Does Floor Muffler underlayment need a vapor barrier in a basement?

Reply

  #1  
Old 10-07-08, 06:14 AM
Member
Thread Starter
Join Date: Nov 2004
Location: Pleasantville, NY
Posts: 548
Does Floor Muffler underlayment need a vapor barrier in a basement?

I am installing a WilsonArt laminate floor in my basement (on a concrete slab). I will be using Floor Muffler underlayment. Should I also use a 6 mil poly as a vapor barrier?

Also, does the Floor Muffler get laid edge to edge, or overlapping edges?

Thanks,
Guy
 
Sponsored Links
  #2  
Old 10-07-08, 02:59 PM
Member
Join Date: Sep 2008
Location: Saint George, Utah
Posts: 158
Floor Muffler is an acoustic layer and moisture barrier in one. No need to add the 6 mil poly too.

Butt the seams together(no overlapping) and use 2" wide duct tape to tape the seams together.
 
  #3  
Old 10-07-08, 09:22 PM
Join Date: Nov 2000
Location: Austin, TX
Posts: 5,074
In a basement, I would still use at least a 6-mil plastic moisture barrier.
 
  #4  
Old 10-08-08, 09:10 AM
Member
Join Date: Sep 2008
Location: Saint George, Utah
Posts: 158
Floor Muffler has the same perm rating as 6 mil poly. It sure wouldn't hurt anything the double up on the moisture barrier if you wanted to though.
 
  #5  
Old 10-08-08, 07:47 PM
Join Date: Nov 2000
Location: Austin, TX
Posts: 5,074
I don't trust those 2-n-1 cushions. Seen them fail.
 
  #6  
Old 10-09-08, 03:56 AM
Member
Thread Starter
Join Date: Nov 2004
Location: Pleasantville, NY
Posts: 548
Originally Posted by Carpets Done Wright View Post
I don't trust those 2-n-1 cushions. Seen them fail.
Is Floor Muffler considered 2-in-1 or 3-in-1?


Also, if I use the 6 mil poly, should I use duct tape or clear plastic packing tape for the seams? And, if I use the poly, should I still tape the seams of the Floor Muffler with duct tape?
 
  #7  
Old 10-09-08, 07:05 AM
Join Date: Nov 2000
Location: Austin, TX
Posts: 5,074
Overlap and tape the seams with clear packing tape.

If the floor muffler is a moisture barrier also, it should have a peel & stick overlapping edge. If it doen't, the clear packing tape is the right thing to use to seal the moisture vapors out. Vapors cannot be seen. It is not liquid moisture.
 
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
'