Replies

1. 
   MattMillham | Nov 21, 2019 05:10pm | #1

   It's a bit unclear what your assembly is or what you're worried about rotting. Some more details would be helpful.

1. 
   user-7582978 | Nov 21, 2019 06:26pm | #2

   I have a moisture barrier covering my cinderblock wall, in the basement.. I want to apply rigid foam insulation against it. Meaning, The moisture barrier will be in be in between the cinderblock wall and the rigid foam..Will mold eventually grow anywhere??

1. 
   MattMillham | Nov 21, 2019 06:37pm | #3

   Mold requires organic material (food), water, and the right temperature to grow. Unless your moisture barrier is organic, there’s nothing for mold to eat. What’s your barrier?

1. 
   Deleted | Nov 21, 2019 06:41pm | #4

   “[Deleted]”

1. 
   user-7582978 | Nov 21, 2019 06:42pm | #5

   thats the thing!! im not sure what They used.. Its white and plastic like..

2. 
   user-7582978 | Nov 21, 2019 06:43pm | #6

   Wouldn't mold grow on the cinderblock?? and will it help if i took a picture of it??

1. 
   MattMillham | Nov 21, 2019 06:49pm | #7

   A picture would be helpful.

2. 
   user-7582978 | Nov 21, 2019 07:06pm | #8

   ok

   
1. 
   user-7582978 | Nov 21, 2019 07:07pm | #9

   So, will it be ok if i put a foam board insulation against that?

3. 
   sawdust_steve | Nov 22, 2019 08:31am | #10

   Foam board is vapor permeable so it will slow down vapor transmission and allow a wall assembly to dry out. Almost every wall assembly I've seen does NOT call for a vapor barrier but it does depend on where you are located and what your climate is.

   My recommendation is to go on over to https://www.greenbuildingadvisor.com/qa and search the forums there is a ton of information there and some very knowledgeable building science folk who can better address your questions.