3/4" Wood floor over 3/4" OSB, what do you think?

Reply

  #1  
Old 02-21-09, 09:10 AM
Member
Thread Starter
Join Date: Feb 2009
Location: St Mary's County MD
Posts: 2
Smile 3/4" Wood floor over 3/4" OSB, what do you think?

I have a 3/4" OSB (straight edge 4' x 8' sheets) subfloor directly over 1.5" x 9.25" pine joists on (give or take) 16" centers with a span of 13' 4".

The OSB is about 30 years old, in decent shape, is fastened to the joists with ring-shank nails, I doubt it's glued and (although it feels sturdy) pops and snaps a bit in places when I walk on it.

I plan on pulling carpet and fastening the OSB to the joists with a few lbs' of galvanized deck screws which leads to my question:

Will a 3/4" x 4" hardwood floor nailed to and through the 3/4" OSB work well..... or..... should I oughta' consider laying another 1/2" of ply over this 3/4" OSB first?

Or should I consider a thinner hardwood.... or an' inguneered' product like a floating or glue down?

Mostly..... will it work well.... and last well... to nail a hardwood to the 3/4" OSB subfloor?

Thanks
__________________
Dave T (DIY'er)
 
Sponsored Links
  #2  
Old 02-22-09, 03:50 AM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,968
Welcome to the forums, Dave!! I doubt the subflooring is OSB, but rather particle board. If it is OSB, that's not bad. I would drive screws through the subflooring at the joists to prevent movement (use coated torx head #8 x 2" screws - you will thank me later), then sheath at 90 degrees with 1/2" plywood, then install the 3/4" hardwood.
 
  #3  
Old 02-22-09, 06:16 AM
Member
Thread Starter
Join Date: Feb 2009
Location: St Mary's County MD
Posts: 2
Thanks Chandler.........

The subfloor is 3/4" OSB.

My concern is.... will a 3/4" or 1/2" hardwood floor nailed to just the OSB substrate be a good thing.... and will it last?

I have heard of new, coated fastener types that may enhance hardwood connectivity to OSB... but I am not sure how to rate and differentiate them.

Is 15" roofing felt directly over the 3/4" OSB subfloor recommend in my situation?

What kind (make & length) of fasteners would be best in my 3/4" OSB situation without a ply underlayment?

Or...... is it really, really necessary to add a ply underlayment to this 3/4" OSB subfloor to get a good, lasting, true hardwood foor?

Or...... should I look at (perhaps) a floating engineered product like "Kahrs"?

Thanks folks.
 
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
'