Return to the Flooring Forum | Post a Follow-Up

 o
15 Lb or 30 Lb Black Felt Paper Under Hardwood?

Posted by johnxyz (My Page) on
Wed, Mar 7, 07 at 14:54

I was leaning toward a 30# black felt (oiled) paper to put over the original floor boards for a 3/4" solid h/w install rather than a 15# black felt or the red rosin kraft paper. Good idea or waste of money? I was going to buy it in the roofing section of HD Thanks for any advice.


Follow-Up Postings:

 o
RE: 15 Lb or 30 Lb Black Felt Paper Under Hardwood?

Did this and regret it SO MUCH. If you overlap the stuff, it creates a raised row from the 1/8 or so inch of the over lap. Someone told me they make a construction type paper and not to overlap joints....i dont even think I would use this after this experience.


 o
RE: 15 Lb or 30 Lb Black Felt Paper Under Hardwood?

jeff147 - Thanks for describing your experience w/. 30 # felt paper. Would anyone else recommend to stick w/. the 15 # or red rosin kraft paper instead? Thanks.


 o
RE: 15 Lb or 30 Lb Black Felt Paper Under Hardwood?

we used 30 lb but quickly realized the overlap problem. so we just butted the ends.


 o
RE: 15 Lb or 30 Lb Black Felt Paper Under Hardwood?

For this you would probably be better off with red rosin paper so there is no chance of a bad sandwich being made of the old flooring. If you go with felt, just 15 lb. and butt it. I would also cut slits in it.

Are you installing the new flooring perpendicular or diagonal to the existing?


 o
RE: 15 Lb or 30 Lb Black Felt Paper Under Hardwood?

I used the lighter weight felt for most floors I did. Works just great.


 o
RE: 15 Lb or 30 Lb Black Felt Paper Under Hardwood?

could some one tell me why to use felt paper instead of other underlayments? Is it good for stopping sound transfer? And can it be used on solid wood and engineered hardwood flooring?


 o
RE: 15 Lb or 30 Lb Black Felt Paper Under Hardwood?

Felt paper is simply a moisture retarder (not proofer). It also helps the installer slide the flooring in place and keeps down dust. On re-sands down the road it also helps to keep dust down by encapsulating the plywood subfloor so it won't generate its own dust filtering up.

On a mechanically fastened wood floor installed over plywood the best underlayment is Aquabar B by Fortifiber.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Flooring Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here