Insulation w/ vapor barrier installed upside down

Reply

  #1  
Old 06-21-02, 07:32 AM
Member
Thread Starter
Join Date: Feb 2002
Location: New York, Long Island
Posts: 101
Insulation w/ vapor barrier installed upside down

I am in the process of purchasing a home with fairly new 5 yrs. +/- extension where there is a crawl space of approx. 24" where the floor insulation is insalled upside down as the foil vapor barrier is facing down towards the ground. Do you suggest that i remove all the insullation or attempt to remove/cut the foil backing and reinsulate the space or possibly add additional insulation rigid type at the floor and wall areas of the crawl space? I anticipate that leaving the foil will eventually cause dry rot and or retention of moisture at the floor joists etc. (I live in the NY area)
 
Sponsored Links
  #2  
Old 06-21-02, 11:26 AM
jpeskoff
Visiting Guest
Posts: n/a
Chances are it doesn't matter, depending upon what the floor is on the other side.

If the floor on the other side is wood then vapor may go through it and condense on the foil (not good). However, if the upstairs is a kitchen and it has vinyl or ceramic tile or any non-porous material, no vapors will be going through in the first place.

However, it is a relatively easy job to flip the insulation around since you have access on the crawl space side. So, you may want to do it anyway.
 
  #3  
Old 06-23-02, 01:52 PM
Member
Join Date: Aug 2000
Location: USA
Posts: 15,834
Vapor barriers and insulation

http://www.resercon.com/Insulation.html
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes