofing system, extensive moisture infiltration, compromised insulation, structural concerns, or roofs that are already approaching the end of their service life may justify replacement.
A professional inspection is important because the extent of the visible damage doesn’t always reflect the true condition of the roofing system. Two roofs may appear similar after a hailstorm, yet require very different solutions once the underlying damage is evaluated.
Insurance and warranty considerations may also influence the repair strategy. Depending on the circumstances, documentation requirements, warranty conditions, and policy terms can affect how repairs are approached and which options are available.
Later in this article, we delve into how roofing professionals determine whether repair, restoration, or replacement is the most appropriate solution for a roof, to help you anticipate what you might find at the end of your own investigation.
What hail can do to a commercial roof
Understanding how hail affects commercial roofing systems can make it easier to evaluate inspection findings and repair recommendations. Some forms of damage are easy to spot, while others can remain hidden until leaks or other problems begin to appear.
The extent of the damage depends on several factors, including the size and density of the hail, wind speed during the storm, the type of roofing system, and the roof’s condition before the storm occurred.
As noted above, one of the reasons roof hail damage can be difficult to assess on commercial roofs is that not all damage creates an immediate leak. A roofing system may continue performing adequately for some time, even after sustaining impact damage, however, weakened materials often become more vulnerable to future weather events, temperature fluctuations, and normal wear.
Common forms of commercial roof hail damage include:
- Punctures in roofing membranes
- Bruising or compression damage beneath membrane surfaces
- Cracks in roofing materials
- Damaged seams and flashing
- Dents in metal roof panels
- Damage to roof coating systems
- Broken skylights or roof-mounted fixtures
- Damage to gutters, drains, and drainage components
- Exposed areas where water can penetrate the roofing system
For commercial properties in Pennsylvania, these issues can become particularly problematic as the seasons change. A small area of damage that develops during a summer hailstorm may later be exposed to heavy rain, autumn debris, snow accumulation, ice, and freeze-thaw cycles. Over time, what began as relatively minor storm damage can develop into leaks, insulation deterioration, mold growth, corrosion, or structural concerns.
Another challenge is that some forms of hail damage are largely cosmetic, while others affect the roof’s ability to protect the building. Distinguishing between the two requires experience and a thorough understanding of the roofing system involved.
This is one reason professional inspections are so important after a significant hail event. The goal is not simply to identify visible damage, but to determine whether the roofing system’s long-term performance has been compromised.
The type of damage can also vary considerably depending on the roofing system. A hailstorm may affect a standing seam metal roof very differently from a TPO, EPDM, modified bitumen, or coated roofing system.
In the next section, we’ll look at how hail damage differs across common commercial roof types and what inspectors typically look for when assessing each system.
How hail damage differs by roof type
Not all commercial roofs respond to hail in the same way. The size of the hailstone, the age of the roof, and the condition of the roofing materials all play a role, but the roofing system itself is often one of the biggest factors in determining the type and severity of the damage.
Understanding how hail affects different roofing systems can help you make sense of inspection findings and repair recommendations after a storm.
Metal roofs
Metal roofing systems are often highly durable, but they’re not immune to hail damage.
In many cases, hail causes dents in metal panels, flashing, gutters, vents, and rooftop equipment. Some dents may be largely cosmetic and have little impact on the roof’s ability to keep water out. However, more severe impacts can damage seams, loosen fasteners, compromise protective coatings, or create areas where corrosion may develop over time.
Standing seam metal roofs generally perform well during hailstorms, but each roof should be evaluated individually to determine whether the damage is cosmetic or functional.
TPO roofing systems
TPO (thermoplastic polyolefin) is one of the most common commercial roofing materials used on low-slope buildings.
When struck by hail, TPO membranes can develop punctures, tears, cracks, or areas of impact damage that may not be immediately visible. In some cases, the membrane surface appears intact while the underlying insulation or substrate has been affected.
Inspectors will typically pay close attention to seams, penetrations, flashing details, and areas where hail may have concentrated due to roof layout or drainage patterns.
EPDM roofing systems
EPDM roofing systems are known for their flexibility and durability, but hail can still cause damage under certain conditions.
Older EPDM roofs may be more vulnerable because years of weather exposure can reduce elasticity and increase the likelihood of cracking or splitting after impact. Hail can also puncture the membrane or damage seams and flashing components.
Because EPDM is a dark membrane, some forms of impact damage can be difficult to identify without a detailed inspection.
Modified bitumen roofing systems
Modified bitumen roofs often show hail damage differently from single-ply membranes.
The force of the hail can displace protective granules, create fractures in the roofing surface, or damage seams and flashing. In some cases, impact damage can expose underlying materials to ultraviolet radiation and weathering, accelerating deterioration even if leaks aren’t immediately present.
Inspectors will often look for granule loss, cracking, bruising, and soft spots that indicate hidden damage beneath the surface.
Coated roofing systems
Roof coating systems can provide an additional layer of protection against weather exposure, but hail can still damage the coating surface.
Depending on the severity of the impact, hail may crack, puncture, chip, or wear away sections of the coating. Damage may also occur around seams, penetrations, drains, and flashing details where movement and stress naturally occur.
The good news is that many coated roofing systems can often be repaired or restored without requiring full replacement, provided the underlying roof remains structurally sound. This is one reason roof restoration can be an attractive option for some commercial property owners after a hail event.
Regardless of the roofing system involved, the key objective of a post-storm inspection is determining whether the damage is cosmetic, functional, or likely to affect the roof’s long-term performance.
Once the roofing system has been evaluated, the next step is understanding how roofing professionals decide whether repair, restoration, or replacement is the most appropriate path forward.
Repair, restoration, or replacement: How contractors decide
We’ve found, one of the most common questions property owners ask after a hailstorm is whether the roof can be repaired or whether it needs to be replaced.
The answer depends on far more than the visible damage.
During a commercial roof inspection, good contractors will evaluate the condition of the entire roofing system, not just the areas where hail impacts are easiest to see. The goal is to determine whether the roof can continue performing reliably with repairs, whether restoration is a viable option, or whether replacement provides the best long-term value.
When repair may be enough
In many cases, commercial hail damage can be addressed with targeted repairs.
Repairs may be appropriate when the damage is limited to specific areas of the roof and the overall roofing system remains in good condition. Examples include isolated punctures, damaged flashing, minor seam issues, localised membrane damage, or small areas where a roof coating system has been compromised.
If the roof is relatively young and the damage has been identified quickly, repairs can often restore performance without the expense of a larger project.
When restoration may be the best option
Restoration is often overlooked, but it can be an effective solution when a roof has sustained moderate damage while remaining structurally sound.
Rather than removing and replacing the entire roofing system, restoration focuses on repairing damaged areas and extending the roof’s service life through a reinforced roof coating system or other restoration methods.
For some commercial properties, restoration can provide several benefits:
- Lower project costs compared to replacement
- Less disruption to building operations
- Extended roof service life
- Improved weather protection
- Potential energy-efficiency improvements depending on the system used
This approach is particularly attractive when hail has damaged portions of the roof but the underlying structure, insulation, and roofing assembly remain in good condition.
Because Lester’s Carpentry specialises in commercial roof restoration and roof coating systems, our team often helps property owners evaluate whether restoration may be a practical alternative to replacement. If you need help deciding whether to go down the restoration path, we’d be happy to chat through your situation and help you with everything you need to make an informed decision.
When replacement becomes necessary
There are situations where replacement is the most appropriate long-term solution.
A contractor may recommend replacement when hail damage is widespread, when moisture has infiltrated large areas of insulation, when structural components have been compromised, or when the roof was already nearing the end of its service life before the storm occurred.
Replacement may also be necessary when multiple roofing components have failed simultaneously, making ongoing repairs less cost-effective than installing a new roofing system.
While replacement is sometimes unavoidable, it should generally be based on the overall condition of the roof rather than the presence of hail damage alone.
Why two roofs can receive different recommendations
Property owners are sometimes surprised when two buildings exposed to the same storm receive different repair recommendations. This happens because every roofing system has its own history, age, maintenance record, construction details, and pre-existing condition. Even the location in a storm can change how your roof is impacted because storms just aren’t uniform
For example, a newer roof with isolated hail damage may only require repairs. A similar roof that already had ageing seams, moisture intrusion, or previous storm damage may require a more extensive solution because the weaker base may suffer more damage. This is why professional inspections are so important. A recommendation should be based on the condition of the roofing system as a whole, not simply the size of the hailstones that caused the damage.
Insurance and warranty considerations can also influence the decision-making process.
Insurance and warranty considerations
After a hailstorm, many commercial property owners naturally start thinking about insurance coverage and whether the damage may be covered under their policy.
While insurance and warranty questions are important, it’s usually best to begin with a professional roof inspection. Understanding the actual condition of your roofing system makes it much easier to evaluate available options and gather the documentation you might need later on.
Having said that, there are a few things you should do/know regardless of whether you think your roof may be covered by a warranty or insurance policy.
Document damage as early as possible
If you suspect hail damage, it’s a good idea to keep records of:
- The date of the storm
- Photographs of visible damage
- Interior signs of water intrusion
- Inspection reports
- Repair recommendations
- Any emergency repairs that were performed to protect the building
Good documentation creates a clearer record of the roof’s condition and can help you make informed decisions as the repair process moves forward.
Understand that coverage varies
Every insurance policy is different, so, don’t rely on what someone else says about their policy, even if they’re insured by the same provider as you.
Coverage can depend on factors such as the age of the roof, the type of damage, policy exclusions, maintenance history, and the specific terms of the policy. For this reason, you should review your policy carefully and speak directly with your insurer, broker, or claims representative if you have coverage questions.
Be aware, a roofing contractor can help identify and document storm-related damage, but only the insurance provider can determine what’s covered under the policy.
Don’t delay inspections or repairs
One mistake some property owners make is waiting until a claim decision has been made before taking any action.
If the roof is actively leaking or vulnerable to additional damage, you can and should take reasonable steps to protect the building. Delaying inspections or necessary repairs can sometimes allow damage to worsen, which may create additional complications later.
Prompt inspections also help establish a clearer connection between the storm event and any damage that is identified.
Consider warranty implications
In addition to insurance coverage, you might also want to consider how hail damage, and your response to a storm, may affect your existing roof warranties.
Depending on the roofing system, warranties may include requirements relating to inspections, maintenance, repair procedures, or approved repair materials. Some warranties may distinguish between damage caused by normal wear and tear and damage caused by severe weather events.
This is another reason professional inspections are valuable. Understanding the condition of the roof early can help you make decisions that align with both your warranty requirements and long-term roof performance goals.
Focus on the long-term condition of the roofing system
While insurance and warranty considerations are important, they shouldn’t be the only factors guiding repair decisions.
The primary goal should always be restoring the roofing system’s ability to protect the building reliably for years to come. In some situations, that may mean a simple repair. In others, restoration or replacement may provide the best long-term outcome.
Once the immediate storm damage has been addressed, the next step is reducing the risk of future hail and weather-related problems. A proactive maintenance strategy can often help identify vulnerabilities before the next major storm arrives.
How to reduce future hail and storm damage risk
No roofing system can be made completely hail-proof, but proactive maintenance can often reduce the likelihood of small issues becoming major problems after a storm.
For commercial property owners, the goal is not necessarily preventing every dent, puncture, or impact mark. Instead, you want to ensure the roofing system remains in the best possible condition so it can withstand severe weather and continue protecting the building when storms occur.
Schedule regular roof inspections
One of the most effective ways to reduce storm-related roofing problems is through routine inspections.
Many roofing issues develop gradually over time. Loose flashing, ageing sealants, deteriorating seams, drainage problems, and minor membrane damage may not seem significant on their own, but they can become weak points during severe weather.
Regular inspections help identify and address these vulnerabilities before a hailstorm has the opportunity to exploit them.
For many Pennsylvania commercial properties, inspections are most valuable in the spring and fall, as well as after significant weather events.
Keep drainage systems functioning properly
Effective drainage plays an important role in overall roof performance.
Blocked drains, clogged gutters, debris-filled scuppers, and areas of ponding water can increase stress on the roofing system and make it more difficult for the roof to recover after a storm.
Routine maintenance should include checking:
- Roof drains
- Gutters and downspouts
- Scuppers
- Drainage channels
- Areas prone to standing water
Good drainage helps reduce moisture-related problems and supports the long-term performance of the roofing system. So, don’t neglect it!
Address small repairs promptly
Many major roofing problems begin as relatively minor issues.
A loose flashing detail, small puncture, deteriorating seam, or damaged section of roof coating may not cause immediate concerns, but each can become a pathway for water intrusion during future storms.
Addressing these issues early is often far less expensive than dealing with widespread water damage, insulation replacement, or emergency repairs later.
Consider restoration before problems become severe
For some commercial roofs, restoration can be an effective way to improve weather resistance and extend service life before significant deterioration occurs.
Roof coating systems and restoration solutions can help reinforce ageing roofing systems, improve waterproofing performance, and address minor defects before they develop into larger problems.
This approach is often most successful when implemented proactively rather than after years of deferred maintenance.
Develop a long-term roof management plan
The commercial property owners who experience the fewest roofing surprises are often those who treat roof maintenance as an ongoing business decision rather than a reactive expense.
A simple roof management plan may include:
- Scheduled inspections
- Prompt repair of identified issues
- Maintenance documentation
- Storm-response procedures
- Long-term budgeting for repairs, restoration, or eventual replacement
Taking this approach can help extend roof life, reduce unexpected costs, and improve preparedness when severe weather strikes.
While hailstorms cannot be avoided, many of the most costly consequences can be minimised through regular inspections, timely maintenance, and informed decision-making.
Don’t wait for hail damage to become a roofing emergency
Hail damage is not always obvious, and some of the most serious roofing problems develop long after the storm itself has passed.
By checking for signs of leaks, documenting visible damage, arranging a professional inspection, and addressing issues promptly, commercial property owners can often prevent relatively minor storm damage from becoming a much larger and more expensive problem.
The most important thing to remember is that commercial roof hail damage is not always visible from the ground. What appears to be a few dents or minor impact marks could involve hidden membrane damage, compromised seams, damaged flashing, or moisture infiltration that may not reveal itself until the next major rain event.
Whether your roof ultimately requires repairs, restoration, or replacement, making informed decisions starts with understanding the true condition of the roofing system.
If your Pennsylvania commercial property has recently experienced hail or severe weather, Lester’s Carpentry can help. Our team provides professional commercial roof inspections, repairs, restoration services, and roof coating solutions designed to extend roof life and protect your investment. So, schedule a free commercial roof inspection or reach out to us to discuss your situation or request an obligation-free quote.
