What problems do flat roofs have here?
Water is the enemy of a flat roof, and Texas weather gives it plenty to work with. Heavy downpours can overwhelm drains. Standing water, called ponding, speeds up wear on membranes. Heat expands and contracts materials every day, which opens seams and cracks flashing over time.
Tree cover matters on commercial sites as well. Needles, leaves and seed pods clog scuppers and drains, especially near wooded edges of parking lots and office campuses. HVAC units add a different risk, because service crews walk the roof, set tools down and sometimes leave penetrations poorly sealed.
Look for stains on ceiling tiles, water at the base of walls, bubbling or blisters on the membrane, and debris-filled drains. Small problems caught early often mean a repair rather than a replacement. If the damage followed a storm, see storm and hail damage repair.

