2" EXP Foam, Does it soak up water

[HetrickElectric]

I started to put the foam on the inside of my foundation today and got thinking if or not the foam will soak up moisture. If it does I was going to put plastic on each side of it. I never noticed anyone worry about it before. It doesn't say that it is an approved moisture barrier so that makes me think that it may soak up water over time?


Please help...

 

[tcianci]

If it is the same foam that is commonly used for the application, I wouldn't worry about it. The only instance I have personally seen of foam becoming water logged was polyisocyanurate on a very old rubber roof, but this stuff was basically submerged. If the foam you are using is a closed cell type of foam, you shouldn't have problems. Lets hear from other guys with experience on this. Please also let us know the brand of foam you are using.

 

[Daniel Dudley]

Closed cell is OK, Open cell is not. Call the manufacturer or visit the web site.