Commercial Roofing
Wet insulation is the quiet cost in a flat roof. The membrane can look intact, the ceiling can be dry for months and the board underneath can still be holding water that adds weight, kills thermal value and feeds a slow rot in the deck. On the FM 491 and Base Line Road corridor near La Villa, TX, a roof that has taken a few years of heat and one or two tropical rains deserves a moisture reading before anyone prices a recover.
La Villa lies about 14.1 straight-line miles from Edinburg, which keeps the corridor inside our local 25-mile radius. We trace the water path from any stain, take readings from several points across the roof, read the layers under the membrane and then put phased restoration and replacement side by side. The facility director gets both prices, both schedules and both service horizons on one page, with the photographs that support each.
Three tools work together. An infrared scan, taken when the roof is releasing the day's stored heat, shows cooler or warmer patches where insulation holds water. A capacitance moisture meter confirms those patches by reading board and deck at a grid of points. Core cuts at the worst spots show the layers and let us see, smell and weigh what is there, and each cut is photographed beside a ruler so thickness can be read from the picture.
The three together make a map, and the map sets the repair boundary. Where water is local, the repair removes the wet board, replaces it with matching insulation and rejoins the membrane with a proper lap that is probed and photographed. Where the map shows wide patches, the question becomes whether to restore in sections or replace the roof. Our infrared moisture survey produces that map with photographs and a table of readings. The scan is timed for the hours after sun when the roof is cooling, because that is when wet insulation shows most clearly, and readings are repeated at marked points so a second reviewer can reproduce them.
Phased restoration fits a roof whose problems are confined to certain zones and whose remaining surface is sound. Each phase removes and replaces the wet sections, repairs the flashings and drains around them and leaves dry areas in place. The cost is spread across budget periods, and the building stays in service. The risk is that each phase has its own seams where new membrane meets old, so the phasing plan includes the tie-in details, with photographs of each, and a check of the earlier phase at every later visit.
Replacement fits a roof where wet areas are widespread, where the deck is compromised or where the membrane has aged out across the field. We price both on the same page with the same level of detail. If the owner needs a lower first cost, phased work may be the better start. If the owner wants one finished roof with one service horizon, commercial roof replacement may serve better. Replacement also resets the drainage plane for the whole building: tapered insulation can be added so the new roof sheds water to the drains, which restoration of scattered wet zones cannot do.
Each bay of an occupied building has its own use, its own hours and its own sensitivity to noise, dust and water. We identify the bays under each roof zone and plan the order accordingly: the most sensitive bay gets the last disturbance and the first protection, and the bay that tolerates work gets the early phase. We ask which bays hold stock, records, food, medical supplies or sensitive equipment, and which can be vacated for a day, because that answer shapes both the order and the protection.
Protection goes in before tear-off: poly over stock and equipment, ceilings opened only where needed and walkways marked. Occupied building reroofing uses a named site contact, posted hours and a daily closeout where every opened section is dried in. If a bay must be left in service at night, the roof above it is closed first, and the log shows the time it was completed.
TxDOT lists a four-lane divided widening of FM 491, also called Base Line, from SH 107 to FM 1925, with La Villa named as the project locality, and separately lists widening of the FM 491 segment from US 83 to Mile 10 North Road as a Mercedes project. Those are listed projects, so we look at the site itself to see which sections are under construction and which are open.
Road work shifts driveways and turning movements. We adjust the lift position, the dumpster location and the delivery route, and record each change in the job notes so the facility director can see how access was handled. A widened road may also change where water leaves the site, so we look at how the downspouts discharge and whether the ground slopes toward the building.
May through October is the Valley's heat-safety season in the Weather Service's calendar, and Hurricane Hanna's wind and flood record in Hidalgo County adds a tropical risk on top of it. For a roof with wet insulation, that means two pressures. Heat expands the trapped water into vapor that pushes on the membrane and lifts it from the board, forming blisters. Rain adds more to the wet zones.
We schedule the dry-in of wet zones early and keep temporary covers ready. After tropical events, the same walk applies as at the first inspection, with extra attention to ponding water at low spots, because ponds feed the wet zones. A pond that remains a day after rain gets a depth reading and a note on which outlet should clear it.
The moisture map, the core-cut photographs and readings, the phased and replacement scopes with cost drivers, and the order of work by bay. Owners with buildings in La Villa or Mercedes can compare roofs on the same format, which makes it plain which roof has the widest wet area and which can wait. The same record helps a lender or buyer see what has been done and what remains.
Yes. Water can sit in board for months before it reaches a ceiling. A scan and a few core cuts find it, and finding it early keeps the repair boundary small.
The cut is filled with matching insulation and covered with a membrane patch lapped onto sound material and sealed at the edges. It is logged on the plan so no one mistakes it for a defect.
The size of the wet area, the deck condition and the age of the surface. The owner's budget cycle also counts. Both options get the same detail so they can be compared fairly, and the written scope names the tear-off boundary and the dry-in date for each phase.
Often, with protection and phasing. We identify sensitive bays, protect them first and schedule noisy work around their hours.
They change access and deliveries, not the roof evidence. We confirm conditions and adjust staging.