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Old 06-07-2012, 06:37 AM   #1
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Help with Underlayment


The fellows at church took about four sheets of old particle board up in the preachers house and I need to get something to replace it. There was a layer of old flooring over the 5/8 inch particle board and 1/4 something over that. They took the 1/4 inch up and I will need 1/4 inch something to go back down. Could you tell me what I need and how to install it? I really appreciate it.

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Old 06-07-2012, 06:55 AM   #2
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Help with Underlayment


Jiju--You failed to mention that sheet vinyl will be laid over the top of the 1/4" underlayment--

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Old 06-07-2012, 06:56 AM   #3
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Help with Underlayment


Are you sure it's partical board not OSB?
Partical board has no use as a subfloor.
What is the finish flooring going to be?

The subflooring needed depends on the finished flooring going in.

Most often you would start with a layer of 3/4" Advantec T & G sitting on constrution adhesive that's on top of the floor joist.
The next layer would change according to what flooring is going in.

Never use 1/4" Louon, use 1/4 subfloor rated plywood instead if the finished flooring is going to be something like laiminet, glue down linolium tiles or sheet vinyl.
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Old 06-07-2012, 07:02 AM   #4
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Joe--you were typing while I added the detail about sheet vinyl---Mike---
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Old 06-07-2012, 07:12 AM   #5
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Help with Underlayment


Quote:
Originally Posted by joecaption View Post
Are you sure it's partical board not OSB?
Partical board has no use as a subfloor.
What is the finish flooring going to be?

The subflooring needed depends on the finished flooring going in.

Most often you would start with a layer of 3/4" Advantec T & G sitting on constrution adhesive that's on top of the floor joist.
The next layer would change according to what flooring is going in.

Never use 1/4" Louon, use 1/4 subfloor rated plywood instead if the finished flooring is going to be something like laiminet, glue down linolium tiles or sheet vinyl.
Joe I am almost stuck buying from Lowe's for the underlayment as there are just not many places here. There are several lumber companies though. They are going back with sheet vinyl. I already knew about not using the luan. There are so many new products now and I am just not up to date on them.

Yest the floor is for sure partical board, the house was built in the early 60s.
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Old 06-07-2012, 10:26 AM   #6
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You can use the underlayment grade plywood. There is a chance the staples won't hold into the particle board.
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Old 06-07-2012, 08:25 PM   #7
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I think you are thinking of luan. As the others mentioned you may have issues with stapling to particle board. However, if you used a little construction adhesive and staples it should hold ok. The only flooring that I would suggest then going over all of this with would be a vinyl, linoleum, vct tile, flaoting laminate or engineered or carpet. It would not be a good idea to use this method with hardwood, or tile.
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Old 06-07-2012, 08:40 PM   #8
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Maybe Masonite type oriented particle board?....
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Old 06-07-2012, 09:28 PM   #9
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About all I could find today that looked like it would work is BC plywood. I may have found some in Atlanta, Knoxville, Nashville, Huntsville or Birmingham but I just didn't want to drive a 130 miles. My narrow crown stapler will shoot up to 1 1/2 inch staple so hopefully that will hold the 1/4 inch plywood. I am shooting the 5/8 plywood down with 8d coated, do I need to nail the 5/8 PW other than on the joists?
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Old 06-07-2012, 09:57 PM   #10
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You are fine with the 5/8 nailed to the joists--

Your small crown stapler with 1 1/4 inch or more is good---
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Old 06-08-2012, 07:19 AM   #11
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Thanks Mike I appreciate the help.

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