underlayment under 3/4" over basement?

Reply

  #1  
Old 12-12-08, 07:18 PM
Member
Thread Starter
Join Date: Nov 2008
Location: New Jersey
Posts: 67
underlayment under 3/4" over basement?

I am going to begin laying 3/4" Solid Santos Mahogany 5" planks tomorrow. The subfloor is plywood, and is over a basement with temperature control. My question is, Do I need to put down an underlayment, or can I just nail my planks directly onto the subfloor? (after ensuring subfloor is nice and flat of course...)
 
Sponsored Links
  #2  
Old 12-12-08, 07:30 PM
HotxxxxxxxOKC's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Jul 2006
Location: USA
Posts: 8,044
Hi!

How thick is this plywood? You say basement, so is this wooden subfloor over slab?

I would install some 15lb roofing paper over the plywood as a vapor barrier.

What is the humidity like down there?
 
  #3  
Old 12-12-08, 08:17 PM
Member
Thread Starter
Join Date: Nov 2008
Location: New Jersey
Posts: 67
Not sure of the thickness of the plywood. Does it matter? The basement (and the whole house) is very dry. Actually thinking about adding a humidifier to the hvac unit... I don't have any tools to measure humidity in the basement, but upstairs the humidity is 42%. What does the vapor barrier do? Just helping with moisture control? The basement is poured concrete. with insulation on the walls.
 
  #4  
Old 12-13-08, 11:11 AM
HotxxxxxxxOKC's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Jul 2006
Location: USA
Posts: 8,044
Not sure of the thickness of the plywood. Does it matter?
Well, you can't nail a 3/4 solid to a piece of paper now, can we?

Vapor barrier prevents moisture from the subfloor getting to your floor covering.
 
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
'