Row after row of identical roll-up doors makes a self-storage facility easy to read from the ground and hard to read from above, because every long roof shares the same panels, the same fasteners and the same eaves. A single backed-out screw is a small defect, and the same screw repeated along hundreds of feet of panel is a pattern. We start a storage roof assessment by walking each building along its length, checking fastener heads, panel laps, ridge and eave closures and gutters, then recording which rows show the same wear. Each day's heat moves the metal panels, and Cary, NC reaches 90°F on 32.9 days of a typical year, which loosens fasteners and sealant slowly and quietly.
On an exposed-fastener metal roof, each screw passes through the panel into the purlin with a washer that seals the hole. Thermal movement works the screw, the washer ages and cracks in sunlight, and the hole enlarges. Water then enters at the screw and runs along the purlin to a unit below. We inspect a sample of fasteners along each row, replace those that have lost their seal and check the panel laps and closures for gaps.
When a panel is dented, scratched through its coating or rusted at an edge, we note it on the plan with a photograph. A standing seam metal roof hides its fasteners under the seams and moves with temperature on clips, which is why it is sometimes chosen when an exposed-fastener roof has reached the end of its repairs.
Eave gutters and downspouts get the same walk. A gutter pulled away from the fascia, a joint that has opened or a downspout that discharges beside a slab edge sends water where it should not go. We reset or replace those parts as part of the row's scope.
A leak in a storage unit wets stored goods, and the owner then faces a claim, a refund or a dispute that has nothing to do with roofing. Documentation helps both sides. We record each reported unit, the building and row, the date and the weather, then match those reports to roof locations. That map often shows several units under one lap, one gutter or one failed closure.
Cary's 48.80 inches of annual precipitation puts regular stress on each panel joint. Where condensation rather than a leak is the problem, we look at ventilation, insulation and the underside of the panels, because moisture from humid air can drip like a leak. Leak repair work starts after that distinction is made, so the right fix goes in the right place.
A metal retrofit installs new panels or a new system over the existing roof, which avoids tear-off above stored goods. The sequence begins with fastener and purlin checks, repairs to the existing roof where needed, installation of framing or subpurlins if the design calls for them, then the new panels and closures. The open area is kept small, and units below are protected with plastic if a panel is lifted.
Staging fits the drive aisles. Trucks and lifts must leave tenant access clear, so work is done in sections, one drive aisle at a time, with tenants kept informed by the manager. The metal roof retrofit process keeps the old roof as a dry layer until the new one is closed, so the units stay protected throughout.
Over a drive-through canopy or a loading bay, the work is sequenced differently, since those roofs often shed water over a lane customers use. We install gutters or diverters at the same stage as the panels so no sheet of water falls across the traffic path in the first rain.
A storage facility is open to customers who move in and out on their own schedule. Roofing crews need parking, a staging area and a lift path that does not block gates, fire lanes or loading areas. We walk the site with the manager, mark the no-go zones and put up cones and barriers at each work area.
Cary's flex-industrial areas, such as Park Overlook with its completed flex-industrial buildings and Woodlake Industrial Center with its seven industrial buildings, group several buildings in one area, and a multi-building storage site needs the same coordination between rows. Material trucks arrive along US 1, US 64 or I-40. The occupied-building process includes a daily plan for gate hours and tenant notice.
If a metal roof still has sound panels, a coating can seal fasteners, laps and minor corrosion, and reduce solar heat. A coating needs a clean, dry, properly prepared surface, and rusted panels may need repair or replacement first. Coating restoration works best when readings show the panels are structurally sound.
For multi-story climate-controlled buildings, the roof is often a low-slope membrane over a deck, and the choices include repair, recover or replacement based on moisture readings. We compare the condition, the history and the likely years of service, and the proposal states what drives cost, such as access, panel length, number of closures and the condition of the purlins. Permit rules are confirmed per project.
Where a coating is chosen, the proposal says which fasteners will be replaced first and which panels will be repaired, and the inspection after cure confirms that laps and closures are sealed.
The manager files a plan of each building and row, with photographs of fasteners, laps, gutters and closures, the repairs made, the materials used and the rows still on watch. When a tenant reports water, the manager can see if that row has a known repair.
Owners with sites near Park Overlook or Woodlake Industrial Center can use the same record at each property. It also fits a flex-industrial building or a warehouse.
A short list of rows to recheck after the next heavy rain is added, with the reason for each, so the first season after the work produces evidence instead of guesses.
Fastener replacement, closure repair, sealed laps and panel patches can restore a row when the panels are sound. We check a sample along the whole length before saying the problem is limited. If a sample shows widespread backout or corrosion, we say so and show the photographs, so the owner can weigh restoration against a retrofit.
A leak turns up after rain and traces to a defect in the roof. Condensation tracks humidity and temperature swings and gathers on cold metal. We compare the timing of reports with weather and look at the underside of the panels.
Hail, tornado and damaging-wind events fill the Raleigh National Weather Service record for a 31-county region between 1950 and 2005. It is regional context, and it supports checks of panel dents, loose ridge caps and gutter attachment after a storm.
The old roof stays in place as a dry layer until the new one is closed, so units remain protected. Lifted areas are covered, and we work in sections.
We record the building, row, fastener count, closures replaced, and any panel work, with photographs. The owner can compare it against future tenant reports. Rows with repeated work are flagged for a recheck after the next heavy rain.
Arrange a roof walk with Commercial Roofing Cary. We will check fasteners, laps and gutters along each building and send a scoped plan the manager can use.
Roof leaking now? Call for emergency roof repair.
Or email [email protected].
