Hail is the other big-ticket threat. Severe spring storms roll across the Houston region with hail that can bruise membranes, crack aging built-up surfaces, and damage rooftop units and metal panels. A lot of the roof claims we see in Pasadena trace back to a single hard hailstorm followed by months of slow leaks that nobody connected to the original event.
And it rains hard here. When a Gulf system stalls over southeast Harris County, the rainfall totals get extreme, and that water has to get off the roof fast. Pasadena's flat industrial roofs live or die on drainage. Ponding water adds dead load, degrades the membrane, and finds every weak seam. With Harris County's flat terrain and the drainage pressure that comes with heavy storms, we treat roof drains, scuppers, and overflow paths as core to the job rather than a detail to check at the end.
How we approach drainage on a Pasadena roof