Tomball sits at the far northwest edge of the metro, far enough from the coast that owners sometimes assume hurricanes are someone else's problem. They are not. Tropical systems push inland and the open exposure along the SH-249 corridor means wind gets a clean run at the parapets and edges of the big new flat roofs. Wind uplift is the failure mode we see most on those buildings, because once a corner or perimeter detail lifts on a roof that large, the membrane peels inward fast and the next storm finishes the job. Edge metal, fastening patterns, and termination bars get our attention before anything else.
Hail is the second threat, and Tomball's position on the northwest side puts it right in the path of the hard cells that come off the prairie during spring storm season. A single cell can bruise a membrane across an entire shopping center or warehouse in twenty minutes, and the damage rarely shows from the parking lot. We find it as fractured granules on mod-bit, split seams on aged TPO, and crushed insulation under field punctures that surface as slow leaks weeks later. After a storm we walk the roof, mark every impact, and document it with dates so an owner has a real record before filing.
Heat and rain do the rest. The summer sun grinds on every flat roof here for months, cooking plasticizers out of the membrane and opening seams that were watertight in spring. And Gulf storms drop heavy rain faster than the flat drainage typical of this part of Harris County can always carry it off. On a low-slope roof, standing water is the quiet accelerator behind most of the roofs we end up replacing, so drainage stays near the top of every inspection we run out here.