Commercial Roofing
Production does not stop for a roof, so a plant manager asks one question before any other: which line is under the leak. A manufacturing company in Edinburg, TX may run a production floor, a warehouse bay, a maintenance shop and an office block under roofs of different ages, and each has a different consequence when water gets in. Water over a packaging line stops product. Water over a panel room stops everything. Water over a storage bay damages stock that may already be sold.
My first stop on a plant roof is the area around process exhaust, steam vents and rooftop units, because those details concentrate heat, moisture and chemical exposure on the membrane. From there I follow the leak back from the interior symptom and write a report that shows operations, maintenance and finance the same photographs.
Plants put loads on roofs that offices never do. Exhaust stacks discharge warm moist air, oils and fine particulates onto the surface nearby. Cooling towers and condensers drip water onto the membrane. Vents carrying steam or fumes can soften or stain materials. Foot traffic from maintenance crews wears a path from the hatch to each piece of equipment.
We look for ponding around exhaust outlets, softened or chalky membrane downwind of vents, residue that suggests chemical exposure, and punctures near equipment pads. Some membranes tolerate grease or fumes better than others, and the choice matters when a roof is replaced. A PVC roofing system is one option where oils and grease are present, and we match the membrane to the process exposure instead of using one default across the plant.
Water that passes a membrane moves through insulation and along the deck until it finds a low point or a joint. On a plant floor, it often appears at a light fixture, a conduit entry, a sprinkler head or the top of a column, and drips onto machinery that may be several bays away from the entry. A leak seen in one location may have traveled a long way.
We map the interior symptom, then follow the water to the nearest penetration, curb, wall tie-in or drain. Moisture readings or an infrared moisture survey show how far wet insulation extends, so the repair boundary follows evidence. A plant that knows where the wet area ends can schedule repair for a planned maintenance window instead of an unplanned shutdown.
We start at the roof access and map every piece of equipment before looking at the field. Then we walk to each process penetration in sequence, photograph the flashing and the membrane around it, and record anything dripping, staining or softened. Edges, drains and seams come next, followed by the transitions where an older section meets a newer one.
The written report separates findings by consequence. A drain problem over a dry storage bay is listed differently from a seam problem over an assembly line. Maintenance gets the repair items, operations gets the risk ranking, and finance gets the options with a cost range, all from one set of photographs. Where access over active equipment is limited, a drone pass fills the gap without anyone stepping near a process vent.
Plant roofs sit over heat-producing processes, and from May through October the Valley's own heat adds to that load, and the surface heat adds to the load from below. Seams and sealants take the cycle between a hot afternoon and a cooler night, and flashings around process penetrations flex with it.
Tropical weather is a June-through-October concern. Gusts of 50 to 70 mph from Hurricane Dolly left minor damage in the county, and Hanna hit Edinburg with wind and flooding in July 2020. Once a storm clears we check edge metal, rooftop equipment, flashings and drains, and we pay special attention to roof-mounted exhaust and intake hoods, which catch wind. A wind damage repair photo record also protects a plant's insurance position.
Yes, with a plan built from the production schedule. We divide the roof into sections that match plant zones, and we work over the least sensitive areas first. Each section is opened, replaced and dried in on the same day, and critical lines are protected with temporary covers or work is scheduled for planned shutdowns. The plant manager approves the sequence before the first section opens.
Where the roof is dry and worn, a roof coating restoration can skip tear-off and keep disruption short. Where it has failed, a recover over the existing roof may avoid removing a layer, provided the existing roof is dry and the structure can carry the weight. The photo record and moisture readings decide which path fits each section.
Cost moves with the area of roof, the layers to remove, wet insulation, the number of penetrations and equipment to be lifted, the height of the building and the days the plant can give. A plant with many exhaust stacks costs more per area than an open warehouse roof because every penetration needs flashing. The city's adopted 2018 building and energy codes apply to a replacement, and the scope is written with them in view.
Manufacturing, food processing, logistics and warehousing all appear in the local employment base, and the buildings that serve them vary widely. A plant near the US 281 and I-69C corridor or in another part of the Valley follows the same steps. Owners who run plants alongside distribution space may compare manufacturing plant roofing with cold storage roofing for food-processing buildings.
That is settled by what the process puts on the roof. Where oils or fats are present, a PVC membrane is a common choice because it resists them better than some alternatives. We ask what the exhaust carries, inspect the old membrane downwind of each vent and match the new system to what we see.
The plant's safety team sets the rules, and we follow them. We submit our crew list and work plan in advance, attend any required orientation, and use the fall protection and lockout steps the plant requires. Roof work near live equipment is planned with maintenance.
Sections are small enough to dry in the same day, and temporary covers protect equipment during the work. Where a line cannot be exposed, we schedule that section for a planned shutdown. The plant manager sees the sequence and approves it before tear-off begins.
A ranked list of roof areas, each with photographs, moisture findings and a recommended action. It supports a multi-year budget and shows why one roof moves ahead of another. A plant with its own shipping dock shares concerns with logistics and 3PL operators, and a plant leased from an investor can pass the same report to the owner. A report updated at each inspection keeps the history in one place.
Yes, and they should be. When a plant adds an exhaust fan or moves a unit, the curb and flashing should be installed with the roofer, not afterward. We coordinate with the mechanical contractor so the penetration is sealed correctly the first time and recorded on the roof plan.