##  [Roof Ponding](/roof-ponding) 

  ##  [Roof Ponding](https://engineering.quantumdictionary.io/roof-ponding-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

Persistent accumulation of water on a low‑slope or flat roof surface that remains after a period in which functional drainage would be expected, producing prolonged wetting that accelerates membrane deterioration, increases live load and deflection, and promotes leak risk.