Storm Damage Response That Keeps Your Building Operating

The Charlotte region gets its roof damage from a handful of recurring weather patterns. Spring and summer thunderstorms bring hail and straight-line winds that arrive with little warning. Heavy rain events overwhelm roof drains clogged with pollen or leaves and turn a low-slope roof into a shallow pond. In late summer and fall, the remnants of tropical systems can deliver hours of sustained wind and rain that find every weak flashing on a roof.

Each of those produces a different damage signature, and recognizing it quickly shapes the response. Hail damage is often invisible from the ground and shows up weeks later as leaks. Wind damage is dramatic and progressive, getting worse with every gust until the loose edge is secured. Rain-overload damage looks like a leak but is often a drainage failure that will repeat in the next storm unless it is corrected.

An emergency call on an occupied building starts with safety and triage. We find out what is happening inside, whether water is near electrical equipment, elevators, or server rooms, whether ceilings are sagging, and where containment is already in place. Then we get on the roof, locate the source, and stop or divert the water with the fastest reliable method for that roof type. Loose edge metal and lifted membrane are secured so the damage stops spreading, and clogged drains are cleared so water has somewhere to go.

Communication is part of the emergency work. Facility managers and property managers need to tell tenants, owners, and insurers what is happening, so we provide a same-day summary of what we found, what we did, and what still needs to happen, with photos.

Tarping a pitched residential roof is straightforward. A low-slope commercial roof with rooftop units, parapets, and internal drains is not, because water does not run off a tarp lying flat; it collects on top and finds the edges. Temporary dry-in on a commercial roof uses methods matched to the membrane: compatible patches on single-ply, modified bitumen patches on asphalt-based roofs, emergency sealants at flashings, and ballasted tarps or shrink wrap only where a large open area must be covered quickly.

The goal of a temporary dry-in is to keep the building dry until the permanent repair can be designed, approved, and scheduled, which on a commercial building may take weeks. We build temporary measures to last that long, and we inspect them after each subsequent rain rather than assuming they held.

Hail damage on a commercial roof depends on what the membrane is sitting on. A single-ply sheet over a hard cover board can fracture or bruise at each impact, while the same sheet over soft insulation may show crushed insulation and dimpling without immediate membrane failure. Modified bitumen and built-up roofs lose granules and can show fractured plies where impacts were severe. Metal roofs dent, and the coating on the panel can crack at the dent, which matters more for long-term corrosion than for immediate leaks.

Rooftop equipment often takes more obvious damage than the roof. Condenser coil fins crush, exhaust hoods dent, skylights and smoke vents crack, and plastic vent caps shatter, all of which we photograph and note for the HVAC contractor and the adjuster. Because hail damage on a membrane can be subtle, we inspect with test squares, mark each impact, and count and photograph them per square so the extent is documented rather than estimated.

Wind damage on a low-slope roof almost always starts at the perimeter and corners, where uplift pressures are highest. A fascia or coping cap that was never fully engaged in its cleat lifts, the membrane behind it billows, and with each gust the failure peels inward. Mechanically fastened membranes can flutter and fatigue at the fastener rows. Adhered systems fail when the adhesive or the insulation attachment below them was inadequate. Ballasted roofs can have stone scoured away, leaving membrane exposed.

Our wind response re-secures the edge first, since that is where the failure began and where the next storm will attack. Permanent repair looks at why the edge failed: whether the edge metal was properly cleated and fastened, whether the perimeter attachment the design called for was actually installed, and whether it matches the building's height and exposure.

Every storm response generates a documentation package: date-stamped photos keyed to a roof plan, test square results for hail, core cuts or moisture scans where water intrusion is suspected, a description of temporary measures taken, and a proposed scope for permanent repair. We meet your insurance adjuster or independent roof consultant on the roof, walk the damage with them, and answer technical questions about the roof's construction and the storm's effects. We do not decide what a policy covers, and we do not promise any outcome; our role is to make sure the damage is accurately observed and the repair scope is technically sound.

Permanent repairs on an occupied commercial building are usually phased. The emergency dry-in buys time, the scope is finalized once the adjuster and owner have what they need, and the permanent work is then sequenced by roof section, tenant schedule, and weather window. Where HVAC units were also damaged, we coordinate with the mechanical contractor so curbs are reflashed once rather than twice.