Heavy rain. When a tropical system or a stalled storm sits over the area, rainfall totals climb fast, and the flat terrain between the lake and the bay drains slowly. A flat commercial roof has to move that water off quickly, and when drainage cannot keep up, ponding and leaks follow. Right on the water, the margin for error is thin.
Heat and UV. Long, intense Gulf Coast summers push membrane temperatures well above the air temperature for months on end. UV degrades the membrane, dries out asphalt-based systems, and stresses adhesives and seams. On the older roofs common in Clear Lake, heat is the steady force that has been aging them for decades, and it shows.



