Replies

1. 
   sapwood | Oct 10, 2013 12:53pm | #1

   Where is the insulation installed? Is it on the underside of the roof or on the topside of the ceiling? And, where do you live? Are you in a heating or cooling climate?

1. 
   mcgaritya | Oct 14, 2013 10:31am | #3

   attic spray foam insulation

   The insulation was sprayed on the celing, walls, and windows of the attic. I live in climate zone 5 with hot summers and cold winters.

2. 
   AndyEngel | Oct 11, 2013 10:18am | #2

   Do you have a damp foundation? A wood shingle roof? Absent these issues, odds are, you'll be fine.

1. 
   mcgaritya | Oct 14, 2013 10:33am | #4

   spray foam insulation

   The crawl space has a dirt foundation. A vapor barrier was placed and then the foam was sprayed. I do not have a shingle roof.

1. 
   AndyEngel | Oct 29, 2013 01:58pm | #8

   In your other thread, you mentioned that it's open cell foam. That changes my eariler comments. Open cell foam could be a problem in the attic as it might allow moisture vapor to reach the cold underside of the roof sheathing where the moisture can condense. I'd be considering an air barrier on the underside of the roof.  

   Edited to change "closed" to "open" in the third sentence.

1. 
   DanH | Oct 15, 2013 07:57pm | #5

   I think you just contradicted yourself.

1. 
   AndyEngel | Oct 28, 2013 03:12pm | #6

   How did I contradict myself? I corrected myself when I found out the foam was open cell.

2. 
   DanH | Oct 28, 2013 06:02pm | #7

   How does closed-cell foam allow moisture to reach the cold underside of the roof?

3. 
   AndyEngel | Oct 29, 2013 01:58pm | #9

   Thank you. Fixed that.

2. 
   Piffin | Nov 08, 2013 10:30am | #10

   I hear oo many stories of open celled foam acting like a sponge to such up and store vapors as water and lead to rot. There are way too many variables in each house, climate, and lifestyle to be able to give a single right generic answer to this Q