PVC roof installation, repair and replacement for McKinney, TX commercial buildings, including grease-exposed roofs, weld testing and phased access planning.
Tell us about the building and what you are seeing. We reply with the next practical step.
Grease on a roof surface is a work constraint before it is a membrane question. Where a kitchen exhaust fan discharges onto a rooftop, the sheet beneath it absorbs oil every day, and the first check on that roof is whether the membrane still welds and still stays flexible there. PVC is the single-ply system that most often answers that problem, and the way it is installed and repaired decides how long the answer holds.
We install, repair and replace polyvinyl chloride roofs on commercial buildings in McKinney, TX, from restaurants and retail buildings to office and industrial parks. Tell us where water showed up, when the building runs and where a crew can reach the roof, and the inspection will be planned around that workday.
PVC roofing is a thermoplastic single-ply sheet, usually reinforced with polyester, that is flexible and generally resistant to grease, many chemicals and fire spread. Seams are fused with hot air, which turns two sheets into one continuous layer. The flexibility comes from plasticizers in the sheet, and over many years some plasticizer can migrate out, which makes the surface stiffer and more likely to crack under movement.
PVC is attached in the same ways as other single-plies: mechanically fastened, fully adhered or ballasted. It does not tolerate direct contact with some other materials. Asphalt products and certain foam insulations can attack it, so a separator or cover board often goes between the sheet and an old bituminous roof or a polystyrene layer. We check what lies under any new PVC before we order.
A restaurant or food-service roof sees fats, oils and cleaning chemicals around its vents. Some membranes soften and swell where grease collects, while PVC is typically chosen because it holds up better. That does not make grease harmless. A heavy film still holds dirt and heat, and a sheet that stays coated can be hard to weld during repairs. We clean the area before any patch, test a small weld on cleaned membrane and plan grease containment pans and walk pads at the discharge point.
Other exposures matter too. Air handlers that drip condensate, rooftop process exhaust and cleaning-product runoff all leave marks. We map each source, check the sheet below it and decide whether the answer is a pad, a containment tray or a relocated discharge. The record names which unit leaves which stain, so the repair does not repeat a failure that is still being caused.
July and August afternoons average about 95.6°F and 95.8°F in the Dallas-Fort Worth normals, and a dark or hot surface softens PVC enough to scuff under a boot. Welding in that heat is possible but it narrows the working day, so crews start early and take the heaviest welding before the surface warms. Those are regional normals and not a reading from one McKinney roof.
The same normals record 37.01 inches of precipitation in a year and 4.78 inches in May, and spring brings the Metroplex its worst severe weather, per the Weather Service: hail, damaging wind, flooding and tornadoes. We schedule wet-season tear-off in short sections, check drains before cutting and keep temporary protection staged. After a storm, we inspect PVC for punctures, displaced flashing and seam lift, and we test the insulation under any impact. A regional storm does not prove damage at a given building, so the inspection decides the repair.
Seam failures usually trace to contaminated surfaces or poor weld settings, and they show as open laps or fish-mouths. Flashing failures show at curbs, pipes and walls where the sheet is formed around an obstacle. Age shows as stiffness and cracking at the surface, mostly around fasteners and at folds. Ponding that stays for days speeds up wear, so a ponding water problem is addressed with the roof, not afterward.
We probe every accessible seam, press on the membrane near edges and penetrations, and check the insulation below with an infrared moisture survey when the evidence suggests water has traveled. If the sheet is flexible, the welds are sound and the insulation is dry, the roof is a repair candidate. If the sheet is brittle across large areas, the report puts a recover or replacement next to it.
US 75, SH 121 and US 380 are the principal routes McKinney lists, and it counts eight retail development districts, and retail and food-service buildings in areas like the 121 District and Historic Downtown McKinney keep fixed hours and loading windows. A PVC project over an active kitchen needs air-intake protection, a defined lift location and a plan for hot-work limits. We coordinate with the facility director on when exhaust can be shut down briefly, where debris leaves and which entrance stays open. Roof access and truck routes have to be confirmed at the property, since the city's materials describe highway context and not any single site.
Where the roof meets existing bitumen or foam, the cover board and insulation choice is part of the scope. It sets the separation layer, the wind attachment and the fire rating the assembly needs.
A contained repair fits a roof with local seam or flashing defects, flexible sheet and dry insulation. We clean, weld a patch or a new boot with a probed edge, and mark the location in the record. That kind of commercial roof repair keeps the production window open and leaves the rest of the roof alone.
When the sheet has lost flexibility or the old assembly will not take a new layer, the decision shifts. A roof recover adds a new PVC sheet over a sound, dry substrate with a separator, which shortens tear-off and keeps the building in use. A full tear-off is the answer when insulation is wet across a large area or the deck is damaged. In every case the tear-off limit is drawn on test evidence, with cores and moisture scans marking the wet edge, and the permit review applies the city's adopted codes with their local amendments, so insulation and reflectance items are priced before the work starts.
The closeout record lists work zones, seam probe results, the substrate found under each section plus manufacturer data for the sheet and its flashings. A preventive roof maintenance plan then schedules grease cleaning and pad checks, and owners deciding between systems can compare PVC with KEE roofing, a related alloy sheet that is also built for chemical exposure, or with TPO roofing, which welds the same way but resists grease less.
Share the leak location, operating hours, exhaust locations and access limits. We will inspect the sheet, the welds and the substrate and sequence the work around the building's workday.
Short answers to what owners and facility managers ask before a roof visit.
Often, because it resists grease better than many sheets. The decision still depends on the insulation below, the discharge points and whether the roof has other traffic or heat sources.
Yes, after cleaning. We test a small weld first. If the surface will not weld after cleaning, the repair moves to a larger section of new sheet.
In many cases it does. Asphalt products and some foam insulations can attack the sheet, so a cover board or separator sits between them.
Longer than a coating can be applied, but the working day shortens. Early starts and shade breaks keep welds consistent and the crew safe.
Send the leak location, the operating hours, the vent and exhaust locations and any access limits. Those details let the inspection start at the right roof zone.
Send a question about the building and we will reply. Or call 555-555-5555.
