Commercial Roof Drainage and Ponding Repair
When a Houston roof still holds water after nearby surfaces dry, the first decision is whether clearing the outlet will resolve it. We help property teams distinguish a blockage from a low spot or a drain assembly leak before choosing corrective work.
Check the main outlet and the backup path
A parapet can keep runoff on the roof if the primary drain cannot pass it. On an enclosed Midtown commercial roof, record which outlets discharge during rain and whether an overflow starts running. Houston's building code addresses secondary overflow where perimeter construction can trap water if primary drains back up.
Look for the visible water line, debris and the relationship between the low area and the outlet. Share photographs taken from a safe position with the time since rain ended. A second photo after surrounding surfaces dry helps establish which water remains.
Distinguish surface drainage from a leak at the drain
A clear drain can still leak at the connection to the roof membrane or below the deck. Conversely, a wet spot near a drain may be runoff collecting upstream of a curb or higher repair. Review the route through the roof and the interior before assigning work.
Determine whether the correction requires clearing the outlet, repairing its attachment, restoring a drainage path or involving a plumbing or structural specialist. Keep people off any roof area with deep water or suspected deformation until qualified staff have assessed it.
Confirm the correction and keep the outlet accessible
Use photos or observations after a suitable later storm to see whether the repaired area drains as expected. Document any remaining low areas so the facilities team can spot changes early instead of rediscovering them during another leak.
Add primary and overflow outlets to the maintenance map, including roof levels that are difficult to reach. Mark places where nearby rooftop work could restrict flow again.
Houston market coverage
We address Houston roof drainage problems across low-slope industrial, office and retail buildings with internal drains, scuppers or exterior runoff systems.
