What Is Ponding Water Actually Doing to Your Roof Long-Term?
BERKELEY FLAT ROOF BLOG
What Is Ponding Water Actually Doing to Your Roof Long-Term?
It’s not just cosmetic — sustained ponding accelerates the roof’s aging process at that exact spot.
Standing water increases UV degradation at that location (through a magnifying effect), keeps the membrane perpetually saturated rather than drying between rains, and adds structural weight the roof may not have been designed to carry long-term. All three accelerate wear specifically where the water sits.
Fixing the underlying drainage or slope issue is a better long-term investment than repeatedly patching the eventual leak that ponding tends to cause.
Got a spot that always holds water?