High winds are one of the most common causes of roof wind damage on commercial buildings during summer storms. Wind moving across a flat roof creates uplift pressure, and that pressure concentrates hardest at the edges, corners, and any spot where flashing or fasteners have started to loosen. On membrane systems like EPDM, a section that lifts even slightly can let wind get underneath the sheet and tear it further with each gust that follows. Rooftop equipment is not immune either. HVAC curbs, vent stacks, and loose panels can shift or separate from their seals, opening a path for water to reach the deck below.
The way a roof is installed affects how much wind uplift it can handle. Mechanically fastened membranes rely on rows of screws and plates, and a storm that loosens even a few of those fasteners creates a weak point the next storm can exploit. Fully adhered systems resist uplift differently, through adhesive bonding across the full surface, but they are not immune to damage at parapet walls, coping, and other edge details where wind pressure is strongest. Either way, the perimeter of the roof is almost always where wind-related roof storm damage starts.
Roof hail damage tends to be less obvious than wind damage because the marks it leaves behind can be small. Hailstones bruise membrane surfaces, crack brittle coatings, and dent metal flashing and rooftop units. On older or thinner membranes, repeated hail impact can eventually puncture the surface and let water track underneath before anyone notices from the ground. Some of this damage is cosmetic and some is functional, and telling the difference usually requires a closer look than a quick visual scan. This is where a well-maintained coating system matters. As a VERSICO-certified installer and Armour Proof Coatings-certified applicator, Apex applies roof coatings designed to add a flexible, protective layer over existing membrane, which can help a roof better withstand impact from hail and wind-driven debris.
Storm damage is not always visible from the ground, and small punctures or lifted seams can turn into significant leaks within days of a storm passing through. Apex Commercial Roofing provides professional roof inspections across New Jersey and Pennsylvania to catch wind, hail, and water damage before it spreads. Our team documents every finding so you have a clear picture of your roof’s condition and a straightforward plan for repairs.
Flat commercial roofs are especially vulnerable to flat roof storm damage caused by heavy summer rain. When drains, scuppers, or gutters cannot keep up with the volume of a fast-moving storm, water pools instead of draining off. Ponding water that sits for more than 48 hours adds weight to the roof deck and puts steady pressure on seams and membrane surfaces already weakened by wind or hail. Not every roof system handles ponding the same way. Different roof systems drain more efficiently than others depending on slope, membrane type, and how well the drains were installed, which is one more reason storm-driven ponding is worth a professional look rather than a guess from the ground.
A few signs tend to show up after heavy rain has pushed a drainage system past its limit:
Any one of these on its own is worth a call. Together, they usually point to a roof that took on more water than its drainage system was built to handle.
Wind-driven debris adds another layer of risk during summer storms. Branches, loose signage, and gravel from ballasted roof systems can scratch, gouge, or puncture a membrane on impact. Even the stone used to weigh down some ballasted systems can become a hazard once wind picks it up. A single puncture might seem minor, but it gives water a direct path into the insulation and deck, and that damage tends to spread with every storm that follows. This is why storm damage rarely improves on its own. A small tear left unaddressed after one storm becomes a larger repair after the next, and repeated exposure compounds costs that a single timely fix would have avoided. If a storm has caused visible damage or an active leak, emergency response service can stabilize the roof and prevent water from reaching the building interior until permanent repairs are scheduled.
Apex Commercial Roofing has spent more than 40 years helping New Jersey and Pennsylvania property owners recover from severe weather, and a fast, thorough response after a storm is one of the best ways to limit how much roof storm damage actually costs you. Waiting for a leak to confirm the damage almost always means paying for a bigger repair than the one you started with. If your building has been through a summer storm, contact Apex Commercial Roofing to schedule a professional roof repair assessment and get a clear plan for getting your roof back to full strength.
https://www.apexcommercialroofing.net/wp-content/uploads/2026/06/Aerial-View-of-Industrial-Park-Warehouses-and-Logistics-Facilities.jpg 1250 2000 Abstrakt Marketing /wp-content/uploads/2025/05/Apex-LOGO-Side-By-Side-Grey-Black.png Abstrakt Marketing2026-06-08 15:06:572026-06-08 15:07:03Commercial Roof Maintenance Checklist: A Year-Round Guide for Property Managers