 ##  [Interstitial Condensation](/interstitial-condensation) 

  ##  [Interstitial Condensation](https://engineering.quantumdictionary.io/interstitial-condensation-0) 

  

 [![Engineering & Applied Technologies Dictionary](/sites/default/files/styles/large/public/2026-01/Engineering%20%26%20Applied%20Technologies.png.webp?itok=_IKO7_-n)](/topic-specific-dictionaries/engineering-applied-technologies)



**Engineering &amp; Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

Liquid water that forms within the layers of an opaque building assembly when vapor transported into the assembly encounters a location where the material temperature falls below the local dew point, producing condensation inside cavities, material pores, or at interfaces rather than on exposed surfaces.